diff --git a/en/application-dev/dfx/apprecovery-guidelines.md b/en/application-dev/dfx/apprecovery-guidelines.md
index 0e4e7c257cbde0853a36bd8a3729ee707a4b2391..b2992e7c9958f0a1ffd87db9e4549bf0187bad78 100644
--- a/en/application-dev/dfx/apprecovery-guidelines.md
+++ b/en/application-dev/dfx/apprecovery-guidelines.md
@@ -17,7 +17,7 @@ The application recovery APIs are provided by the **appRecovery** module, which
 
 | API                                                    | Description                                                        |
 | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| enableAppRecovery(restart?: RestartFlag, saveOccasion?: SaveOccasionFlag, saveMode?: SaveModeFlag) : void; | Enables the application recovery function.                                          |
+| enableAppRecovery(restart?: RestartFlag, saveOccasion?: SaveOccasionFlag, saveMode?: SaveModeFlag) : void; | Enables the application recovery function.                               |
 | saveAppState(): boolean;                                     | Saves the ability status of an application.                           |
 | restartApp(): void;                                          | Restarts the current process. If there is saved ability status, it will be passed to the **want** parameter's **wantParam** attribute of the **onCreate** lifecycle callback of the ability.|
 
diff --git a/en/application-dev/faqs/faqs-dfx.md b/en/application-dev/faqs/faqs-dfx.md
index ec1c8dbfedd5fa3c087c96d54c9c2aab73d75e8a..9fc12a1b1c26e109240702cca50e50b77495bdf5 100644
--- a/en/application-dev/faqs/faqs-dfx.md
+++ b/en/application-dev/faqs/faqs-dfx.md
@@ -6,7 +6,7 @@ Applicable to: OpenHarmony SDK 3.2.5.5
 
 1. Locate the crash-related code based on the service log.
 
-2. View the error information in the crash file. The crash file is located at **/data/log/faultlog/faultlogger/**.
+2. View the error information in the crash file, which is located at **/data/log/faultlog/faultlogger/**.
 
 ## Why cannot access controls in the UiTest test framework?
 
diff --git a/en/application-dev/faqs/faqs-language.md b/en/application-dev/faqs/faqs-language.md
index 4c0a6cba384f4e94832a6a4a933aebeee4b2f364..db7e95d5ede5c3bead52e16bceb16e90c6188b79 100644
--- a/en/application-dev/faqs/faqs-language.md
+++ b/en/application-dev/faqs/faqs-language.md
@@ -51,9 +51,9 @@ build() {
 
 Applicable to: OpenHarmony SDK 3.2.2.5, stage model of API version 9
 
-1. Obtain data in Uint8Array format by calling the **RawFile** API of **resourceManager**.
+1. Obtain Uint8Array data by calling the **RawFile** API of **resourceManager**.
 
-2. Convert data in Uint8Array format to the string type by calling the **String.fromCharCode** API.
+2. Convert the Uint8Array data to strings by calling the **String.fromCharCode** API.
 
 Reference: [Resource Manager](../reference/apis/js-apis-resource-manager.md)
 
diff --git a/en/application-dev/media/image.md b/en/application-dev/media/image.md
index 048716dfdcd76d0e35f4ed3ad70a5eeb266ac8cc..fb4e648b56839ef76cb0e5277443605734d7ab6f 100644
--- a/en/application-dev/media/image.md
+++ b/en/application-dev/media/image.md
@@ -19,112 +19,121 @@ const color = new ArrayBuffer(96); // Create a buffer to store image pixel data.
 let opts = { alphaType: 0, editable: true, pixelFormat: 4, scaleMode: 1, size: { height: 2, width: 3 } } // Image pixel data.
 
 // Create a PixelMap object.
-const color = new ArrayBuffer(96);
-let opts = { alphaType: 0, editable: true, pixelFormat: 4, scaleMode: 1, size: { height: 2, width: 3 } }
 image.createPixelMap(color, opts, (err, pixelmap) => {
     console.log('Succeeded in creating pixelmap.');
-})
-
-// Read pixels.
-const area = {
-    pixels: new ArrayBuffer(8),
-    offset: 0,
-    stride: 8,
-    region: { size: { height: 1, width: 2 }, x: 0, y: 0 }
-}
-pixelmap.readPixels(area,() => {
-    var bufferArr = new Uint8Array(area.pixels);
-    var res = true;
-    for (var i = 0; i < bufferArr.length; i++) {
-        console.info(' buffer ' + bufferArr[i]);
-        if(res) {
-            if(bufferArr[i] == 0) {
-                res = false;
-                console.log('readPixels end.');
-                break;
-            }
-        }
+    // Failed to create the PixelMap object.
+    if (err) {
+        console.info('create pixelmap failed, err' + err);
+        return
     }
-})
- 
-// Store pixels.
-const readBuffer = new ArrayBuffer(96);
-pixelmap.readPixelsToBuffer(readBuffer,() => {
-    var bufferArr = new Uint8Array(readBuffer);
-    var res = true;
-    for (var i = 0; i < bufferArr.length; i++) {
-        if(res) {
-            if (bufferArr[i] !== 0) {
-                res = false;
-                console.log('readPixelsToBuffer end.');
-                break;
-            }
-        }
+
+    // Read pixels.
+    const area = {
+        pixels: new ArrayBuffer(8),
+        offset: 0,
+        stride: 8,
+        region: { size: { height: 1, width: 2 }, x: 0, y: 0 }
     }
-})
-    
-// Write pixels.
-pixelmap.writePixels(area,() => {
-    const readArea = { pixels: new ArrayBuffer(20), offset: 0, stride: 8, region: { size: { height: 1, width: 2 }, x: 0, y: 0 }}
-    pixelmap.readPixels(readArea,() => {
-        var readArr = new Uint8Array(readArea.pixels);
-        var res = true;
-        for (var i = 0; i < readArr.length; i++) {
+    pixelmap.readPixels(area,() => {
+        let bufferArr = new Uint8Array(area.pixels);
+        let res = true;
+        for (let i = 0; i < bufferArr.length; i++) {
+            console.info(' buffer ' + bufferArr[i]);
             if(res) {
-                if (readArr[i] !== 0) {
+                if(bufferArr[i] == 0) {
                     res = false;
-                    console.log('readPixels end.please check buffer');
+                    console.log('readPixels end.');
                     break;
                 }
             }
         }
     })
-})
-  
-// Write pixels to the buffer.
-pixelmap.writeBufferToPixels(writeColor).then(() => {
+ 
+    // Store pixels.
     const readBuffer = new ArrayBuffer(96);
-    pixelmap.readPixelsToBuffer(readBuffer).then (() => {
-        var bufferArr = new Uint8Array(readBuffer);
-        var res = true;
-        for (var i = 0; i < bufferArr.length; i++) {
+    pixelmap.readPixelsToBuffer(readBuffer,() => {
+        let bufferArr = new Uint8Array(readBuffer);
+        let res = true;
+        for (let i = 0; i < bufferArr.length; i++) {
             if(res) {
-                if (bufferArr[i] !== i) {
+                if (bufferArr[i] !== 0) {
                     res = false;
-                    console.log('readPixels end.please check buffer');
+                    console.log('readPixelsToBuffer end.');
                     break;
                 }
             }
         }
     })
-})
+    
+    // Write pixels.
+    pixelmap.writePixels(area,() => {
+        const readArea = { pixels: new ArrayBuffer(20), offset: 0, stride: 8, region: { size: { height: 1, width: 2 }, x: 0, y: 0 }}
+        pixelmap.readPixels(readArea,() => {
+            let readArr = new Uint8Array(readArea.pixels);
+            let res = true;
+            for (let i = 0; i < readArr.length; i++) {
+                if(res) {
+                    if (readArr[i] !== 0) {
+                        res = false;
+                        console.log('readPixels end.please check buffer');
+                        break;
+                    }
+                }
+            }
+        })
+    })
 
-// Obtain image information.
-pixelmap.getImageInfo((error, imageInfo) => {
-    if (imageInfo !== null) {
-	    console.log('Succeeded in getting imageInfo');
-    } 
-})
+    const writeColor = new ArrayBuffer(96); // Pixel data of the image.
+    // Write pixels to the buffer.
+    pixelmap.writeBufferToPixels(writeColor).then(() => {
+        const readBuffer = new ArrayBuffer(96);
+        pixelmap.readPixelsToBuffer(readBuffer).then (() => {
+            let bufferArr = new Uint8Array(readBuffer);
+            let res = true;
+            for (let i = 0; i < bufferArr.length; i++) {
+                if(res) {
+                    if (bufferArr[i] !== i) {
+                        res = false;
+                        console.log('readPixels end.please check buffer');
+                        break;
+                    }
+                }
+            }
+        })
+    })
 
-// Release the PixelMap object.
-pixelmap.release(()=>{
-    console.log('Succeeded in releasing pixelmap');
+    // Obtain image information.
+    pixelmap.getImageInfo((err, imageInfo) => {
+        // Failed to obtain the image information.
+        if (err || imageInfo == null) {
+            console.info('getImageInfo failed, err' + err);
+            return
+        }
+        if (imageInfo !== null) {
+            console.log('Succeeded in getting imageInfo');
+        } 
+    })
+
+    // Release the PixelMap object.
+    pixelmap.release(()=>{
+        console.log('Succeeded in releasing pixelmap');
+    })
 })
 
 // Create an image source (uri).
 let path = '/data/local/tmp/test.jpg';
-const imageSourceApi = image.createImageSource(path);
+const imageSourceApi1 = image.createImageSource(path);
 
 // Create an image source (fd).
 let fd = 29;
-const imageSourceApi = image.createImageSource(fd);
+const imageSourceApi2 = image.createImageSource(fd);
 
 // Create an image source (data).
 const data = new ArrayBuffer(96);
-const imageSourceApi = image.createImageSource(data);
+const imageSourceApi3 = image.createImageSource(data);
 
 // Release the image source.
-imageSourceApi.release(() => {
+imageSourceApi3.release(() => {
     console.log('Succeeded in releasing imagesource');
 })
     
@@ -133,6 +142,10 @@ const imagePackerApi = image.createImagePacker();
 const imageSourceApi = image.createImageSource(0);
 let packOpts = { format:"image/jpeg", quality:98 };
 imagePackerApi.packing(imageSourceApi, packOpts, (err, data) => {
+    if (err) {
+        console.info('packing from imagePackerApi failed, err' + err);
+        return
+    }
     console.log('Succeeded in packing');
 })
  
@@ -161,36 +174,33 @@ let decodingOptions = {
     
 // Create a pixel map in callback mode.
 imageSourceApi.createPixelMap(decodingOptions, (err, pixelmap) => {
+    // Failed to create the PixelMap object.
+    if (err) {
+        console.info('create pixelmap failed, err' + err);
+        return
+    }
     console.log('Succeeded in creating pixelmap.');
 })
 
 // Create a pixel map in promise mode.
 imageSourceApi.createPixelMap().then(pixelmap => {
     console.log('Succeeded in creating pixelmap.');
-})
-
-// Capture error information when an exception occurs during function invoking.
-catch(error => {
-    console.log('Failed in creating pixelmap.' + error);
-})
 
-// Obtain the number of bytes in each line of pixels.
-var num = pixelmap.getBytesNumberPerRow();
+    // Obtain the number of bytes in each line of pixels.
+    let num = pixelmap.getBytesNumberPerRow();
 
-// Obtain the total number of pixel bytes.
-var pixelSize = pixelmap.getPixelBytesNumber();
+    // Obtain the total number of pixel bytes.
+    let pixelSize = pixelmap.getPixelBytesNumber();
 
-// Obtain the pixel map information.
-pixelmap.getImageInfo().then( imageInfo => {});
+    // Obtain the pixel map information.
+    pixelmap.getImageInfo().then( imageInfo => {});
 
-// Release the PixelMap object.
-pixelmap.release(()=>{
-    console.log('Succeeded in releasing pixelmap');
-})    
-
-// Capture release failure information.
-catch(error => {
-    console.log('Failed in releasing pixelmap.' + error);
+    // Release the PixelMap object.
+    pixelmap.release(()=>{
+        console.log('Succeeded in releasing pixelmap');
+    })
+}).catch(error => {
+    console.log('Failed in creating pixelmap.' + error);
 })
 ```
 
@@ -216,7 +226,7 @@ if (imagePackerApi == null) {
 }
 
 // Set encoding parameters if the image packer is successfully created.
-let packOpts = { format:["image/jpeg"], // The supported encoding format is jpg.
+let packOpts = { format:"image/jpeg", // The supported encoding format is jpg.
                  quality:98 } // Image quality, which ranges from 0 to 100.
 
 // Encode the image.
@@ -233,8 +243,9 @@ imageSourceApi.getImageInfo((err, imageInfo) => {
     console.log('Succeeded in getting imageInfo');
 })
 
+const array = new ArrayBuffer(100); // Incremental data.
 // Update incremental data.
-imageSourceIncrementalSApi.updateData(array, false, 0, 10,(error, data)=> {})
+imageSourceApi.updateData(array, false, 0, 10,(error, data)=> {})
 
 ```
 
@@ -246,10 +257,15 @@ Example scenario: The camera functions as the client to transmit image data to t
 public async init(surfaceId: any) {
 
     // (Server code) Create an ImageReceiver object.
-    var receiver = image.createImageReceiver(8 * 1024, 8, image.ImageFormat.JPEG, 1);
+    let receiver = image.createImageReceiver(8 * 1024, 8, image.ImageFormat.JPEG, 1);
 
     // Obtain the surface ID.
     receiver.getReceivingSurfaceId((err, surfaceId) => {
+    // Failed to obtain the surface ID.
+        if (err) {
+            console.info('getReceivingSurfaceId failed, err' + err);
+            return
+        }
         console.info("receiver getReceivingSurfaceId success");
     });
     // Register a surface listener, which is triggered after the buffer of the surface is ready.
diff --git a/en/application-dev/quick-start/arkts-basic-ui-description.md b/en/application-dev/quick-start/arkts-basic-ui-description.md
index d20efe12859e944d9d78fb71688dc4aada729228..4ef7f97c280d7fcac0771a304359e58c26183d34 100644
--- a/en/application-dev/quick-start/arkts-basic-ui-description.md
+++ b/en/application-dev/quick-start/arkts-basic-ui-description.md
@@ -15,7 +15,7 @@ In ArkTS, you define a custom component by using decorators **@Component** and *
   }
   ```
 
-- **build** function: a function that complies with the **Builder** API definition and is used to define the declarative UI description of components. A **build** function must be defined for custom components, and custom constructors are prohibited for custom components.
+- **build** function: A custom component must implement the **build** function and must implement no constructor. The **build** function meets the definition of the **Builder** API and is used to define the declarative UI description of components.
 
   ```ts
   interface Builder {
@@ -49,9 +49,9 @@ Column() {
 }
 ```
 
-### Structs with Mandatory Parameters
+### Structs with Parameters
 
-A struct with mandatory parameters is a component whose API definition expects parameters enclosed in the parentheses. You can use constants to assign values to the parameters.
+A struct with parameters is a component whose API definition expects parameters enclosed in the parentheses. You can use constants to assign values to the parameters.
 
 Sample code:
 
@@ -61,7 +61,7 @@ Sample code:
   Image('https://xyz/test.jpg')
   ```
 
-- Set the mandatory parameter **content** of the **\<Text>** component as follows:
+- Set the optional parameter **content** of the **\<Text>** component as follows:
 
   ```ts
   Text('test')
@@ -83,35 +83,35 @@ Component attributes are configured using an attribute method, which follows the
 
   ```ts
   Text('test')
-      .fontSize(12)
+    .fontSize(12)
   ```
 
 - Example of configuring multiple attributes at the same time by using the "**.**" operator to implement chain call:
 
   ```ts
   Image('test.jpg')
-      .alt('error.jpg')    
-      .width(100)    
-      .height(100)
+    .alt('error.jpg')    
+    .width(100)    
+    .height(100)
   ```
 
 - Example of passing variables or expressions in addition to constants:
 
   ```ts
   Text('hello')
-      .fontSize(this.size)
+    .fontSize(this.size)
   Image('test.jpg')
-      .width(this.count % 2 === 0 ? 100 : 200)    
-      .height(this.offset + 100)
+    .width(this.count % 2 === 0 ? 100 : 200)    
+    .height(this.offset + 100)
   ```
 
 -  For attributes of built-in components, ArkUI also provides some predefined [enumeration types](../reference/arkui-ts/ts-appendix-enums.md), which you can pass as parameters to methods if they meet the parameter type requirements. For example, you can configure the font color and weight attributes of the **\<Text>** component as follows:
 
   ```ts
   Text('hello')
-      .fontSize(20)
-      .fontColor(Color.Red)
-      .fontWeight(FontWeight.Bold)
+    .fontSize(20)
+    .fontColor(Color.Red)
+    .fontWeight(FontWeight.Bold)
   ```
 
 ### Event Configuration
@@ -123,7 +123,7 @@ Events supported by components are configured using event methods, which each fo
   ```ts
   Button('add counter')
       .onClick(() => {
-          this.counter += 2
+          this.counter += 2;
       })
   ```
 
@@ -132,7 +132,7 @@ Events supported by components are configured using event methods, which each fo
   ```ts
   Button('add counter')
       .onClick(function () {
-          this.counter += 2
+          this.counter += 2;
       }.bind(this))
   ```
 
@@ -140,13 +140,13 @@ Events supported by components are configured using event methods, which each fo
 
   ```ts
   myClickHandler(): void {
-    this.counter += 2
+    this.counter += 2;
   }
   
   ...
-
+  
   Button('add counter')
-    .onClick(this.myClickHandler)
+    .onClick(this.myClickHandler.bind(this))
   ```
 
 ### Child Component Configuration
@@ -158,11 +158,11 @@ For a component that supports child components, for example, a container compone
   ```ts
   Column() {
       Text('Hello')
-          .fontSize(100)
+        .fontSize(100)
       Divider()
       Text(this.myText)
-          .fontSize(100)
-          .fontColor(Color.Red)
+        .fontSize(100)
+        .fontColor(Color.Red)
   }
   ```
 
@@ -176,10 +176,10 @@ For a component that supports child components, for example, a container compone
         .height(100)
       Button('click +1')
         .onClick(() => {
-          console.info('+1 clicked!')
+          console.info('+1 clicked!');
         })
     }
-
+  
     Divider()
     Row() {
       Image('test2.jpg')
@@ -187,10 +187,10 @@ For a component that supports child components, for example, a container compone
         .height(100)
       Button('click +2')
         .onClick(() => {
-          console.info('+2 clicked!')
+          console.info('+2 clicked!');
         })
     }
-
+  
     Divider()
     Row() {
       Image('test3.jpg')
@@ -198,7 +198,7 @@ For a component that supports child components, for example, a container compone
         .height(100)
       Button('click +3')
         .onClick(() => {
-          console.info('+3 clicked!')
+          console.info('+3 clicked!');
         })
     }
   }
diff --git a/en/application-dev/quick-start/resource-categories-and-access.md b/en/application-dev/quick-start/resource-categories-and-access.md
index d1d342fe74eaed80516a7ca554cbe84f84ad927c..b79359a99ee1f7ecf434a7858a7ee1999b9af5d5 100644
--- a/en/application-dev/quick-start/resource-categories-and-access.md
+++ b/en/application-dev/quick-start/resource-categories-and-access.md
@@ -230,27 +230,27 @@ When referencing resources in the **rawfile** subdirectory, use the **"$rawfile(
 >
 > The return value of **$r** is a **Resource** object. You can obtain the corresponding string by using the [getStringValue](../reference/apis/js-apis-resource-manager.md) API.
 
-In the **.ets** file, you can use the resources defined in the **resources** directory.
+In the **.ets** file, you can use the resources defined in the **resources** directory. The following is a resource usage example based on the resource file examples in [Resource Group Sub-directories](#resource-group-subdirectories):
 
 ```ts
 Text($r('app.string.string_hello'))
-    .fontColor($r('app.color.color_hello'))
-    .fontSize($r('app.float.font_hello'))
-}
+  .fontColor($r('app.color.color_hello'))
+  .fontSize($r('app.float.font_hello'))
 
 Text($r('app.string.string_world'))
-    .fontColor($r('app.color.color_world'))
-    .fontSize($r('app.float.font_world'))
-}
-
-Text($r('app.string.message_arrive', "five of the clock")) // Reference string resources. The second parameter of $r is used to replace %s.
-    .fontColor($r('app.color.color_hello'))
-    .fontSize($r('app.float.font_hello'))
-}
-
-Text($r('app.plural.eat_apple', 5, 5))       // Reference plural resources. The first parameter indicates the plural resource, the second parameter indicates the number of plural resources, and the third parameter indicates the substitute of %d.
-    .fontColor($r('app.color.color_world'))
-    .fontSize($r('app.float.font_world'))
+  .fontColor($r('app.color.color_world'))
+  .fontSize($r('app.float.font_world'))
+
+// Reference string resources. The second parameter of $r is used to replace %s, and value is "We will arrive at five'o clock".
+Text($r('app.string.message_arrive', "five'o clock"))
+  .fontColor($r('app.color.color_hello'))
+  .fontSize($r('app.float.font_hello'))
+
+// Reference plural resources. The first parameter indicates the plural resource, the second parameter indicates the number of plural resources, and the third parameter indicates the substitute of %d.
+// The value is "5 apple" in singular form and "5 apples" in plural form.
+Text($r('app.plural.eat_apple', 5, 5))
+  .fontColor($r('app.color.color_world'))
+  .fontSize($r('app.float.font_world'))
 }
 
 Image($r('app.media.my_background_image'))  // Reference media resources.
@@ -274,14 +274,20 @@ To reference a system resource, use the **"$r('sys.type.resource_id')"** format.
 
 ```ts
 Text('Hello')
-    .fontColor($r('sys.color.ohos_id_color_emphasize'))
-    .fontSize($r('sys.float.ohos_id_text_size_headline1'))
-    .fontFamily($r('sys.string.ohos_id_text_font_family_medium'))
-    .backgroundColor($r('sys.color.ohos_id_color_palette_aux1'))
+  .fontColor($r('sys.color.ohos_id_color_emphasize'))
+  .fontSize($r('sys.float.ohos_id_text_size_headline1'))
+  .fontFamily($r('sys.string.ohos_id_text_font_family_medium'))
+  .backgroundColor($r('sys.color.ohos_id_color_palette_aux1'))
+
 Image($r('sys.media.ohos_app_icon'))
-    .border({color: $r('sys.color.ohos_id_color_palette_aux1'), radius: $r('sys.float.ohos_id_corner_radius_button'), width: 2})
-    .margin({top: $r('sys.float.ohos_id_elements_margin_horizontal_m'), bottom: $r('sys.float.ohos_id_elements_margin_horizontal_l')})
-    .height(200)
-    .width(300)
+  .border({
+    color: $r('sys.color.ohos_id_color_palette_aux1'),
+    radius: $r('sys.float.ohos_id_corner_radius_button'), width: 2
+  })
+  .margin({
+    top: $r('sys.float.ohos_id_elements_margin_horizontal_m'),
+    bottom: $r('sys.float.ohos_id_elements_margin_horizontal_l')
+  })
+  .height(200)
+  .width(300)
 ```
-
diff --git a/en/application-dev/reference/apis/js-apis-call.md b/en/application-dev/reference/apis/js-apis-call.md
index 56596e1ffdb8e011627fa026240375ce1094d9ea..82741c1432d9d4fd9c5babef17548bb643cf2dd9 100644
--- a/en/application-dev/reference/apis/js-apis-call.md
+++ b/en/application-dev/reference/apis/js-apis-call.md
@@ -55,7 +55,7 @@ Initiates a call based on the specified options. This API uses an asynchronous c
 | Name     | Type                        | Mandatory | Description                             |
 | ----------- | ---------------------------- | ---- | --------------------------------------- |
 | phoneNumber | string                       | Yes  | Phone number.                           |
-| options     | [DialOptions](#dialoptions)  | Yes  | Call option, which indicates whether the call is a voice call or video call. |
+| options     | [DialOptions](#dialoptions)  | No  | Call option, which indicates whether the call is a voice call or video call. |
 | callback    | AsyncCallback&lt;boolean&gt; | Yes  | Callback used to return the result.<br>- **true**: success<br>- **false**: failure |
 
 **Example**
@@ -313,7 +313,7 @@ Checks whether the called number is an emergency number based on the specified p
 | Name     | Type                                              | Mandatory | Description                                                       |
 | ----------- | -------------------------------------------------- | ---- | -------------------------------------------- |
 | phoneNumber | string                                             | Yes  | Phone number.                                                 |
-| options     | [EmergencyNumberOptions](#emergencynumberoptions7) | Yes  | Phone number options.        |
+| options     | [EmergencyNumberOptions](#emergencynumberoptions7) | No  | Phone number options.        |
 | callback    | AsyncCallback&lt;boolean&gt;                       | Yes  | Callback used to return the result.<br> - **true**: The called number is an emergency number.<br>- **false**: The called number is not an emergency number. |
 
 **Example**
@@ -397,7 +397,7 @@ A formatted phone number is a standard numeric string, for example, 555 0100.
 | Name     | Type                                        | Mandatory | Description                                |
 | ----------- | -------------------------------------------- | ---- | ------------------------------------ |
 | phoneNumber | string                                       | Yes  | Phone number.                          |
-| options     | [NumberFormatOptions](#numberformatoptions7) | Yes  | Number formatting options, for example, country code.              |
+| options     | [NumberFormatOptions](#numberformatoptions7) | No  | Number formatting options, for example, country code.              |
 | callback    | AsyncCallback&lt;string&gt;                  | Yes  | Callback used to return the result. |
 
 **Example**
@@ -566,33 +566,6 @@ promise.then(data => {
 });
 ```
 
-## call.answer<sup>7+</sup>
-
-answer\(callback: AsyncCallback<void\>\): void
-
-Answers a call. This API uses an asynchronous callback to return the result.
-
-This is a system API.
-
-**Required permission**: ohos.permission.ANSWER_CALL
-
-**System capability**: SystemCapability.Telephony.CallManager
-
-**Parameters**
-
-| Name  | Type                     | Mandatory| Description      |
-| -------- | ------------------------- | ---- | ---------- |
-| callback | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result.|
-
-**Example**
-
-```js
-call.answer((err, data) => {
-    console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
-});
-```
-
-
 ## call.answer<sup>7+</sup>
 
 answer\(callId: number, callback: AsyncCallback<void\>\): void
@@ -658,7 +631,7 @@ promise.then(data => {
 
 ## call.hangup<sup>7+</sup>
 
-hangup\(callback: AsyncCallback<void\>\): void
+hangup\(callId: number, callback: AsyncCallback<void\>\): void
 
 Ends a call. This API uses an asynchronous callback to return the result.
 
@@ -672,22 +645,23 @@ This is a system API.
 
 | Name  | Type                     | Mandatory| Description      |
 | -------- | ------------------------- | ---- | ---------- |
+| callId   | number                    | Yes  | Call ID. You can obtain the value by subscribing to **callDetailsChange** events.|
 | callback | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result.|
 
 **Example**
 
 ```js
-call.hangup((err, data) => {
+call.hangup(1, (err, data) => {
     console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
 });
 ```
 
 
-## call.hangup<sup>7+</sup>
+## call.answer<sup>9+</sup>
 
-hangup\(callId: number, callback: AsyncCallback<void\>\): void
+answer\(callback: AsyncCallback<void\>\): void
 
-Ends a call based on the specified call ID. This API uses an asynchronous callback to return the result.
+Answers a call.This API uses an asynchronous callback to return the result.
 
 This is a system API.
 
@@ -699,13 +673,12 @@ This is a system API.
 
 | Name  | Type                     | Mandatory| Description                                           |
 | -------- | ------------------------- | ---- | ----------------------------------------------- |
-| callId   | number                    | Yes  | Call ID. You can obtain the value by subscribing to **callDetailsChange** events.|
 | callback | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result.                                     |
 
 **Example**
 
 ```js
-call.hangup(1, (err, data) => {
+call.answer((err, data) => {
     console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
 });
 ```
@@ -746,11 +719,11 @@ promise.then(data => {
 });
 ```
 
-## call.reject<sup>7+</sup>
+## call.hangup<sup>9+</sup>
 
-reject\(callback: AsyncCallback<void\>\): void
+hangup\(callback: AsyncCallback<void\>\): void
 
-Rejects a call. This API uses an asynchronous callback to return the result.
+Ends a call. This API uses an asynchronous callback to return the result.
 
 This is a system API.
 
@@ -767,38 +740,7 @@ This is a system API.
 **Example**
 
 ```js
-call.reject((err, data) => {
-    console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
-});
-```
-
-
-## call.reject<sup>7+</sup>
-
-reject\(options: RejectMessageOptions, callback: AsyncCallback<void\>\): void
-
-Rejects a call based on the specified options. This API uses an asynchronous callback to return the result.
-
-This is a system API.
-
-**Required permission**: ohos.permission.ANSWER_CALL
-
-**System capability**: SystemCapability.Telephony.CallManager
-
-**Parameters**
-
-| Name  | Type                                          | Mandatory| Description          |
-| -------- | ---------------------------------------------- | ---- | -------------- |
-| options  | [RejectMessageOptions](#rejectmessageoptions7) | Yes  | Options for the call rejection message.|
-| callback | AsyncCallback&lt;void&gt;                      | Yes  | Callback used to return the result.    |
-
-**Example**
-
-```js
-let rejectMessageOptions={
-    messageContent: "Unknown number blocked"
-}
-call.reject(rejectMessageOptions, (err, data) => {
+call.hangup((err, data) => {
     console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
 });
 ```
@@ -903,6 +845,65 @@ promise.then(data => {
 });
 ```
 
+
+## call.reject<sup>9+</sup>
+
+reject\(callback: AsyncCallback<void\>\): void
+
+Rejects a call. This API uses an asynchronous callback to return the result.
+
+This is a system API.
+
+**Required permission**: ohos.permission.ANSWER_CALL
+
+**System capability**: SystemCapability.Telephony.CallManager
+
+**Parameters**
+
+| Name  | Type                     | Mandatory| Description      |
+| -------- | ------------------------- | ---- | ---------- |
+| callback | AsyncCallback&lt;void&gt; | Yes  | Callback used to return the result.|
+
+**Example:**
+
+```js
+call.reject((err, data) => {
+    console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
+});
+```
+
+
+## call.reject<sup>9+</sup>
+
+reject\(options: RejectMessageOptions, callback: AsyncCallback<void\>\): void
+
+Rejects a call. This API uses an asynchronous callback to return the result.
+
+This is a system API.
+
+**Required permission**: ohos.permission.ANSWER_CALL
+
+**System capability**: SystemCapability.Telephony.CallManager
+
+**Parameters**
+
+| Name  | Type                                          | Mandatory| Description          |
+| -------- | ---------------------------------------------- | ---- | -------------- |
+| options  | [RejectMessageOptions](#rejectmessageoptions7) | Yes  | Options for the call rejection message.|
+| callback | AsyncCallback&lt;void&gt;                      | Yes  | Callback used to return the result.    |
+
+**Example:**
+
+```js
+let rejectMessageOptions={
+    messageContent: "Unknown number blocked"
+}
+call.reject(rejectMessageOptions, (err, data) => {
+    console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
+});
+```
+
+
 ## call.holdCall<sup>7+</sup>
 
 holdCall\(callId: number, callback: AsyncCallback<void\>\): void
@@ -1344,8 +1345,8 @@ This is a system API.
 
 | Name  | Type                                                       | Mandatory| Description                                                        |
 | -------- | ----------------------------------------------------------- | ---- | ------------------------------------------------------------ |
-| slotId   | number                                                      | Yes  | Card slot ID.<br>- **0**: card slot 1<br>- **1**: card slot 2                      |
-| callback | AsyncCallback&lt;[CallWaitingStatus](#callwaitingstatus7)\> | Yes  | Callback used to return the result.<br><br>- **0**: Call waiting is disabled.<br>- **1**: Call waiting is enabled.|
+| slotId   | number                                                      | Yes  | Card slot ID.<br>- **0**: card slot 1<br>- **1**: card slot 2               |
+| callback | AsyncCallback&lt;[CallWaitingStatus](#callwaitingstatus7)\> | Yes  | Callback used to return the result.<br>- **0**: Call waiting is disabled.<br>- **1**: Call waiting is enabled.|
 
 **Example**
 
@@ -2399,7 +2400,7 @@ promise.then(data => {
 });
 ```
 
-## call.setAudioDevice<sup>8+</sup>
+## call.setAudioDevice<sup>9+</sup>
 
 setAudioDevice\(device: AudioDevice, callback: AsyncCallback<void\>\): void
 
@@ -2425,7 +2426,7 @@ call.setAudioDevice(1, (err, data) => {
 ```
 
 
-## call.setAudioDevice<sup>8+</sup>
+## call.setAudioDevice<sup>9+</sup>
 
 setAudioDevice\(device: AudioDevice, options: AudioDeviceOptions, callback: AsyncCallback<void\>\): void
 
diff --git a/en/application-dev/reference/apis/js-apis-i18n.md b/en/application-dev/reference/apis/js-apis-i18n.md
index e990ecf8126054b0de5ad52308c4f83843782d97..08bf0cfe66b40f46262765048463081b9c1a66a6 100644
--- a/en/application-dev/reference/apis/js-apis-i18n.md
+++ b/en/application-dev/reference/apis/js-apis-i18n.md
@@ -1,13 +1,10 @@
 # Internationalization – I18N
 
- This module provides system-related or enhanced I18N capabilities, such as locale management, phone number formatting, and calendar, through supplementary I18N APIs that are not defined in ECMA 402.
+The I18N module provides system-related or enhanced I18N capabilities, such as locale management, phone number formatting, and calendar, through supplementary I18N APIs that are not defined in ECMA 402.
 The [Intl](js-apis-intl.md) module provides basic I18N capabilities through the standard I18N APIs defined in ECMA 402. It works with the I18N module to provide a complete suite of I18N capabilities.
 
 >  **NOTE**
->  - The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
->
->  - This module provides system-related or enhanced I18N capabilities, such as locale management, phone number formatting, and calendar, through supplementary I18N APIs that are not defined in ECMA 402. For details about the basic I18N capabilities, see [Intl](js-apis-intl.md).
-
+>  The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 ## Modules to Import
 
@@ -247,9 +244,9 @@ This is a system API.
 
 **Parameters**
 
-| Name     | Type    | Description   |
-| -------- | ------ | ----- |
-| language | string | Language ID.|
+| Name     | Type    | Mandatory | Description   |
+| -------- | ------ | ----- | ----- |
+| language | string | Yes | Language ID.|
 
 **Error codes**
 
@@ -313,9 +310,9 @@ This is a system API.
 
 **Parameters**
 
-| Name   | Type    | Description   |
-| ------ | ------ | ----- |
-| region | string | Region ID.|
+| Name     | Type    | Mandatory | Description   |
+| -------- | ------ | ----- | ----- |
+| region | string | Yes | Region ID.|
 
 **Error codes**
 
@@ -379,9 +376,9 @@ This is a system API.
 
 **Parameters**
 
-| Name   | Type    | Description             |
-| ------ | ------ | --------------- |
-| locale | string | System locale ID, for example, **zh-CN**.|
+| Name     | Type    | Mandatory | Description   |
+| -------- | ------ | ----- | ----- |
+| locale | string | Yes | System locale ID, for example, **zh-CN**.|
 
 **Error codes**
 
@@ -713,9 +710,9 @@ Checks whether the localized script for the specified language is displayed from
 
 **Parameters**
 
-| Name   | Type    | Description     |
-| ------ | ------ | ------- |
-| locale | string | Locale ID.|
+| Name     | Type    | Mandatory | Description   |
+| -------- | ------ | ----- | ----- |
+| locale | string | Yes | Locale ID.|
 
 **Return value**
 
@@ -905,7 +902,7 @@ Sets the start day of a week for this **Calendar** object.
 
 | Name  | Type    | Mandatory  | Description                   |
 | ----- | ------ | ---- | --------------------- |
-| value | number | No   | Start day of a week. The value **1** indicates Sunday, and the value **7** indicates Saturday.|
+| value | number | Yes   | Start day of a week. The value **1** indicates Sunday, and the value **7** indicates Saturday.|
 
 **Example**
   ```js
@@ -947,7 +944,7 @@ Sets the minimum number of days in the first week of a year.
 
 | Name  | Type    | Mandatory  | Description          |
 | ----- | ------ | ---- | ------------ |
-| value | number | No   | Minimum number of days in the first week of a year.|
+| value | number | Yes   | Minimum number of days in the first week of a year.|
 
 **Example**
   ```js
diff --git a/en/application-dev/reference/apis/js-apis-inputmethod-subtype.md b/en/application-dev/reference/apis/js-apis-inputmethod-subtype.md
index 3db933a52a6f940e8d25a324d0fef7131330bc9f..61ec49997ccb35b204f860e57b0985793598e071 100644
--- a/en/application-dev/reference/apis/js-apis-inputmethod-subtype.md
+++ b/en/application-dev/reference/apis/js-apis-inputmethod-subtype.md
@@ -1,6 +1,6 @@
-# Input Method Subtype
+# @ohos.inputmethodsubtype
 
-The **inputMethodEngine** module provides APIs for managing the attributes of input method subtypes. Different attribute settings result in different subtypes.
+The **inputMethodSubtype** module provides APIs for managing the attributes of input method subtypes. Different attribute settings result in different subtypes.
 
 > **NOTE**
 >
diff --git a/en/application-dev/reference/apis/js-apis-inputmethod.md b/en/application-dev/reference/apis/js-apis-inputmethod.md
index 857bc3fd17b1fc4a29eda9c2e0185dfa11163702..424e48b357711a7ee94eb4b048f107d7ad4c7a3d 100644
--- a/en/application-dev/reference/apis/js-apis-inputmethod.md
+++ b/en/application-dev/reference/apis/js-apis-inputmethod.md
@@ -1,15 +1,15 @@
-# Input Method Framework
+# @ohos.inputmethod
 
 The **inputMethod** module provides an input method framework, which can be used to hide the keyboard, obtain the list of installed input methods, display the dialog box for input method selection, and more.
 
->**NOTE**
+> **NOTE**
 >
->The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+> The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
 ## Modules to Import
 
-```
+```js
 import inputMethod from '@ohos.inputmethod';
 ```
 
@@ -31,14 +31,14 @@ Describes the input method application attributes.
 
 | Name| Type| Readable| Writable| Description|
 | -------- | -------- | -------- | -------- | -------- |
-| name<sup>9+</sup>  | string | Yes| No| Internal name of the input method.|
-| id<sup>9+</sup>    | string | Yes| No| Unique ID of the input method.|
-| label<sup>9+</sup>    | string | Yes| No| External display name of the input method.|
-| icon<sup>9+</sup>    | string | Yes| No| Icon of the input method.|
-| iconId<sup>9+</sup>    | number | Yes| No| Icon ID of the input method.|
-| extra<sup>9+</sup>    | object | Yes| No| Extra information about the input method.|
-| packageName<sup>(deprecated)</sup> | string | Yes| No| Name of the input method package.<br>**NOTE**<br>This API is supported since API version 8 and deprecated since API version 9. You are advised to use **name**.|
-| methodId<sup>(deprecated)</sup> | string | Yes| No| Unique ID of the input method.<br>**NOTE**<br>This API is supported since API version 8 and deprecated since API version 9. You are advised to use **id**.|
+| name<sup>9+</sup>  | string | Yes| No| Internal name of the input method. Mandatory.|
+| id<sup>9+</sup>    | string | Yes| No| Unique ID of the input method. Mandatory.|
+| label<sup>9+</sup>    | string | Yes| No| External display name of the input method. Optional.|
+| icon<sup>9+</sup>    | string | Yes| No| Icon of the input method. Optional.|
+| iconId<sup>9+</sup>    | number | Yes| No| Icon ID of the input method. Optional.|
+| extra<sup>9+</sup>    | object | Yes| Yes| Extra information about the input method. Mandatory.|
+| packageName<sup>(deprecated)</sup> | string | Yes| No| Name of the input method package. Mandatory.<br>**NOTE**<br>This API is supported since API version 8 and deprecated since API version 9. You are advised to use **name**.|
+| methodId<sup>(deprecated)</sup> | string | Yes| No| Unique ID of the input method. Mandatory.<br>**NOTE**<br>This API is supported since API version 8 and deprecated since API version 9. You are advised to use **id**.|
 
 ## inputMethod.getController<sup>9+</sup>
 
@@ -102,7 +102,7 @@ switchInputMethod(target: InputMethodProperty, callback: AsyncCallback&lt;boolea
 
 Switches to another input method. This API uses an asynchronous callback to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -120,25 +120,33 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800005 | Configuration persisting error.        |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
+let im = inputMethod.getCurrentInputMethod();
+let prop = {
+    packageName: im.packageName,
+    methodId: im.methodId,
+    name: im.packageName,
+    id: im.methodId,
+    extra: {}
+}
 try{
-    inputMethod.switchInputMethod({packageName:'com.example.kikakeyboard', methodId:'com.example.kikakeyboard', extra: {}}, (err, result) => {
-        if (err) {
-            console.error('switchInputMethod err: ' + JSON.stringify(err));
+    inputMethod.switchInputMethod(prop, (err, result) => {
+        if (err !== undefined) {
+            console.error('Failed to switchInputMethod: ' + JSON.stringify(err));
             return;
         }
         if (result) {
-            console.info('Success to switchInputMethod.(callback)');
+            console.info('Succeeded in switching inputmethod.');
         } else {
-            console.error('Failed to switchInputMethod.(callback)');
+            console.error('Failed to switchInputMethod.');
         }
     });
 } catch(err) {
-    console.error('switchInputMethod err: ' + JSON.stringify(err));
+    console.error('Failed to switchInputMethod: ' + JSON.stringify(err));
 }
 ```
 ## inputMethod.switchInputMethod<sup>9+</sup>
@@ -146,7 +154,7 @@ switchInputMethod(target: InputMethodProperty): Promise&lt;boolean&gt;
 
 Switches to another input method. This API uses a promise to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -169,23 +177,31 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800005 | Configuration persisting error.        |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
+let im = inputMethod.getCurrentInputMethod();
+let prop = {
+    packageName: im.packageName,
+    methodId: im.methodId,
+    name: im.packageName,
+    id: im.methodId,
+    extra: {}
+}
 try {
-    inputMethod.switchInputMethod({packageName:'com.example.kikakeyboard', methodId:'com.example.kikakeyboard', extra: {}}).then((result) => {
+    inputMethod.switchInputMethod(prop).then((result) => {
         if (result) {
-            console.info('Success to switchInputMethod.');
+            console.info('Succeeded in switching inputmethod.');
         } else {
             console.error('Failed to switchInputMethod.');
         }
     }).catch((err) => {
-        console.error('switchInputMethod err: ' + JSON.stringify(err));
+        console.error('Failed to switchInputMethod: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('switchInputMethod err: ' + JSON.stringify(err));
+    console.error('Failed to switchInputMethod: ' + JSON.stringify(err));
 }
 ```
 
@@ -215,7 +231,7 @@ switchCurrentInputMethodSubtype(target: InputMethodSubtype, callback: AsyncCallb
 
 Switches to another subtype of the current input method. This API uses an asynchronous callback to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -233,36 +249,35 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800005 | Configuration persisting error.        |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
-let inputMethodSubtype = {
-    id: "com.example.kikakeyboard",
-    label: "ServiceExtAbility",
-    name: "",
-    mode: "upper",
-    locale: "",
-    language: "",
-    icon: "",
-    iconId: 0,
-    extra: {}
-}
 try {
-    inputMethod.switchCurrentInputMethodSubtype(inputMethodSubtype, (err, result) => {
-        if (err) {
-            console.error('switchCurrentInputMethodSubtype err: ' + JSON.stringify(err));
+    inputMethod.switchCurrentInputMethodSubtype({
+      id: "com.example.kikakeyboard",
+      label: "ServiceExtAbility",
+      name: "",
+      mode: "upper",
+      locale: "",
+      language: "",
+      icon: "",
+      iconId: 0,
+      extra: {}
+    }, (err, result) => {
+        if (err !== undefined) {
+            console.error('Failed to switchCurrentInputMethodSubtype: ' + JSON.stringify(err));
             return;
         }
         if (result) {
-            console.info('Success to switchCurrentInputMethodSubtype.(callback)');
+            console.info('Succeeded in switching currentInputMethodSubtype.');
         } else {
-            console.error('Failed to switchCurrentInputMethodSubtype.(callback)');
+            console.error('Failed to switchCurrentInputMethodSubtype');
         }
     });
 } catch(err) {
-    console.error('switchCurrentInputMethodSubtype err: ' + JSON.stringify(err));
+    console.error('Failed to switchCurrentInputMethodSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -272,7 +287,7 @@ switchCurrentInputMethodSubtype(target: InputMethodSubtype): Promise&lt;boolean&
 
 Switches to another subtype of the current input method. This API uses a promise to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -295,34 +310,33 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800005 | Configuration persisting error.        |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
-let inputMethodSubtype = {
-    id: "com.example.kikakeyboard",
-    label: "ServiceExtAbility",
-    name: "",
-    mode: "upper",
-    locale: "",
-    language: "",
-    icon: "",
-    iconId: 0,
-    extra: {}
-}
 try {
-    inputMethod.switchCurrentInputMethodSubtype(inputMethodSubtype).then((result) => {
+    inputMethod.switchCurrentInputMethodSubtype({
+      id: "com.example.kikakeyboard",
+      label: "ServiceExtAbility",
+      name: "",
+      mode: "upper",
+      locale: "",
+      language: "",
+      icon: "",
+      iconId: 0,
+      extra: {}
+    }).then((result) => {
         if (result) {
-            console.info('Success to switchCurrentInputMethodSubtype.');
+            console.info('Succeeded in switching currentInputMethodSubtype.');
         } else {
             console.error('Failed to switchCurrentInputMethodSubtype.');
         }
     }).catch((err) => {
-        console.error('switchCurrentInputMethodSubtype err: ' + JSON.stringify(err));
+        console.error('Failed to switchCurrentInputMethodSubtype: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('switchCurrentInputMethodSubtype err: ' + JSON.stringify(err));
+    console.error('Failed to switchCurrentInputMethodSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -352,7 +366,7 @@ switchCurrentInputMethodAndSubtype(inputMethodProperty: InputMethodProperty, inp
 
 Switches to a specified subtype of a specified input method. This API uses an asynchronous callback to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -371,41 +385,43 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800005 | Configuration persisting error.        |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
+let im = inputMethod.getCurrentInputMethod();
 let inputMethodProperty = {
-    packageName: "com.example.kikakeyboard",
-    methodId: "ServiceExtAbility",
-    extra: {}
-}
-let inputMethodSubProperty = {
-    id: "com.example.kikakeyboard",
-    label: "ServiceExtAbility",
-    name: "",
-    mode: "upper",
-    locale: "",
-    language: "",
-    icon: "",
-    iconId: 0,
+    packageName: im.packageName,
+    methodId: im.methodId,
+    name: im.packageName,
+    id: im.methodId,
     extra: {}
 }
 try {
-    inputMethod.switchCurrentInputMethodAndSubtype(inputMethodProperty, inputMethodSubProperty, (err,result) => {
-        if (err) {
-            console.error('switchCurrentInputMethodAndSubtype err: ' + JSON.stringify(err));
+    inputMethod.switchCurrentInputMethodAndSubtype(inputMethodProperty, {
+      id: "com.example.kikakeyboard",
+      label: "ServiceExtAbility",
+      name: "",
+      mode: "upper",
+      locale: "",
+      language: "",
+      icon: "",
+      iconId: 0,
+      extra: {}
+    }, (err,result) => {
+        if (err !== undefined) {
+            console.error('Failed to switchCurrentInputMethodAndSubtype: ' + JSON.stringify(err));
             return;
         }
         if (result) {
-            console.info('Success to switchCurrentInputMethodAndSubtype.(callback)');
+            console.info('Succeeded in switching currentInputMethodAndSubtype.');
         } else {
-            console.error('Failed to switchCurrentInputMethodAndSubtype.(callback)');
+            console.error('Failed to switchCurrentInputMethodAndSubtype.');
         }
     });
 } catch (err) {
-    console.error('switchCurrentInputMethodAndSubtype err: ' + JSON.stringify(err));
+    console.error('Failed to switchCurrentInputMethodAndSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -415,7 +431,7 @@ switchCurrentInputMethodAndSubtype(inputMethodProperty: InputMethodProperty, inp
 
 Switches to a specified subtype of a specified input method. This API uses a promise to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -439,39 +455,41 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800005 | Configuration persisting error.        |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
+let im = inputMethod.getCurrentInputMethod();
 let inputMethodProperty = {
-    packageName: "com.example.kikakeyboard",
-    methodId: "ServiceExtAbility",
-    extra: {}
-}
-let inputMethodSubProperty = {
-    id: "com.example.kikakeyboard",
-    label: "ServiceExtAbility",
-    name: "",
-    mode: "upper",
-    locale: "",
-    language: "",
-    icon: "",
-    iconId: 0,
+    packageName: im.packageName,
+    methodId: im.methodId,
+    name: im.packageName,
+    id: im.methodId,
     extra: {}
 }
 try {
-    inputMethod.switchCurrentInputMethodAndSubtype(inputMethodProperty, inputMethodSubProperty).then((result) => {
+    inputMethod.switchCurrentInputMethodAndSubtype(inputMethodProperty, {
+      id: im.packageName,
+      label: im.methodId,
+      name: "",
+      mode: "upper",
+      locale: "",
+      language: "",
+      icon: "",
+      iconId: 0,
+      extra: {}
+    }).then((result) => {
         if (result) {
-            console.info('Success to switchCurrentInputMethodAndSubtype.');
+            console.info('Succeeded in switching currentInputMethodAndSubtype.');
         } else {
             console.error('Failed to switchCurrentInputMethodAndSubtype.');
         }
     }).catch((err) => {
-        console.error('switchCurrentInputMethodAndSubtype err: ' + err);
+        console.error('Failed to switchCurrentInputMethodAndSubtype: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('switchCurrentInputMethodAndSubtype err: ' + err);
+    console.error('Failed to switchCurrentInputMethodAndSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -548,25 +566,25 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800003 | Input method client error.             |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 try {
     inputMethodController.stopInputSession((error, result) => {
-        if (error) {
-            console.error('stopInputSession err: ' + JSON.stringify(error));
+        if (error !== undefined) {
+            console.error('Failed to stopInputSession: ' + JSON.stringify(error));
             return;
         }
         if (result) {
-            console.info('Success to stopInputSession.(callback)');
+            console.info('Succeeded in stopping inputSession.');
         } else {
-            console.error('Failed to stopInputSession.(callback)');
+            console.error('Failed to stopInputSession.');
         }
     });
 } catch(error) {
-    console.error('stopInputSession err: ' + JSON.stringify(error));
+    console.error('Failed to stopInputSession: ' + JSON.stringify(error));
 }
 ```
 
@@ -591,7 +609,7 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800003 | Input method client error.             |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
@@ -599,15 +617,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 try {
     inputMethodController.stopInputSession().then((result) => {
         if (result) {
-            console.info('Success to stopInputSession.');
+            console.info('Succeeded in stopping inputSession.');
         } else {
             console.error('Failed to stopInputSession.');
         }
     }).catch((err) => {
-        console.error('stopInputSession err: ' + JSON.stringify(err));
+        console.error('Failed to stopInputSession: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('stopInputSession err: ' + JSON.stringify(err));
+    console.error('Failed to stopInputSession: ' + JSON.stringify(err));
 }
 ```
 
@@ -617,7 +635,7 @@ showSoftKeyboard(callback: AsyncCallback&lt;void&gt;): void
 
 Shows this soft keyboard. This API must be used with the input text box and works only when the input text box is activated. This API uses an asynchronous callback to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -634,16 +652,16 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800003 | Input method client error.             |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 inputMethodController.showSoftKeyboard((err) => {
     if (err === undefined) {
-        console.info('showSoftKeyboard success');
+        console.info('Succeeded in showing softKeyboard.');
     } else {
-        console.error('showSoftKeyboard failed because : ' + JSON.stringify(err));
+        console.error('Failed to showSoftKeyboard: ' + JSON.stringify(err));
     }
 })
 ```
@@ -654,7 +672,7 @@ showSoftKeyboard(): Promise&lt;void&gt;
 
 Shows this soft keyboard. This API must be used with the input text box and works only when the input text box is activated. This API uses a promise to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -671,15 +689,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800003 | Input method client error.             |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
-inputMethodController.showSoftKeyboard().then(async (err) => {
-    console.log('showSoftKeyboard success');
+inputMethodController.showSoftKeyboard().then(() => {
+    console.log('Succeeded in showing softKeyboard.');
 }).catch((err) => {
-    console.error('showSoftKeyboard err: ' + JSON.stringify(err));
+    console.error('Failed to showSoftKeyboard: ' + JSON.stringify(err));
 });
 ```
 
@@ -689,7 +707,7 @@ hideSoftKeyboard(callback: AsyncCallback&lt;void&gt;): void
 
 Hides this soft keyboard. This API must be used with the input text box and works only when the input text box is activated. This API uses an asynchronous callback to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -706,16 +724,16 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800003 | Input method client error.             |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 inputMethodController.hideSoftKeyboard((err) => {
     if (err === undefined) {
-        console.info('hideSoftKeyboard success');
+        console.info('Succeeded in hiding softKeyboard.');
     } else {
-        console.error('hideSoftKeyboard failed because : ' + JSON.stringify(err));
+        console.error('Failed to hideSoftKeyboard: ' + JSON.stringify(err));
     }
 })
 ```
@@ -726,7 +744,7 @@ hideSoftKeyboard(): Promise&lt;void&gt;
 
 Hides this soft keyboard. This API must be used with the input text box and works only when the input text box is activated. This API uses a promise to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -743,15 +761,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800003 | Input method client error.             |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
-inputMethodController.hideSoftKeyboard().then(async (err) => {
-    console.log('hideSoftKeyboard success');
+inputMethodController.hideSoftKeyboard().then(() => {
+    console.log('Succeeded in hiding softKeyboard.');
 }).catch((err) => {
-    console.error('hideSoftKeyboard err: ' + JSON.stringify(err));
+    console.error('Failed to hideSoftKeyboard: ' + JSON.stringify(err));
 });
 ```
 
@@ -777,14 +795,14 @@ Ends this input session. The invoking of this API takes effect only after the in
 
 ```js
 inputMethodController.stopInput((error, result) => {
-    if (error) {
-        console.error('failed to stopInput because: ' + JSON.stringify(error));
+    if (error !== undefined) {
+        console.error('Failed to stopInput: ' + JSON.stringify(error));
         return;
     }
     if (result) {
-        console.info('Success to stopInput.(callback)');
+        console.info('Succeeded in stopping input.');
     } else {
-        console.error('Failed to stopInput.(callback)');
+        console.error('Failed to stopInput.');
     }
 });
 ```
@@ -812,12 +830,12 @@ Ends this input session. The invoking of this API takes effect only after the in
 ```js
 inputMethodController.stopInput().then((result) => {
     if (result) {
-        console.info('Success to stopInput.');
+        console.info('Succeeded in stopping input.');
     } else {
         console.error('Failed to stopInput.');
     }
 }).catch((err) => {
-    console.error('stopInput err: ' + err);
+    console.error('Failed to stopInput: ' + err);
 })
 ```
 
@@ -891,26 +909,28 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800001 | Package manager error.                 |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 let inputMethodProperty = {
-    packageName:'com.example.kikakeyboard',
-    methodId:'com.example.kikakeyboard',
+    packageName: 'com.example.kikakeyboard',
+    methodId: 'com.example.kikakeyboard',
+    name: 'com.example.kikakeyboard',
+    id: 'com.example.kikakeyboard',
     extra:{}
 }
 try {
     inputMethodSetting.listInputMethodSubtype(inputMethodProperty, (err,data) => {
-        if (err) {
-            console.error('listInputMethodSubtype failed: ' + JSON.stringify(err));
+        if (err !== undefined) {
+            console.error('Failed to listInputMethodSubtype: ' + JSON.stringify(err));
             return;
         }
-        console.log('listInputMethodSubtype success');
+        console.log('Succeeded in listing inputMethodSubtype.');
     });
 } catch (err) {
-    console.error('listInputMethodSubtype failed: ' + JSON.stringify(err));
+    console.error('Failed to listInputMethodSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -941,24 +961,26 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800001 | Package manager error.                 |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 let inputMethodProperty = {
-    packageName:'com.example.kikakeyboard',
-    methodId:'com.example.kikakeyboard',
+    packageName: 'com.example.kikakeyboard',
+    methodId: 'com.example.kikakeyboard',
+    name: 'com.example.kikakeyboard',
+    id: 'com.example.kikakeyboard',
     extra:{}
 }
 try {
     inputMethodSetting.listInputMethodSubtype(inputMethodProperty).then((data) => {
-        console.info('listInputMethodSubtype success');
+        console.info('Succeeded in listing inputMethodSubtype.');
     }).catch((err) => {
-        console.error('listInputMethodSubtype err: ' + JSON.stringify(err));
+        console.error('Failed to listInputMethodSubtype: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('listInputMethodSubtype err: ' + JSON.stringify(err));
+    console.error('Failed to listInputMethodSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -983,21 +1005,21 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800001 | Package manager error.                 |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 try {
     inputMethodSetting.listCurrentInputMethodSubtype((err, data) => {
-        if (err) {
-            console.error('listCurrentInputMethodSubtype failed: ' + JSON.stringify(err));
+        if (err !== undefined) {
+            console.error('Failed to listCurrentInputMethodSubtype: ' + JSON.stringify(err));
             return;
         }
-        console.log('listCurrentInputMethodSubtype success');
+        console.log('Succeeded in listing currentInputMethodSubtype.');
     });
 } catch(err) {
-    console.error('listCurrentInputMethodSubtype err: ' + JSON.stringify(err));
+    console.error('Failed to listCurrentInputMethodSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -1022,19 +1044,19 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800001 | Package manager error.                 |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 try {
     inputMethodSetting.listCurrentInputMethodSubtype().then((data) => {
-        console.info('listCurrentInputMethodSubtype success');
+        console.info('Succeeded in listing currentInputMethodSubtype.');
     }).catch((err) => {
-        console.error('listCurrentInputMethodSubtype err: ' + err);
+        console.error('Failed to listCurrentInputMethodSubtype: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('listCurrentInputMethodSubtype err: ' + JSON.stringify(err));
+    console.error('Failed to listCurrentInputMethodSubtype: ' + JSON.stringify(err));
 }
 ```
 
@@ -1060,21 +1082,21 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800001 | Package manager error.                 |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 try {
     inputMethodSetting.getInputMethods(true, (err,data) => {
-        if (err) {
-            console.error('getInputMethods failed: ' + JSON.stringify(err));
+        if (err !== undefined) {
+            console.error('Failed to getInputMethods: ' + JSON.stringify(err));
             return;
         }
-        console.log('getInputMethods success');
+        console.log('Succeeded in getting inputMethods.');
     });
 } catch (err) {
-    console.error('getInputMethods failed: ' + JSON.stringify(err));
+    console.error('Failed to getInputMethods: ' + JSON.stringify(err));
 }
 ```
 
@@ -1099,7 +1121,7 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
 | 12800001 | Package manager error.                 |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Return value**
 
@@ -1112,12 +1134,12 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 try {
     inputMethodSetting.getInputMethods(true).then((data) => {
-        console.info('getInputMethods success');
+        console.info('Succeeded in getting inputMethods.');
     }).catch((err) => {
-        console.error('getInputMethods err: ' + JSON.stringify(err));
+        console.error('Failed to getInputMethods: ' + JSON.stringify(err));
     })
 } catch(err) {
-    console.error('getInputMethods err: ' + JSON.stringify(err));
+    console.error('Failed to getInputMethods: ' + JSON.stringify(err));
 }
 ```
 
@@ -1127,7 +1149,7 @@ showOptionalInputMethods(callback: AsyncCallback&lt;boolean&gt;): void
 
 Displays a dialog box for selecting an input method. This API uses an asynchronous callback to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -1143,21 +1165,21 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 try {
     inputMethodSetting.showOptionalInputMethods((err, data) => {
-        if (err) {
-            console.error('showOptionalInputMethods failed: ' + JSON.stringify(err));
+        if (err !== undefined) {
+            console.error('Failed to showOptionalInputMethods: ' + JSON.stringify(err));
             return;
         }
-        console.info('showOptionalInputMethods success');
+        console.info('Succeeded in showing optionalInputMethods.');
     });
 } catch (err) {
-    console.error('showOptionalInputMethods failed: ' + JSON.stringify(err));
+    console.error('Failed to showOptionalInputMethods: ' + JSON.stringify(err));
 }
 ```
 
@@ -1167,7 +1189,7 @@ showOptionalInputMethods(): Promise&lt;boolean&gt;
 
 Displays a dialog box for selecting an input method. This API uses a promise to return the result.
 
-**Required permissions**: ohos.permission.CONNECT_IME_ABILITY
+**Required permissions**: ohos.permission.CONNECT_IME_ABILITY (available only to system applications)
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -1183,15 +1205,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 
 | Error Code ID| Error Message                            |
 | -------- | -------------------------------------- |
-| 12800008 | Input method settings extension error. |
+| 12800008 | Input method manager service error. |
 
 **Example**
 
 ```js
 inputMethodSetting.showOptionalInputMethods().then((data) => {
-    console.info('displayOptionalInputMethod success.');
+    console.info('Succeeded in showing optionalInputMethods.');
 }).catch((err) => {
-    console.error('displayOptionalInputMethod err: ' + err);
+    console.error('Failed to showOptionalInputMethods: ' + JSON.stringify(err));
 })
 ```
 
@@ -1217,11 +1239,11 @@ Obtains a list of installed input methods. This API uses an asynchronous callbac
 
 ```js
 inputMethodSetting.listInputMethod((err,data) => {
-    if (err) {
-        console.error('listInputMethod failed because: ' + JSON.stringify(err));
+    if (err !== undefined) {
+        console.error('Failed to listInputMethod: ' + JSON.stringify(err));
         return;
     }
-    console.log('listInputMethod success');
+    console.log('Succeeded in listing inputMethod.');
  });
 ```
 
@@ -1247,9 +1269,9 @@ Obtains a list of installed input methods. This API uses a promise to return the
 
 ```js
 inputMethodSetting.listInputMethod().then((data) => {
-    console.info('listInputMethod success');
+    console.info('Succeeded in listing inputMethod.');
 }).catch((err) => {
-    console.error('listInputMethod err: ' + JSON.stringify(err));
+    console.error('Failed to listInputMethod: ' + JSON.stringify(err));
 })
 ```
 
@@ -1275,11 +1297,11 @@ Displays a dialog box for selecting an input method. This API uses an asynchrono
 
 ```js
 inputMethodSetting.displayOptionalInputMethod((err) => {
-    if (err) {
-        console.error('displayOptionalInputMethod failed because: ' + JSON.stringify(err));
+    if (err !== undefined) {
+        console.error('Failed to displayOptionalInputMethod: ' + JSON.stringify(err));
         return;
     }
-    console.info('displayOptionalInputMethod success');
+    console.info('Succeeded in displaying optionalInputMethod.');
 });
 ```
 
@@ -1305,8 +1327,8 @@ Displays a dialog box for selecting an input method. This API uses a promise to
 
 ```js
 inputMethodSetting.displayOptionalInputMethod().then(() => {
-    console.info('displayOptionalInputMethod success');
+    console.info('Succeeded in displaying optionalInputMethod.');
 }).catch((err) => {
-    console.error('displayOptionalInputMethod err: ' + err);
+    console.error('Failed to displayOptionalInputMethod: ' + JSON.stringify(err));
 })
 ```
diff --git a/en/application-dev/reference/apis/js-apis-inputmethodengine.md b/en/application-dev/reference/apis/js-apis-inputmethodengine.md
index d0512b5904dc67fdde8d8c1f85c3b181cb771188..2c87f74698434a68279b5e1c627e2a7352819a38 100644
--- a/en/application-dev/reference/apis/js-apis-inputmethodengine.md
+++ b/en/application-dev/reference/apis/js-apis-inputmethodengine.md
@@ -1,4 +1,4 @@
-# Input Method Engine
+# @ohos.inputmethodengine
 
 The **inputMethodEngine** module streamlines the interaction between input methods and applications. By calling APIs of this module, applications can be bound to input method services to accept text input through the input methods, request the keyboard to display or hide, listen for the input method status, and much more.
 
@@ -137,7 +137,7 @@ Obtains a **KeyboardDelegate** instance.
 **Example**
 
 ```js
-let KeyboardDelegate = inputMethodEngine.createKeyboardDelegate();
+let keyboardDelegate = inputMethodEngine.createKeyboardDelegate();
 ```
 
 ## InputMethodEngine
@@ -162,9 +162,9 @@ Enables listening for the input method binding event. This API uses an asynchron
 **Example**
 
 ```js
-inputMethodEngine.getInputMethodEngine().on('inputStart', (kbController, textInputClient) => {
-    KeyboardController = kbController;
-    TextInputClient = textInputClient;
+inputMethodEngine.getInputMethodEngine().on('inputStart', (kbController, textClient) => {
+    let keyboardController = kbController;
+    let textInputClient = textClient;
 });
 ```
 
@@ -229,18 +229,14 @@ Disables listening for a keyboard event. This API uses an asynchronous callback
 
 | Name  | Type  | Mandatory| Description                                                        |
 | -------- | ------ | ---- | ------------------------------------------------------------ |
-| type     | string | Yes  | Listening type.<br>- The value **'keyboardShow'** indicates the keyboard display event.<br>- The value **'keyboardHide'** indicates the keyboard hiding event. |
+| type     | string | Yes  | Listening type.<br>- The value **'keyboardShow'** indicates the keyboard display event.<br>- The value **'keyboardHide'** indicates the keyboard hiding event.|
 | callback | () => void   | No  | Callback used to return the result.|
 
 **Example**
 
 ```js
-inputMethodEngine.getInputMethodEngine().off('keyboardShow', () => {
-    console.log('inputMethodEngine delete keyboardShow notification.');
-});
-inputMethodEngine.getInputMethodEngine().off('keyboardHide', () => {
-    console.log('inputMethodEngine delete keyboardHide notification.');
-});
+inputMethodEngine.getInputMethodEngine().off('keyboardShow');
+inputMethodEngine.getInputMethodEngine().off('keyboardHide');
 ```
 
 ## InputMethodAbility
@@ -265,9 +261,9 @@ Enables listening for the input method binding event. This API uses an asynchron
 **Example**
 
 ```js
-inputMethodEngine.getInputMethodAbility().on('inputStart', (kbController, inputClient) => {
-    KeyboardController = kbController;
-    InputClient = inputClient;
+inputMethodEngine.getInputMethodAbility().on('inputStart', (kbController, client) => {
+    let keyboardController = kbController;
+    let inputClient = client;
 });
 ```
 
@@ -289,9 +285,7 @@ Cancels listening for the input method binding event. This API uses an asynchron
 **Example**
 
 ```js
-inputMethodEngine.getInputMethodAbility().off('inputStart', (kbController, inputClient) => {
-    console.log('delete inputStart notification.');
-});
+inputMethodEngine.getInputMethodAbility().off('inputStart');
 ```
 
 ### on('inputStop')<sup>9+</sup>
@@ -390,7 +384,7 @@ inputMethodEngine.getInputMethodAbility().off('setCallingWindow', () => {
 
 on(type: 'keyboardShow'|'keyboardHide', callback: () => void): void
 
-Enables listening for an input method event. This API uses an asynchronous callback to return the result.
+Enables listening for a keyboard event. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -398,7 +392,7 @@ Enables listening for an input method event. This API uses an asynchronous callb
 
 | Name  | Type  | Mandatory| Description                                                        |
 | -------- | ------ | ---- | ------------------------------------------------------------ |
-| type     | string | Yes  | Listening type.<br>- The value **'keyboardShow'** indicates the keyboard display event.<br>- The value **'keyboardHide'** indicates the keyboard hiding event. |
+| type     | string | Yes  | Listening type.<br>- The value **'keyboardShow'** indicates the keyboard display event.<br>- The value **'keyboardHide'** indicates the keyboard hiding event.|
 | callback | () => void   | Yes  | Callback used to return the result.                                                  |
 
 **Example**
@@ -416,7 +410,7 @@ inputMethodEngine.getInputMethodAbility().on('keyboardHide', () => {
 
 off(type: 'keyboardShow'|'keyboardHide', callback?: () => void): void
 
-Disables listening for an input method event. This API uses an asynchronous callback to return the result.
+Disables listening for a keyboard event. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
@@ -602,14 +596,14 @@ Enables listening for the text selection change event. This API uses an asynchro
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
-  **Parameters**
+**Parameters**
 
 | Name  | Type                                                        | Mandatory| Description                                                        |
 | -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
 | type     | string                                                       | Yes  | Listening type.<br>The value **'selectionChange'** indicates the text selection change event.|
 | callback | (oldBegin: number, oldEnd: number, newBegin: number, newEnd: number) => void | Yes  | Callback used to return the text selection information.<br>- **oldBegin**: start of the selected text before the change.<br>- **oldEnd**: end of the selected text before the change.<br>- **newBegin**: start of the selected text after the change.<br>- **newEnd**: end of the selected text after the change.|
 
-  **Example**
+**Example**
 
 ```js
 inputMethodEngine.getKeyboardDelegate().on('selectionChange', (oldBegin, oldEnd, newBegin, newEnd) => {
@@ -652,14 +646,14 @@ Enables listening for the text change event. This API uses an asynchronous callb
 
 **System capability**: SystemCapability.MiscServices.InputMethodFramework
 
-  **Parameters**
+**Parameters**
 
 | Name  | Type  | Mandatory| Description                                                        |
 | -------- | ------ | ---- | ------------------------------------------------------------ |
 | type     | string | Yes  | Listening type.<br>The value **'textChange'** indicates the text change event.|
 | callback | (text: string) => void | Yes  | Callback used to return the text content.                                  |
 
-  **Example**
+**Example**
 
 ```js
 inputMethodEngine.getKeyboardDelegate().on('textChange', (text) => {
@@ -719,12 +713,12 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 **Example**
 
 ```js
-KeyboardController.hide((err) => {
-    if (err === undefined) {
-        console.error('hide err: ' + JSON.stringify(err));
+keyboardController.hide((err) => {
+    if (err !== undefined) {
+        console.error('Failed to hide keyboard: ' + JSON.stringify(err));
         return;
     }
-    console.log('hide success.');
+    console.log('Succeeded in hiding keyboard.');
 });
 ```
 
@@ -753,10 +747,10 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 **Example**
 
 ```js
-KeyboardController.hide().then(() => {
-    console.info('hide success.');
+keyboardController.hide().then(() => {
+    console.info('Succeeded in hiding keyboard.');
 }).catch((err) => {
-    console.info('hide err: ' + JSON.stringify(err));
+    console.info('Failed to hide keyboard: ' + JSON.stringify(err));
 });
 ```
 
@@ -781,12 +775,12 @@ Hides the keyboard. This API uses an asynchronous callback to return the result.
 **Example**
 
 ```js
-KeyboardController.hideKeyboard((err) => {
-    if (err === undefined) {
-        console.error('hideKeyboard err: ' + JSON.stringify(err));
+keyboardController.hideKeyboard((err) => {
+    if (err !== undefined) {
+        console.error('Failed to hide Keyboard: ' + JSON.stringify(err));
         return;
     }
-    console.log('hideKeyboard success.');
+    console.log('Succeeded in hiding keyboard.');
 });
 ```
 
@@ -811,10 +805,10 @@ Hides the keyboard. This API uses a promise to return the result.
 **Example**
 
 ```js
-KeyboardController.hideKeyboard().then(() => {
-    console.info('hideKeyboard success.');
+keyboardController.hideKeyboard().then(() => {
+    console.info('Succeeded in hiding keyboard.');
 }).catch((err) => {
-    console.info('hideKeyboard err: ' + JSON.stringify(err));
+    console.info('Failed to hide Keyboard: ' + JSON.stringify(err));
 });
 ```
 
@@ -850,13 +844,13 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let action = 1;
 try {
-    InputClient.sendKeyFunction(action, (err, result) => {
-        if (err) {
-            console.error('sendKeyFunction err: ' + JSON.stringify(err));
+    inputClient.sendKeyFunction(action, (err, result) => {
+        if (err !== undefined) {
+            console.error('Failed to sendKeyFunction: ' + JSON.stringify(err));
             return;
         }
         if (result) {
-            console.info('Success to sendKeyFunction. ');
+            console.info('Succeeded in sending key function. ');
         } else {
             console.error('Failed to sendKeyFunction. ');
         }
@@ -899,17 +893,17 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let action = 1;
 try {
-    InputClient.sendKeyFunction(action).then((result) => {
+    inputClient.sendKeyFunction(action).then((result) => {
         if (result) {
-            console.info('Success to sendKeyFunction. ');
+            console.info('Succeeded in sending key function. ');
         } else {
             console.error('Failed to sendKeyFunction. ');
         }
     }).catch((err) => {
-        console.error('sendKeyFunction err:' + JSON.stringify(err));
+        console.error('Failed to sendKeyFunction:' + JSON.stringify(err));
     });
 } catch (err) {
-    console.error('sendKeyFunction err: ' + JSON.stringify(err));
+    console.error('Failed to sendKeyFunction: ' + JSON.stringify(err));
 }
 ```
 
@@ -942,15 +936,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.getForward(length, (err, text) => {
-        if (err) {
-            console.error('getForward err: ' + JSON.stringify(err));
+    inputClient.getForward(length, (err, text) => {
+        if (err !== undefined) {
+            console.error('Failed to getForward: ' + JSON.stringify(err));
             return;
         }
-        console.log('getForward result: ' + text);
+        console.log('Succeeded in getting forward, text: ' + text);
     });
 } catch (err) {
-    console.error('getForward err: ' + JSON.stringify(err));
+    console.error('Failed to getForward: ' + JSON.stringify(err));
 }
 ```
 
@@ -988,13 +982,13 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.getForward(length).then((text) => {
-        console.info('getForward resul: ' + text);
+    inputClient.getForward(length).then((text) => {
+        console.info('Succeeded in getting forward, text: ' + text);
     }).catch((err) => {
-        console.error('getForward err: ' + JSON.stringify(err));
+        console.error('Failed to getForward: ' + JSON.stringify(err));
     });
 } catch (err) {
-    console.error('getForward err: ' + JSON.stringify(err));
+    console.error('Failed to getForward: ' + JSON.stringify(err));
 }
 ```
 
@@ -1027,15 +1021,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.getBackward(length, (err, text) => {
-        if (err) {
-            console.error('getBackward result: ' + JSON.stringify(err));
+    inputClient.getBackward(length, (err, text) => {
+        if (err !== undefined) {
+            console.error('Failed to getForward: ' + JSON.stringify(err));
             return;
         }
-        console.log('getBackward result---text: ' + text);
+        console.log('Succeeded in getting backward, text: ' + text);
     });
 } catch (err) {
-    console.error('getBackward result: ' + JSON.stringify(err));
+    console.error('Failed to getForward: ' + JSON.stringify(err));
 }
 ```
 
@@ -1073,13 +1067,13 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.getBackward(length).then((text) => {
-        console.info('getBackward result: ' + text);
+    inputClient.getBackward(length).then((text) => {
+        console.info('Succeeded in getting backward, text: ' + text);
     }).catch((err) => {
-        console.error('getBackward err: ' + JSON.stringify(err));
+        console.error('Failed to getForward: ' + JSON.stringify(err));
     });
 } catch (err) {
-    console.error('getBackward err: ' + JSON.stringify(err));
+    console.error('Failed to getForward: ' + JSON.stringify(err));
 }
 ```
 
@@ -1112,19 +1106,19 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.deleteForward(length, (err, result) => {
-        if (err) {
-            console.error('deleteForward result: ' + JSON.stringify(err));
+    inputClient.deleteForward(length, (err, result) => {
+        if (err !== undefined) {
+            console.error('Failed to delete forward: ' + JSON.stringify(err));
             return;
         }
         if (result) {
-            console.info('Success to deleteForward. ');
+            console.info('Succeeded in deleting forward. ');
         } else {
-            console.error('Failed to deleteForward. ');
+            console.error('Failed to delete forward: ' + JSON.stringify(err));
         }
     });
 } catch (err) {
-    console.error('deleteForward result: ' + JSON.stringify(err));
+    console.error('Failed to delete forward: ' + JSON.stringify(err));
 }
 ```
 
@@ -1162,17 +1156,17 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.deleteForward(length).then((result) => {
+    inputClient.deleteForward(length).then((result) => {
         if (result) {
-            console.info('Success to deleteForward. ');
+            console.info('Succeeded in deleting forward. ');
         } else {
-            console.error('Failed to deleteForward. ');
+            console.error('Failed to delete Forward. ');
         }
     }).catch((err) => {
-        console.error('deleteForward err: ' + JSON.stringify(err));
+        console.error('Failed to delete Forward: ' + JSON.stringify(err));
     });
 } catch (err) {
-    console.error('deleteForward err: ' + JSON.stringify(err));
+    console.error('Failed to delete Forward: ' + JSON.stringify(err));
 }
 ```
 
@@ -1205,15 +1199,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 ```js
 let length = 1;
 try {
-    InputClient.deleteBackward(length, (err, result) => {
-        if (err) {
-            console.error('deleteBackward err: ' + JSON.stringify(err));
+    inputClient.deleteBackward(length, (err, result) => {
+        if (err !== undefined) {
+            console.error('Failed to delete Backward: ' + JSON.stringify(err));
             return;
         }
         if (result) {
-            console.info('Success to deleteBackward. ');
+            console.info('Succeeded in deleting backward. ');
         } else {
-            console.error('Failed to deleteBackward. ');
+            console.error('Failed to delete Backward: ' + JSON.stringify(err));
         }
     });
 } catch (err) {
@@ -1254,14 +1248,14 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 
 ```js
 let length = 1;
-InputClient.deleteBackward(length).then((result) => {
+inputClient.deleteBackward(length).then((result) => {
     if (result) {
-        console.info('Success to deleteBackward. ');
+        console.info('Succeeded in deleting backward. ');
     } else {
         console.error('Failed to deleteBackward. ');
     }
 }).catch((err) => {
-    console.error('deleteBackward err: ' + JSON.stringify(err));
+    console.error('Failed to deleteBackward: ' + JSON.stringify(err));
 });
 ```
 
@@ -1292,13 +1286,13 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 **Example**
 
 ```js
-InputClient.insertText('test', (err, result) => {
-    if (err) {
-        console.error('insertText err: ' + JSON.stringify(err));
+inputClient.insertText('test', (err, result) => {
+    if (err !== undefined) {
+        console.error('Failed to insertText: ' + JSON.stringify(err));
         return;
     }
     if (result) {
-        console.info('Success to insertText. ');
+        console.info('Succeeded in inserting text. ');
     } else {
         console.error('Failed to insertText. ');
     }
@@ -1338,17 +1332,17 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 
 ```js
 try {
-    InputClient.insertText('test').then((result) => {
+    inputClient.insertText('test').then((result) => {
         if (result) {
-            console.info('Success to insertText. ');
+            console.info('Succeeded in inserting text. ');
         } else {
             console.error('Failed to insertText. ');
         }
     }).catch((err) => {
-        console.error('insertText err: ' + JSON.stringify(err));
+        console.error('Failed to insertText: ' + JSON.stringify(err));
     });
 } catch (err) {
-    console.error('insertText err: ' + JSON.stringify(err));
+    console.error('Failed to insertText: ' + JSON.stringify(err));
 }
 ```
 
@@ -1377,9 +1371,9 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 **Example**
 
 ```js
-InputClient.getEditorAttribute((err, editorAttribute) => {
-    if (err) {
-        console.error('getEditorAttribute err: ' + JSON.stringify(err));
+inputClient.getEditorAttribute((err, editorAttribute) => {
+    if (err !== undefined) {
+        console.error('Failed to getEditorAttribute: ' + JSON.stringify(err));
         return;
     }
     console.log('editorAttribute.inputPattern: ' + JSON.stringify(editorAttribute.inputPattern));
@@ -1412,11 +1406,11 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 **Example**
 
 ```js
-InputClient.getEditorAttribute().then((editorAttribute) => {
+inputClient.getEditorAttribute().then((editorAttribute) => {
     console.info('editorAttribute.inputPattern: ' + JSON.stringify(editorAttribute.inputPattern));
     console.info('editorAttribute.enterKeyType: ' + JSON.stringify(editorAttribute.enterKeyType));
 }).catch((err) => {
-    console.error('getEditorAttribute err: ' + JSON.stringify(err));
+    console.error('Failed to getEditorAttribute: ' + JSON.stringify(err));
 });
 ```
 
@@ -1447,15 +1441,15 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 
 ```js
 try {
-    InputClient.moveCursor(inputMethodEngine.CURSOR_xxx, (err) => {
-        if (err) {
-            console.error('moveCursor err: ' + JSON.stringify(err));
+    inputClient.moveCursor(inputMethodEngine.CURSOR_UP, (err) => {
+        if (err !== undefined) {
+            console.error('Failed to moveCursor: ' + JSON.stringify(err));
             return;
         }
-        console.info('moveCursor success');
+        console.info('Succeeded in moving cursor.');
     });
 } catch (err) {
-    console.error('moveCursor err: ' + JSON.stringify(err));
+    console.error('Failed to moveCursor: ' + JSON.stringify(err));
 }
 ```
 
@@ -1491,13 +1485,13 @@ For details about the error codes, see [Input Method Framework Error Codes](../e
 
 ```js
 try {
-    InputClient.moveCursor(inputMethodEngine.CURSOR_UP).then(() => {
-        console.log('moveCursor success');
+    inputClient.moveCursor(inputMethodEngine.CURSOR_UP).then(() => {
+        console.log('Succeeded in moving cursor.');
     }).catch((err) => {
-        console.error('moveCursor success err: ' + JSON.stringify(err));
+        console.error('Failed to moveCursor: ' + JSON.stringify(err));
     });
 } catch (err) {
-    console.log('moveCursor err: ' + JSON.stringify(err));
+    console.log('Failed to moveCursor: ' + JSON.stringify(err));
 }
 ```
 
@@ -1554,12 +1548,12 @@ Obtains the specific-length text before the cursor. This API uses an asynchronou
 
 ```js
 let length = 1;
-TextInputClient.getForward(length, (err, text) => {
-    if (err === undefined) {
-        console.error('getForward err: ' + JSON.stringify(err));
+textInputClient.getForward(length, (err, text) => {
+    if (err !== undefined) {
+        console.error('Failed to getForward: ' + JSON.stringify(err));
         return;
     }
-    console.log('getForward result---text: ' + text);
+    console.log('Succeeded in getting forward, text: ' + text);
 });
 ```
 
@@ -1591,10 +1585,10 @@ Obtains the specific-length text before the cursor. This API uses a promise to r
 
 ```js
 let length = 1;
-TextInputClient.getForward(length).then((text) => {
-    console.info('getForward result: ' + JSON.stringify(text));
+textInputClient.getForward(length).then((text) => {
+    console.info('Succeeded in getting forward, text: ' + text);
 }).catch((err) => {
-    console.error('getForward err: ' + JSON.stringify(err));
+    console.error('Failed to getForward: ' + JSON.stringify(err));
 });
 ```
 
@@ -1621,12 +1615,12 @@ Obtains the specific-length text after the cursor. This API uses an asynchronous
 
 ```js
 let length = 1;
-TextInputClient.getBackward(length, (err, text) => {
-    if (err === undefined) {
-        console.error('getBackward err: ' + JSON.stringify(err));
+textInputClient.getBackward(length, (err, text) => {
+    if (err !== undefined) {
+        console.error('Failed to getBackward: ' + JSON.stringify(err));
         return;
     }
-    console.log('getBackward result---text: ' + text);
+    console.log('Succeeded in getting borward, text: ' + text);
 });
 ```
 
@@ -1658,10 +1652,10 @@ Obtains the specific-length text after the cursor. This API uses a promise to re
 
 ```js
 let length = 1;
-TextInputClient.getBackward(length).then((text) => {
-    console.info('getBackward result: ' + JSON.stringify(text));
+textInputClient.getBackward(length).then((text) => {
+    console.info('Succeeded in getting backward: ' + JSON.stringify(text));
 }).catch((err) => {
-    console.error('getBackward err: ' + JSON.stringify(err));
+    console.error('Failed to getBackward: ' + JSON.stringify(err));
 });
 ```
 
@@ -1688,13 +1682,13 @@ Deletes the fixed-length text before the cursor. This API uses an asynchronous c
 
 ```js
 let length = 1;
-TextInputClient.deleteForward(length, (err, result) => {
-    if (err === undefined) {
-        console.error('deleteForward err: ' + JSON.stringify(err));
+textInputClient.deleteForward(length, (err, result) => {
+    if (err !== undefined) {
+        console.error('Failed to deleteForward: ' + JSON.stringify(err));
         return;
     }
     if (result) {
-        console.info('Success to deleteForward. ');
+        console.info('Succeeded in deleting forward. ');
     } else {
         console.error('Failed to deleteForward. ');
     }
@@ -1729,14 +1723,14 @@ Deletes the fixed-length text before the cursor. This API uses a promise to retu
 
 ```js
 let length = 1;
-TextInputClient.deleteForward(length).then((result) => {
+textInputClient.deleteForward(length).then((result) => {
     if (result) {
-        console.info('Succeed in deleting forward. ');
+        console.info('Succeeded in deleting forward. ');
     } else {
         console.error('Failed to delete forward. ');
     }
 }).catch((err) => {
-    console.error('Failed to delete forward err: ' + JSON.stringify(err));
+    console.error('Failed to delete forward: ' + JSON.stringify(err));
 });
 ```
 
@@ -1763,13 +1757,13 @@ Deletes the fixed-length text after the cursor. This API uses an asynchronous ca
 
 ```js
 let length = 1;
-TextInputClient.deleteBackward(length, (err, result) => {
-    if (err === undefined) {
-        console.error('deleteBackward err: ' + JSON.stringify(err));
+textInputClient.deleteBackward(length, (err, result) => {
+    if (err !== undefined) {
+        console.error('Failed to delete backward: ' + JSON.stringify(err));
         return;
     }
     if (result) {
-        console.info('Success to deleteBackward. ');
+        console.info('Succeeded in deleting backward. ');
     } else {
         console.error('Failed to deleteBackward. ');
     }
@@ -1804,14 +1798,14 @@ Deletes the fixed-length text after the cursor. This API uses an asynchronous ca
 
 ```js
 let length = 1;
-TextInputClient.deleteBackward(length).then((result) => {
+textInputClient.deleteBackward(length).then((result) => {
     if (result) {
-        console.info('Success to deleteBackward. ');
+        console.info('Succeeded in deleting backward. ');
     } else {
         console.error('Failed to deleteBackward. ');
     }
 }).catch((err) => {
-    console.error('deleteBackward err: ' + JSON.stringify(err));
+    console.error('Failed to deleteBackward: ' + JSON.stringify(err));
 });
 ```
 ### sendKeyFunction<sup>(deprecated)</sup>
@@ -1837,13 +1831,13 @@ Sends the function key. This API uses an asynchronous callback to return the res
 
 ```js
 let action = 1;
-TextInputClient.sendKeyFunction(action, (err, result) => {
-    if (err === undefined) {
-        console.error('sendKeyFunction err: ' + JSON.stringify(err));
+textInputClient.sendKeyFunction(action, (err, result) => {
+    if (err !== undefined) {
+        console.error('Failed to sendKeyFunction: ' + JSON.stringify(err));
         return;
     }
     if (result) {
-        console.info('Success to sendKeyFunction. ');
+        console.info('Succeeded in sending key function. ');
     } else {
         console.error('Failed to sendKeyFunction. ');
     }
@@ -1878,14 +1872,14 @@ Sends the function key. This API uses a promise to return the result.
 
 ```js
 let action = 1;
-TextInputClient.sendKeyFunction(action).then((result) => {
+textInputClient.sendKeyFunction(action).then((result) => {
     if (result) {
-        console.info('Success to sendKeyFunction. ');
+        console.info('Succeeded in sending key function. ');
     } else {
         console.error('Failed to sendKeyFunction. ');
     }
 }).catch((err) => {
-    console.error('sendKeyFunction err:' + JSON.stringify(err));
+    console.error('Failed to sendKeyFunction:' + JSON.stringify(err));
 });
 ```
 
@@ -1911,13 +1905,13 @@ Inserts text. This API uses an asynchronous callback to return the result.
 **Example**
 
 ```js
-TextInputClient.insertText('test', (err, result) => {
-    if (err === undefined) {
-        console.error('insertText err: ' + JSON.stringify(err));
+textInputClient.insertText('test', (err, result) => {
+    if (err !== undefined) {
+        console.error('Failed to insertText: ' + JSON.stringify(err));
         return;
     }
     if (result) {
-        console.info('Success to insertText. ');
+        console.info('Succeeded in inserting text. ');
     } else {
         console.error('Failed to insertText. ');
     }
@@ -1951,14 +1945,14 @@ Inserts text. This API uses a promise to return the result.
 **Example**
 
 ```js
-TextInputClient.insertText('test').then((result) => {
+textInputClient.insertText('test').then((result) => {
     if (result) {
-        console.info('Success to insertText. ');
+        console.info('Succeeded in inserting text. ');
     } else {
         console.error('Failed to insertText. ');
     }
 }).catch((err) => {
-    console.error('insertText err: ' + JSON.stringify(err));
+    console.error('Failed to insertText: ' + JSON.stringify(err));
 });
 ```
 
@@ -1983,9 +1977,9 @@ Obtains the attribute of the edit box. This API uses an asynchronous callback to
 **Example**
 
 ```js
-TextInputClient.getEditorAttribute((err, editorAttribute) => {
-    if (err === undefined) {
-        console.error('getEditorAttribute err: ' + JSON.stringify(err));
+textInputClient.getEditorAttribute((err, editorAttribute) => {
+    if (err !== undefined) {
+        console.error('Failed to getEditorAttribute: ' + JSON.stringify(err));
         return;
     }
     console.log('editorAttribute.inputPattern: ' + JSON.stringify(editorAttribute.inputPattern));
@@ -2014,10 +2008,10 @@ Obtains the attribute of the edit box. This API uses a promise to return the res
 **Example**
 
 ```js
-TextInputClient.getEditorAttribute().then((editorAttribute) => {
+textInputClient.getEditorAttribute().then((editorAttribute) => {
     console.info('editorAttribute.inputPattern: ' + JSON.stringify(editorAttribute.inputPattern));
     console.info('editorAttribute.enterKeyType: ' + JSON.stringify(editorAttribute.enterKeyType));
 }).catch((err) => {
-    console.error('getEditorAttribute err: ' + JSON.stringify(err));
+    console.error('Failed to getEditorAttribute: ' + JSON.stringify(err));
 });
 ```
diff --git a/en/application-dev/reference/apis/js-apis-intl.md b/en/application-dev/reference/apis/js-apis-intl.md
index 79cdf3ac5627984eba2f03e7eb37b9cc7137de4a..e3cb7bbfd684ae315d6d54363183401442f5167a 100644
--- a/en/application-dev/reference/apis/js-apis-intl.md
+++ b/en/application-dev/reference/apis/js-apis-intl.md
@@ -1,6 +1,6 @@
 # Internationalization – Intl
 
-This module provides basic I18N capabilities, such as time and date formatting, number formatting, and string sorting, through the standard I18N APIs defined in ECMA 402.
+The Intl module provides basic I18N capabilities, such as time and date formatting, number formatting, and string sorting, through the standard I18N APIs defined in ECMA 402.
 
 The [I18N](js-apis-i18n.md) module provides enhanced I18N capabilities through supplementary APIs that are not defined in ECMA 402. It works with the Intl module to provide a complete suite of I18N capabilities.
 
diff --git a/en/application-dev/reference/apis/js-apis-keycode.md b/en/application-dev/reference/apis/js-apis-keycode.md
index 6680ea14f2ea3daa0d9144013469cf094c4904d2..a1261ce5d59d661af602b3ff3657a22ba3538764 100644
--- a/en/application-dev/reference/apis/js-apis-keycode.md
+++ b/en/application-dev/reference/apis/js-apis-keycode.md
@@ -2,7 +2,8 @@
 
 The Keycode module provides keycodes for a key device.
 
-> **NOTE**<br>
+> **NOTE**
+> 
 > The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 ## Modules to Import
@@ -337,7 +338,7 @@ import {KeyCode} from '@ohos.multimodalInput.keyCode';
 | KEYCODE_WWAN_WIMAX | number | Yes| No| WWAN WiMAX key|
 | KEYCODE_RFKILL | number | Yes| No| RF Kill key|
 | KEYCODE_CHANNEL | number | Yes| No| Channel key|
-| KEYCODE_BTN_0 | number | Yes| No| Key 0|
+| KEYCODE_BTN_0 | number | Yes| No| Button 0|
 | KEYCODE_BTN_1 | number | Yes| No| Button 1|
 | KEYCODE_BTN_2 | number | Yes| No| Button 2|
 | KEYCODE_BTN_3 | number | Yes| No| Button 3|
diff --git a/en/application-dev/reference/apis/js-apis-net-connection.md b/en/application-dev/reference/apis/js-apis-net-connection.md
index 31414ab325572d7ed25a31b1b3a78a725dce39e6..2fbe0e1c1d90b155fc52702d1dc69982e511c140 100644
--- a/en/application-dev/reference/apis/js-apis-net-connection.md
+++ b/en/application-dev/reference/apis/js-apis-net-connection.md
@@ -332,7 +332,6 @@ connection.getDefaultNet().then(function (netHandle) {
 });
 ```
 
-
 ## connection.reportNetConnected
 
 reportNetConnected(netHandle: NetHandle): Promise&lt;void&gt;
@@ -490,7 +489,6 @@ connection.getAddressesByName(host).then(function (addresses) {
 })
 ```
 
-
 ## connection.enableAirplaneMode
 
 enableAirplaneMode(callback: AsyncCallback\<void>): void
@@ -539,7 +537,6 @@ connection.enableAirplaneMode().then(function (error) {
 })
 ```
 
-
 ## connection.disableAirplaneMode
 
 disableAirplaneMode(callback: AsyncCallback\<void>): void
@@ -588,7 +585,6 @@ connection.disableAirplaneMode().then(function (error) {
 })
 ```
 
-
 ## connection.createNetConnection
 
 createNetConnection(netSpecifier?: NetSpecifier, timeout?: number): NetConnection
@@ -825,7 +821,7 @@ Before invoking NetHandle APIs, call **getNetHandle** to obtain a **NetHandle**
 
 | Name| Type  | Description                     |
 | ------ | ------ | ------------------------- |
-| netId  | number | Network ID. The value must be greater than or equal to 100.|
+| netId  | number | Network ID. The value **0** indicates no default network. Any other value must be greater than or equal to 100.|
 
 ### bindSocket
 
@@ -847,33 +843,50 @@ Binds a **TCPSocket** or **UDPSocket** object to the data network. This API uses
 **Example**
 
 ```js
-connection.getDefaultNet().then(function (netHandle) {
+import socket from "@ohos.net.socket";
+connection.getDefaultNet().then((netHandle)=>{
     var tcp = socket.constructTCPSocketInstance();
     var udp = socket.constructUDPSocketInstance();
-    let socketType = "xxxx";
+    let socketType = "TCPSocket";
     if (socketType == "TCPSocket") {
         tcp.bind({
-            address: "xxxx", port: xxxx, family: xxxx
+            address: '192.168.xx.xxx', port: xxxx, family: 1
         }, err => {
-            netHandle.bindSocket(tcp, function (error, data) {
-            console.log(JSON.stringify(error))
-            console.log(JSON.stringify(data))
+            if (err) {
+                console.log('bind fail');
+            }
+            netHandle.bindSocket(tcp, (error, data)=>{
+                if (error) {
+                    console.log(JSON.stringify(error));
+                } else {
+                    console.log(JSON.stringify(data));
+                }
+            })
         })
     } else {
+        let callback = value => {
+            console.log(TAG + "on message, message:" + value.message + ", remoteInfo:" + value.remoteInfo);
+        }
         udp.on('message', callback);
         udp.bind({
-            address: "xxxx", port: xxxx, family: xxxx
+            address: '192.168.xx.xxx', port: xxxx, family: 1
         }, err => {
+            if (err) {
+                console.log('bind fail');
+            }
             udp.on('message', (data) => {
-            console.log(JSON.stringify(data))
-            });
-            netHandle.bindSocket(udp, function (error, data) {
-            console.log(JSON.stringify(error))
-            console.log(JSON.stringify(data))
+                console.log(JSON.stringify(data))
             });
+            netHandle.bindSocket(udp,(error, data)=>{
+                if (error) {
+                    console.log(JSON.stringify(error));
+                } else {
+                    console.log(JSON.stringify(data));
+                }
+            })
         })
-     }
-}
+    }
+})
 ```
 
 ### bindSocket
@@ -901,31 +914,50 @@ Binds a **TCPSocket** or **UDPSocket** object to the data network. This API uses
 **Example**
 
 ```js
-connection.getDefaultNet().then(function (netHandle) {
+import socket from "@ohos.net.socket";
+connection.getDefaultNet().then((netHandle)=>{
     var tcp = socket.constructTCPSocketInstance();
     var udp = socket.constructUDPSocketInstance();
-    let socketType = "xxxx";
-    if(socketType == "TCPSocket") {
+    let socketType = "TCPSocket";
+    if (socketType == "TCPSocket") {
         tcp.bind({
-            address: "xxxx", port: xxxx, family: xxxx
+            address: '192.168.xx.xxx', port: xxxx, family: 1
         }, err => {
-            netHandle.bindSocket(tcp).then(err, data) {
-            console.log(JSON.stringify(data))
+            if (err) {
+                console.log('bind fail');
+            }
+            netHandle.bindSocket(tcp).then((err, data) => {
+                if (err) {
+                    console.log(JSON.stringify(err));
+                } else {
+                    console.log(JSON.stringify(data));
+                }
+            })
         })
     } else {
+        let callback = value => {
+            console.log(TAG + "on message, message:" + value.message + ", remoteInfo:" + value.remoteInfo);
+        }
         udp.on('message', callback);
         udp.bind({
-            address: "xxxx", port: xxxx, family: xxxx
+            address: '192.168.xx.xxx', port: xxxx, family: 1
         }, err => {
+            if (err) {
+                console.log('bind fail');
+            }
             udp.on('message', (data) => {
-            console.log(JSON.stringify(data))
-            });
-            netHandle.bindSocket(tcp).then(err, data) {
-            console.log(JSON.stringify(data))
-            });
+                console.log(JSON.stringify(data));
+            })
+            netHandle.bindSocket(udp).then((err, data) => {
+                if (err) {
+                    console.log(JSON.stringify(err));
+                } else {
+                    console.log(JSON.stringify(data));
+                }
+            })
         })
-     }
-}
+    }
+})
 ```
 
 
diff --git a/en/application-dev/reference/apis/js-apis-net-sharing.md b/en/application-dev/reference/apis/js-apis-net-sharing.md
index 23284aeb1715a3f8aed9ec7b2d79ad55d1408319..c63c09c5a84bbec34b5b2274d3089fad4fbb603b 100644
--- a/en/application-dev/reference/apis/js-apis-net-sharing.md
+++ b/en/application-dev/reference/apis/js-apis-net-sharing.md
@@ -1,6 +1,6 @@
 # Network Sharing Management
 
-The Network Sharing Management module allows you to share your device's Internet connection with other connected devices by means of Wi-Fi hotspot, Bluetooth, and USB sharing. It also allows you to query the network sharing state and shared mobile data volume.
+The Network Sharing Management module allows you to share your device's Internet connection with other connected devices by means of Wi-Fi hotspot, and Bluetooth sharing. It also allows you to query the network sharing state and shared mobile data volume.
 
 > **NOTE**
 >
@@ -405,7 +405,7 @@ Obtains the names of NICs in the specified network sharing state. This API uses
 **Example**
 
 ```js
-import SharingIfaceState from '@ohos.net.sharing'
+import SharingIfaceType from '@ohos.net.sharing'
 sharing.getSharingIfaces(SharingIfaceState.SHARING_NIC_CAN_SERVER, (error, data) => {
     console.log(JSON.stringify(error));
     console.log(JSON.stringify(data));
@@ -498,7 +498,7 @@ Obtains the network sharing state of the specified type. This API uses a promise
 
 ```js
 import SharingIfaceType from '@ohos.net.sharing'
-sharing.getSharingIfaces(SharingIfaceType.SHARING_WIFI).then(data => {
+sharing.getSharingState(SharingIfaceType.SHARING_WIFI).then(data => {
     console.log(JSON.stringify(data));
 }).catch(error => {
     console.log(JSON.stringify(error));
@@ -525,8 +525,8 @@ Obtains regular expressions of NICs of a specified type. This API uses an asynch
 **Example**
 
 ```js
-import SharingIfaceState from '@ohos.net.sharing'
-sharing.getSharingState(SharingIfaceType.SHARING_WIFI, (error, data) => {
+import SharingIfaceType from '@ohos.net.sharing'
+sharing.getSharableRegexes(SharingIfaceType.SHARING_WIFI, (error, data) => {
     console.log(JSON.stringify(error));
     console.log(JSON.stringify(data));
 });
@@ -565,7 +565,7 @@ sharing.getSharableRegexes(SharingIfaceType.SHARING_WIFI).then(data => {
 });
 ```
 
-## on('sharingStateChange')
+## sharing.on('sharingStateChange')
 
 on(type: 'sharingStateChange', callback: Callback\<boolean>): void
 
@@ -591,7 +591,7 @@ sharing.on('sharingStateChange', (error, data) => {
 });
 ```
 
-## off('sharingStateChange')
+## sharing.off('sharingStateChange')
 
 off(type: 'sharingStateChange', callback?: Callback\<boolean>): void
 
@@ -617,7 +617,7 @@ sharing.off('sharingStateChange', (error, data) => {
 });
 ```
 
-## on('interfaceSharingStateChange')
+## sharing.on('interfaceSharingStateChange')
 
 on(type: 'interfaceSharingStateChange', callback: Callback\<{ type: SharingIfaceType, iface: string, state: SharingIfaceState }>): void
 
@@ -643,7 +643,7 @@ sharing.on('interfaceSharingStateChange', (error, data) => {
 });
 ```
 
-## off('interfaceSharingStateChange')
+## sharing.off('interfaceSharingStateChange')
 
 off(type: 'interfaceSharingStateChange', callback?: Callback\<{ type: SharingIfaceType, iface: string, state: SharingIfaceState }>): void
 
@@ -669,7 +669,7 @@ sharing.off('interfaceSharingStateChange', (error, data) => {
 });
 ```
 
-## on('sharingUpstreamChange')
+## sharing.on('sharingUpstreamChange')
 
 on(type: 'sharingUpstreamChange', callback: Callback\<NetHandle>): void
 
@@ -695,7 +695,7 @@ sharing.on('sharingUpstreamChange', (error, data) => {
 });
 ```
 
-## off('sharingUpstreamChange')
+## sharing.off('sharingUpstreamChange')
 
 off(type: 'sharingUpstreamChange', callback?: Callback\<NetHandle>): void
 
@@ -735,12 +735,12 @@ Enumerates the network sharing states of an NIC.
 
 ## SharingIfaceType
 
-Enumerates the network sharing types of an NIC.
+Enumerates the network sharing types of an NIC. 
 
 **System capability**: SystemCapability.Communication.NetManager.Core
 
 | Name                 | Value  | Description                  |
 | ------------------------ | ---- | ---------------------- |
 | SHARING_WIFI       | 0 | Wi-Fi hotspot sharing.|
-| SHARING_USB     | 1 | USB sharing.|
+| SHARING_USB     | 1 | USB sharing (not supported currently).|
 | SHARING_BLUETOOTH    | 2 | Bluetooth sharing.|
diff --git a/en/application-dev/reference/apis/js-apis-notification.md b/en/application-dev/reference/apis/js-apis-notification.md
index 99dd6551d098ddf0d6f58a69bde92191e38d083d..9fdf5e1f345b68fcd99e6e027cfb0c44d5da29d8 100644
--- a/en/application-dev/reference/apis/js-apis-notification.md
+++ b/en/application-dev/reference/apis/js-apis-notification.md
@@ -2,11 +2,11 @@
 
 The **Notification** module provides notification management capabilities, covering notifications, notification slots, notification subscription, notification enabled status, and notification badge status.
 
-Generally, only system applications have the permission to subscribe to and unsubscribe from notifications.
-
 > **NOTE**
 >
 > The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+>
+> Notification subscription and unsubscription APIs are available only to system applications.
 
 ## Modules to Import
 
@@ -26,8 +26,8 @@ Publishes a notification. This API uses an asynchronous callback to return the r
 
 | Name    | Type                                       | Mandatory| Description                                       |
 | -------- | ------------------------------------------- | ---- | ------------------------------------------- |
-| request  | [NotificationRequest](#notificationrequest) | Yes  | **NotificationRequest** object.|
-| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                           |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                       |
 
 **Example**
 
@@ -69,7 +69,7 @@ Publishes a notification. This API uses a promise to return the result.
 
 | Name    | Type                                       | Mandatory| Description                                       |
 | -------- | ------------------------------------------- | ---- | ------------------------------------------- |
-| request  | [NotificationRequest](#notificationrequest) | Yes  | **NotificationRequest** object.|
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
 
 **Example**
 
@@ -87,7 +87,7 @@ var notificationRequest = {
     }
 }
 Notification.publish(notificationRequest).then(() => {
-	console.info("publish sucess");
+	console.info("publish success");
 });
 
 ```
@@ -96,7 +96,7 @@ Notification.publish(notificationRequest).then(() => {
 
 publish(request: NotificationRequest, userId: number, callback: AsyncCallback\<void\>): void
 
-Publishes a notification. This API uses an asynchronous callback to return the result.
+Publishes a notification to a specified user. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -108,8 +108,8 @@ Publishes a notification. This API uses an asynchronous callback to return the r
 
 | Name    | Type                                       | Mandatory| Description                                       |
 | -------- | ----------------------------------------- | ---- | ------------------------------------------- |
-| request  | [NotificationRequest](#notificationrequest) | Yes  | **NotificationRequest** object.|
-| userId   | number                                      | Yes  | ID of the user who receives the notification.                          |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| userId   | number                                      | Yes  | User ID.                          |
 | callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                          |
 
 **Example**
@@ -123,7 +123,7 @@ function publishCallback(err) {
         console.info("publish success");
     }
 }
-// ID of the user who receives the notification
+// User ID
 var userId = 1
 // NotificationRequest object
 var notificationRequest = {
@@ -144,7 +144,7 @@ Notification.publish(notificationRequest, userId, publishCallback);
 
 publish(request: NotificationRequest, userId: number): Promise\<void\>
 
-Publishes a notification. This API uses a promise to return the result.
+Publishes a notification to a specified user. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -156,8 +156,8 @@ Publishes a notification. This API uses a promise to return the result.
 
 | Name    |  Type                                       | Mandatory| Description                                       |
 | -------- | ----------------------------------------- | ---- | ------------------------------------------- |
-| request  | [NotificationRequest](#notificationrequest) | Yes  | **NotificationRequest** object.|
-| userId   | number                                      | Yes  | ID of the user who receives the notification.                          |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| userId   | number                                      | Yes  | User ID.                          |
 
 **Example**
 
@@ -177,7 +177,7 @@ var notificationRequest = {
 var userId = 1
 
 Notification.publish(notificationRequest, userId).then(() => {
-	console.info("publish sucess");
+	console.info("publish success");
 });
 ```
 
@@ -218,7 +218,7 @@ Notification.cancel(0, "label", cancelCallback)
 
 cancel(id: number, label?: string): Promise\<void\>
 
-Cancels a notification with the specified ID and label. This API uses a promise to return the result.
+Cancels a notification with the specified ID and optional label. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -233,7 +233,7 @@ Cancels a notification with the specified ID and label. This API uses a promise
 
 ```js
 Notification.cancel(0).then(() => {
-	console.info("cancel sucess");
+	console.info("cancel success");
 });
 ```
 
@@ -312,7 +312,7 @@ Cancels all notifications. This API uses a promise to return the result.
 
 ```js
 Notification.cancelAll().then(() => {
-	console.info("cancelAll sucess");
+	console.info("cancelAll success");
 });
 ```
 
@@ -383,7 +383,7 @@ var notificationSlot = {
     type: Notification.SlotType.SOCIAL_COMMUNICATION
 }
 Notification.addSlot(notificationSlot).then(() => {
-	console.info("addSlot sucess");
+	console.info("addSlot success");
 });
 ```
 
@@ -393,7 +393,7 @@ Notification.addSlot(notificationSlot).then(() => {
 
 addSlot(type: SlotType, callback: AsyncCallback\<void\>): void
 
-Adds a notification slot. This API uses an asynchronous callback to return the result.
+Adds a notification slot of a specified type. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -424,7 +424,7 @@ Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION, addSlotCallBack
 
 addSlot(type: SlotType): Promise\<void\>
 
-Adds a notification slot. This API uses a promise to return the result.
+Adds a notification slot of a specified type. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -438,7 +438,7 @@ Adds a notification slot. This API uses a promise to return the result.
 
 ```js
 Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION).then(() => {
-	console.info("addSlot sucess");
+	console.info("addSlot success");
 });
 ```
 
@@ -448,7 +448,7 @@ Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION).then(() => {
 
 addSlots(slots: Array\<NotificationSlot\>, callback: AsyncCallback\<void\>): void
 
-Adds multiple notification slots. This API uses an asynchronous callback to return the result.
+Adds an array of notification slots. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -491,7 +491,7 @@ Notification.addSlots(notificationSlotArray, addSlotsCallBack)
 
 addSlots(slots: Array\<NotificationSlot\>): Promise\<void\>
 
-Adds multiple notification slots. This API uses a promise to return the result.
+Adds an array of notification slots. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -517,7 +517,7 @@ var notificationSlotArray = new Array();
 notificationSlotArray[0] = notificationSlot;
 
 Notification.addSlots(notificationSlotArray).then(() => {
-	console.info("addSlots sucess");
+	console.info("addSlots success");
 });
 ```
 
@@ -527,7 +527,7 @@ Notification.addSlots(notificationSlotArray).then(() => {
 
 getSlot(slotType: SlotType, callback: AsyncCallback\<NotificationSlot\>): void
 
-Obtains a notification slot of the specified type. This API uses an asynchronous callback to return the result.
+Obtains a notification slot of a specified type. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -542,7 +542,7 @@ Obtains a notification slot of the specified type. This API uses an asynchronous
 
 ```js
 // getSlot callback
-function getSlotCallback(err,data) {
+function getSlotCallback(err, data) {
     if (err.code) {
         console.info("getSlot failed " + JSON.stringify(err));
     } else {
@@ -559,7 +559,7 @@ Notification.getSlot(slotType, getSlotCallback)
 
 getSlot(slotType: SlotType): Promise\<NotificationSlot\>
 
-Obtains a notification slot of the specified type. This API uses a promise to return the result.
+Obtains a notification slot of a specified type. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -580,7 +580,7 @@ Obtains a notification slot of the specified type. This API uses a promise to re
 ```js
 var slotType = Notification.SlotType.SOCIAL_COMMUNICATION;
 Notification.getSlot(slotType).then((data) => {
-	console.info("getSlot sucess, data: " + JSON.stringify(data));
+	console.info("getSlot success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -604,7 +604,7 @@ Obtains all notification slots. This API uses an asynchronous callback to return
 
 ```js
 // getSlots callback
-function getSlotsCallback(err,data) {
+function getSlotsCallback(err, data) {
     if (err.code) {
         console.info("getSlots failed " + JSON.stringify(err));
     } else {
@@ -634,7 +634,7 @@ Obtains all notification slots of this application. This API uses a promise to r
 
 ```js
 Notification.getSlots().then((data) => {
-	console.info("getSlots sucess, data: " + JSON.stringify(data));
+	console.info("getSlots success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -644,7 +644,7 @@ Notification.getSlots().then((data) => {
 
 removeSlot(slotType: SlotType, callback: AsyncCallback\<void\>): void
 
-Removes a notification slot of the specified type. This API uses an asynchronous callback to return the result.
+Removes a notification slot of a specified type. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -676,7 +676,7 @@ Notification.removeSlot(slotType,removeSlotCallback)
 
 removeSlot(slotType: SlotType): Promise\<void\>
 
-Removes a notification slot of the specified type. This API uses a promise to return the result.
+Removes a notification slot of a specified type. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -691,7 +691,7 @@ Removes a notification slot of the specified type. This API uses a promise to re
 ```js
 var slotType = Notification.SlotType.SOCIAL_COMMUNICATION;
 Notification.removeSlot(slotType).then(() => {
-	console.info("removeSlot sucess");
+	console.info("removeSlot success");
 });
 ```
 
@@ -738,7 +738,7 @@ Removes all notification slots. This API uses a promise to return the result.
 
 ```js
 Notification.removeAllSlots().then(() => {
-	console.info("removeAllSlots sucess");
+	console.info("removeAllSlots success");
 });
 ```
 
@@ -761,7 +761,7 @@ Subscribes to a notification with the subscription information specified. This A
 | Name      | Type                     | Mandatory| Description            |
 | ---------- | ------------------------- | ---- | ---------------- |
 | subscriber | [NotificationSubscriber](#notificationsubscriber)    | Yes  | Notification subscriber.    |
-| info       | [NotificationSubscribeInfo](#notificationsubscribeinfo) | Yes  | Subscription information.        |
+| info       | [NotificationSubscribeInfo](#notificationsubscribeinfo) | Yes  | Notification subscription information.|
 | callback   | AsyncCallback\<void\>     | Yes  | Callback used to return the result.|
 
 **Example**
@@ -782,7 +782,7 @@ var subscriber = {
     onConsume: onConsumeCallback
 }
 var info = {
-    bundleNames: ["bundleName1","bundleName2"]
+    bundleNames: ["bundleName1", "bundleName2"]
 }
 Notification.subscribe(subscriber, info, subscribeCallback);
 ```
@@ -793,7 +793,7 @@ Notification.subscribe(subscriber, info, subscribeCallback);
 
 subscribe(subscriber: NotificationSubscriber, callback: AsyncCallback\<void\>): void
 
-Subscribes to a notification with the subscription information specified. This API uses an asynchronous callback to return the result.
+Subscribes to notifications of all applications under this user. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -846,7 +846,7 @@ Subscribes to a notification with the subscription information specified. This A
 | Name      | Type                     | Mandatory| Description        |
 | ---------- | ------------------------- | ---- | ------------ |
 | subscriber | [NotificationSubscriber](#notificationsubscriber)    | Yes  | Notification subscriber.|
-| info       | [NotificationSubscribeInfo](#notificationsubscribeinfo) | No  | Subscription information.    |
+| info       | [NotificationSubscribeInfo](#notificationsubscribeinfo) | No  | Notification subscription information.  |
 
 **Example**
 
@@ -858,7 +858,7 @@ var subscriber = {
     onConsume: onConsumeCallback
 };
 Notification.subscribe(subscriber).then(() => {
-	console.info("subscribe sucess");
+	console.info("subscribe success");
 });
 ```
 
@@ -893,11 +893,11 @@ function unsubscribeCallback(err) {
         console.info("unsubscribe success");
     }
 }
-function onCancelCallback(data) {
+function onDisconnectCallback(data) {
 	console.info("Cancel callback: " + JSON.stringify(data));
 }
 var subscriber = {
-    onCancel: onCancelCallback
+    onDisconnect: onDisconnectCallback
 }
 Notification.unsubscribe(subscriber, unsubscribeCallback);
 ```
@@ -925,14 +925,14 @@ Unsubscribes from a notification. This API uses a promise to return the result.
 **Example**
 
 ```js
-function onCancelCallback(data) {
+function onDisconnectCallback(data) {
 	console.info("Cancel callback: " + JSON.stringify(data));
 }
 var subscriber = {
-    onCancel: onCancelCallback
+    onDisconnect: onDisconnectCallback
 };
 Notification.unsubscribe(subscriber).then(() => {
-	console.info("unsubscribe sucess");
+	console.info("unsubscribe success");
 });
 ```
 
@@ -942,7 +942,7 @@ Notification.unsubscribe(subscriber).then(() => {
 
 enableNotification(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void\>): void
 
-Sets whether to enable notification for a specified bundle. This API uses an asynchronous callback to return the result.
+Sets whether to enable notification for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -954,7 +954,7 @@ Sets whether to enable notification for a specified bundle. This API uses an asy
 
 | Name    | Type                 | Mandatory| Description                |
 | -------- | --------------------- | ---- | -------------------- |
-| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information.          |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.       |
 | enable   | boolean               | Yes  | Whether to enable notification.            |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
@@ -980,7 +980,7 @@ Notification.enableNotification(bundle, false, enableNotificationCallback);
 
 enableNotification(bundle: BundleOption, enable: boolean): Promise\<void\>
 
-Sets whether to enable notification for a specified bundle. This API uses a promise to return the result.
+Sets whether to enable notification for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -992,7 +992,7 @@ Sets whether to enable notification for a specified bundle. This API uses a prom
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 | enable | boolean      | Yes  | Whether to enable notification.  |
 
 **Example**
@@ -1002,7 +1002,7 @@ var bundle = {
     bundle: "bundleName1",
 }
 Notification.enableNotification(bundle, false).then(() => {
-	console.info("enableNotification sucess");
+	console.info("enableNotification success");
 });
 ```
 
@@ -1012,7 +1012,7 @@ Notification.enableNotification(bundle, false).then(() => {
 
 isNotificationEnabled(bundle: BundleOption, callback: AsyncCallback\<boolean\>): void
 
-Checks whether notification is enabled for a specified bundle. This API uses an asynchronous callback to return the result.
+Checks whether notification is enabled for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1024,7 +1024,7 @@ Checks whether notification is enabled for a specified bundle. This API uses an
 
 | Name    | Type                 | Mandatory| Description                    |
 | -------- | --------------------- | ---- | ------------------------ |
-| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information.              |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.           |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -1049,7 +1049,7 @@ Notification.isNotificationEnabled(bundle, isNotificationEnabledCallback);
 
 isNotificationEnabled(bundle: BundleOption): Promise\<boolean\>
 
-Checks whether notification is enabled for a specified bundle. This API uses a promise to return the result.
+Checks whether notification is enabled for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1061,12 +1061,12 @@ Checks whether notification is enabled for a specified bundle. This API uses a p
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Type              | Description                                               |
+| ------------------ | --------------------------------------------------- |
 | Promise\<boolean\> | Promise used to return the result.|
 
 **Example**
@@ -1076,7 +1076,7 @@ var bundle = {
     bundle: "bundleName1",
 }
 Notification.isNotificationEnabled(bundle).then((data) => {
-	console.info("isNotificationEnabled sucess, data: " + JSON.stringify(data));
+	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1132,7 +1132,7 @@ Checks whether notification is enabled for this application. This API uses a pro
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 
 **Return value**
 
@@ -1144,7 +1144,7 @@ Checks whether notification is enabled for this application. This API uses a pro
 
 ```js
 Notification.isNotificationEnabled().then((data) => {
-	console.info("isNotificationEnabled sucess, data: " + JSON.stringify(data));
+	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1154,7 +1154,7 @@ Notification.isNotificationEnabled().then((data) => {
 
 displayBadge(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void\>): void
 
-Sets whether to enable the notification badge for a specified bundle. This API uses an asynchronous callback to return the result.
+Sets whether to enable the notification badge for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1166,7 +1166,7 @@ Sets whether to enable the notification badge for a specified bundle. This API u
 
 | Name    | Type                 | Mandatory| Description                |
 | -------- | --------------------- | ---- | -------------------- |
-| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information.          |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.          |
 | enable   | boolean               | Yes  | Whether to enable notification.            |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
@@ -1192,7 +1192,7 @@ Notification.displayBadge(bundle, false, displayBadgeCallback);
 
 displayBadge(bundle: BundleOption, enable: boolean): Promise\<void\>
 
-Sets the notification slot for a specified bundle. This API uses a promise to return the result.
+Sets whether to enable the notification badge for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1204,7 +1204,7 @@ Sets the notification slot for a specified bundle. This API uses a promise to re
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 | enable | boolean      | Yes  | Whether to enable notification.  |
 
 **Example**
@@ -1214,7 +1214,7 @@ var bundle = {
     bundle: "bundleName1",
 }
 Notification.displayBadge(bundle, false).then(() => {
-	console.info("displayBadge sucess");
+	console.info("displayBadge success");
 });
 ```
 
@@ -1224,7 +1224,7 @@ Notification.displayBadge(bundle, false).then(() => {
 
 isBadgeDisplayed(bundle: BundleOption, callback: AsyncCallback\<boolean\>): void
 
-Checks whether the notification badge is enabled for a specified bundle. This API uses an asynchronous callback to return the result.
+Checks whether the notification badge is enabled for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1236,7 +1236,7 @@ Checks whether the notification badge is enabled for a specified bundle. This AP
 
 | Name    | Type                 | Mandatory| Description                    |
 | -------- | --------------------- | ---- | ------------------------ |
-| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information.              |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.              |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -1261,7 +1261,7 @@ Notification.isBadgeDisplayed(bundle, isBadgeDisplayedCallback);
 
 isBadgeDisplayed(bundle: BundleOption): Promise\<boolean\>
 
-Checks whether the notification badge is enabled for a specified bundle. This API uses a promise to return the result.
+Checks whether the notification badge is enabled for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1273,7 +1273,7 @@ Checks whether the notification badge is enabled for a specified bundle. This AP
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 
 **Return value**
 
@@ -1288,7 +1288,7 @@ var bundle = {
     bundle: "bundleName1",
 }
 Notification.isBadgeDisplayed(bundle).then((data) => {
-	console.info("isBadgeDisplayed sucess, data: " + JSON.stringify(data));
+	console.info("isBadgeDisplayed success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1298,7 +1298,7 @@ Notification.isBadgeDisplayed(bundle).then((data) => {
 
 setSlotByBundle(bundle: BundleOption, slot: NotificationSlot, callback: AsyncCallback\<void\>): void
 
-Sets the notification slot for a specified bundle. This API uses an asynchronous callback to return the result.
+Sets the notification slot for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1310,7 +1310,7 @@ Sets the notification slot for a specified bundle. This API uses an asynchronous
 
 | Name    | Type                 | Mandatory| Description                |
 | -------- | --------------------- | ---- | -------------------- |
-| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information.          |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.          |
 | slot     | [NotificationSlot](#notificationslot)      | Yes  | Notification slot.            |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
@@ -1339,7 +1339,7 @@ Notification.setSlotByBundle(bundle, notificationSlot, setSlotByBundleCallback);
 
 setSlotByBundle(bundle: BundleOption, slot: NotificationSlot): Promise\<void\>
 
-Sets the notification slot for a specified bundle. This API uses a promise to return the result.
+Sets the notification slot for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1351,8 +1351,8 @@ Sets the notification slot for a specified bundle. This API uses a promise to re
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
-| slot   | [NotificationSlot](#notificationslot) | Yes  | Whether to enable notification.  |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
+| slot   | [NotificationSlot](#notificationslot) | Yes  | Notification slot.|
 
 **Example**
 
@@ -1364,7 +1364,7 @@ var notificationSlot = {
     type: Notification.SlotType.SOCIAL_COMMUNICATION
 }
 Notification.setSlotByBundle(bundle, notificationSlot).then(() => {
-	console.info("setSlotByBundle sucess");
+	console.info("setSlotByBundle success");
 });
 ```
 
@@ -1374,7 +1374,7 @@ Notification.setSlotByBundle(bundle, notificationSlot).then(() => {
 
 getSlotsByBundle(bundle: BundleOption, callback: AsyncCallback<Array\<NotificationSlot\>>): void
 
-Obtains the notification slots of a specified bundle. This API uses an asynchronous callback to return the result.
+Obtains the notification slots of a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1386,7 +1386,7 @@ Obtains the notification slots of a specified bundle. This API uses an asynchron
 
 | Name    | Type                                    | Mandatory| Description                |
 | -------- | ---------------------------------------- | ---- | -------------------- |
-| bundle   | [BundleOption](#bundleoption)                             | Yes  | Bundle information.          |
+| bundle   | [BundleOption](#bundleoption)                             | Yes  | Bundle information of the application.          |
 | callback | AsyncCallback<Array\<[NotificationSlot](#notificationslot)\>> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -1411,7 +1411,7 @@ Notification.getSlotsByBundle(bundle, getSlotsByBundleCallback);
 
 getSlotsByBundle(bundle: BundleOption): Promise<Array\<NotificationSlot\>>
 
-Obtains the notification slots of a specified bundle. This API uses a promise to return the result.
+Obtains the notification slots of a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1423,7 +1423,7 @@ Obtains the notification slots of a specified bundle. This API uses a promise to
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 
 **Return value**
 
@@ -1438,7 +1438,7 @@ var bundle = {
     bundle: "bundleName1",
 }
 Notification.getSlotsByBundle(bundle).then((data) => {
-	console.info("getSlotsByBundle sucess, data: " + JSON.stringify(data));
+	console.info("getSlotsByBundle success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1448,7 +1448,7 @@ Notification.getSlotsByBundle(bundle).then((data) => {
 
 getSlotNumByBundle(bundle: BundleOption, callback: AsyncCallback\<number\>): void
 
-Obtains the number of notification slots of a specified bundle. This API uses an asynchronous callback to return the result.
+Obtains the number of notification slots of a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1460,7 +1460,7 @@ Obtains the number of notification slots of a specified bundle. This API uses an
 
 | Name    | Type                     | Mandatory| Description                  |
 | -------- | ------------------------- | ---- | ---------------------- |
-| bundle   | [BundleOption](#bundleoption)              | Yes  | Bundle information.            |
+| bundle   | [BundleOption](#bundleoption)              | Yes  | Bundle information of the application.            |
 | callback | AsyncCallback\<number\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -1485,7 +1485,7 @@ Notification.getSlotNumByBundle(bundle, getSlotNumByBundleCallback);
 
 getSlotNumByBundle(bundle: BundleOption): Promise\<number\>
 
-Obtains the number of notification slots of a specified bundle. This API uses a promise to return the result.
+Obtains the number of notification slots of a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1497,7 +1497,7 @@ Obtains the number of notification slots of a specified bundle. This API uses a
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.|
 
 **Return value**
 
@@ -1512,7 +1512,7 @@ var bundle = {
     bundle: "bundleName1",
 }
 Notification.getSlotNumByBundle(bundle).then((data) => {
-	console.info("getSlotNumByBundle sucess, data: " + JSON.stringify(data));
+	console.info("getSlotNumByBundle success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1534,7 +1534,7 @@ Removes a notification for a specified bundle. This API uses an asynchronous cal
 
 | Name           | Type                               | Mandatory| Description                |
 | --------------- |   ----------------------------------| ---- | -------------------- |
-| bundle          | [BundleOption](#bundleoption)       | Yes  | Bundle information.          |
+| bundle          | [BundleOption](#bundleoption)       | Yes  | Bundle information of the application.          |
 | notificationKey | [NotificationKey](#notificationkey) | Yes  | Notification key.            |
 | reason          | [RemoveReason](#removereason9)      | Yes  | Indicates the reason for deleting a notification.        |
 | callback        | AsyncCallback\<void\>               | Yes  | Callback used to return the result.|
@@ -1578,7 +1578,7 @@ Removes a notification for a specified bundle. This API uses a promise to return
 
 | Name           | Type           | Mandatory| Description      |
 | --------------- | --------------- | ---- | ---------- |
-| bundle          | [BundleOption](#bundleoption)    | Yes  | Bundle information.|
+| bundle          | [BundleOption](#bundleoption)    | Yes  | Bundle information of the application.|
 | notificationKey | [NotificationKey](#notificationkey) | Yes  | Notification key.  |
 | reason          | [RemoveReason](#removereason9) | Yes  | Reason for deleting the notification.        |
 
@@ -1594,7 +1594,7 @@ var notificationKey = {
 }
 var reason = Notification.RemoveReason.CLICK_REASON_REMOVE;
 Notification.remove(bundle, notificationKey, reason).then(() => {
-	console.info("remove sucess");
+	console.info("remove success");
 });
 ```
 
@@ -1616,7 +1616,7 @@ Removes a notification for a specified bundle. This API uses an asynchronous cal
 
 | Name    | Type                 | Mandatory| Description                |
 | -------- | --------------------- | ---- | -------------------- |
-| hashCode | string                | Yes  | Unique notification ID.          |
+| hashCode | string                | Yes  | Unique notification ID. It is the **hashCode** in the [NotificationRequest](#notificationrequest) object of [SubscribeCallbackData](#subscribecallbackdata) of the [onConsume](#onconsume) callback.|
 | reason   | [RemoveReason](#removereason9) | Yes  | Indicates the reason for deleting a notification.        |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
@@ -1663,7 +1663,7 @@ Removes a notification for a specified bundle. This API uses a promise to return
 var hashCode = 'hashCode'
 var reason = Notification.RemoveReason.CLICK_REASON_REMOVE;
 Notification.remove(hashCode, reason).then(() => {
-	console.info("remove sucess");
+	console.info("remove success");
 });
 ```
 
@@ -1673,7 +1673,7 @@ Notification.remove(hashCode, reason).then(() => {
 
 removeAll(bundle: BundleOption, callback: AsyncCallback\<void\>): void
 
-Removes all notifications for a specified bundle. This API uses an asynchronous callback to return the result.
+Removes all notifications for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1685,7 +1685,7 @@ Removes all notifications for a specified bundle. This API uses an asynchronous
 
 | Name    | Type                 | Mandatory| Description                        |
 | -------- | --------------------- | ---- | ---------------------------- |
-| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information.                  |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.                  |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -1744,7 +1744,7 @@ Notification.removeAll(removeAllCallback);
 
 removeAll(bundle?: BundleOption): Promise\<void\>
 
-Removes all notifications for a specified user. This API uses a promise to return the result.
+Removes all notifications for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1756,13 +1756,14 @@ Removes all notifications for a specified user. This API uses a promise to retur
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| bundle | [BundleOption](#bundleoption) | No  | Bundle information.|
+| bundle | [BundleOption](#bundleoption) | No  | Bundle information of the application.|
 
 **Example**
 
 ```js
+// If no application is specified, notifications of all applications are deleted.
 Notification.removeAll().then(() => {
-	console.info("removeAll sucess");
+	console.info("removeAll success");
 });
 ```
 
@@ -1782,7 +1783,7 @@ Removes all notifications for a specified user. This API uses an asynchronous ca
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| userId | number | Yes  | ID of the user who receives the notification.|
+| userId | number | Yes  | User ID.|
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -1797,7 +1798,6 @@ function removeAllCallback(err) {
 }
 
 var userId = 1
-
 Notification.removeAll(userId, removeAllCallback);
 ```
 
@@ -1817,22 +1817,15 @@ Removes all notifications for a specified user. This API uses a promise to retur
 
 | Name  | Type        | Mandatory| Description      |
 | ------ | ------------ | ---- | ---------- |
-| userId | number | Yes  | ID of the user who receives the notification.|
+| userId | number | Yes  | User ID.|
 
 **Example**
 
 ```js
-function removeAllCallback(err) {
-    if (err.code) {
-        console.info("removeAll failed " + JSON.stringify(err));
-    } else {
-        console.info("removeAll success");
-    }
-}
-
 var userId = 1
-
-Notification.removeAll(userId, removeAllCallback);
+Notification.removeAll(userId).then(() => {
+	console.info("removeAll success");
+});
 ```
 
 
@@ -1892,7 +1885,7 @@ Obtains all active notifications. This API uses a promise to return the result.
 
 ```js
 Notification.getAllActiveNotifications().then((data) => {
-	console.info("getAllActiveNotifications sucess, data: " + JSON.stringify(data));
+	console.info("getAllActiveNotifications success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1902,7 +1895,7 @@ Notification.getAllActiveNotifications().then((data) => {
 
 getActiveNotificationCount(callback: AsyncCallback\<number\>): void
 
-Obtains the number of active notifications. This API uses an asynchronous callback to return the result.
+Obtains the number of active notifications of this application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -1932,21 +1925,21 @@ Notification.getActiveNotificationCount(getActiveNotificationCountCallback);
 
 getActiveNotificationCount(): Promise\<number\>
 
-Obtains the number of active notifications. This API uses a promise to return the result.
+Obtains the number of active notifications of this application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Type             | Description                                       |
+| ----------------- | ------------------------------------------- |
 | Promise\<number\> | Promise used to return the result.|
 
 **Example**
 
 ```js
 Notification.getActiveNotificationCount().then((data) => {
-	console.info("getActiveNotificationCount sucess, data: " + JSON.stringify(data));
+	console.info("getActiveNotificationCount success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -1992,15 +1985,15 @@ Obtains active notifications of this application. This API uses a promise to ret
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Type                                                        | Description                                   |
+| ------------------------------------------------------------ | --------------------------------------- |
 | Promise\<Array\<[NotificationRequest](#notificationrequest)\>\> | Promise used to return the result.|
 
 **Example**
 
 ```js
 Notification.getActiveNotifications().then((data) => {
-	console.info("removeGroupByBundle sucess, data: " + JSON.stringify(data));
+	console.info("removeGroupByBundle success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -2010,7 +2003,7 @@ Notification.getActiveNotifications().then((data) => {
 
 cancelGroup(groupName: string, callback: AsyncCallback\<void\>): void
 
-Cancels a notification group of this application. This API uses an asynchronous callback to return the result.
+Cancels notifications under a notification group of this application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2018,7 +2011,7 @@ Cancels a notification group of this application. This API uses an asynchronous
 
 | Name     | Type                 | Mandatory| Description                        |
 | --------- | --------------------- | ---- | ---------------------------- |
-| groupName | string                | Yes  | Name of the notification group.              |
+| groupName | string                | Yes  | Name of the notification group, which is specified through [NotificationRequest](#notificationrequest) when the notification is published.|
 | callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -2043,7 +2036,7 @@ Notification.cancelGroup(groupName, cancelGroupCallback);
 
 cancelGroup(groupName: string): Promise\<void\>
 
-Cancels a notification group of this application. This API uses a promise to return the result.
+Cancels notifications under a notification group of this application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2058,7 +2051,7 @@ Cancels a notification group of this application. This API uses a promise to ret
 ```js
 var groupName = "GroupName";
 Notification.cancelGroup(groupName).then(() => {
-	console.info("cancelGroup sucess");
+	console.info("cancelGroup success");
 });
 ```
 
@@ -2068,7 +2061,7 @@ Notification.cancelGroup(groupName).then(() => {
 
 removeGroupByBundle(bundle: BundleOption, groupName: string, callback: AsyncCallback\<void\>): void
 
-Removes a notification group for a specified bundle. This API uses an asynchronous callback to return the result.
+Removes notifications under a notification group of a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2080,7 +2073,7 @@ Removes a notification group for a specified bundle. This API uses an asynchrono
 
 | Name     | Type                 | Mandatory| Description                        |
 | --------- | --------------------- | ---- | ---------------------------- |
-| bundle    | [BundleOption](#bundleoption)          | Yes  | Bundle information.                  |
+| bundle    | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.                  |
 | groupName | string                | Yes  | Name of the notification group.              |
 | callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
@@ -2107,7 +2100,7 @@ Notification.removeGroupByBundle(bundleOption, groupName, removeGroupByBundleCal
 
 removeGroupByBundle(bundle: BundleOption, groupName: string): Promise\<void\>
 
-Removes a notification group for a specified bundle. This API uses a promise to return the result.
+Removes notifications under a notification group of a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2119,7 +2112,7 @@ Removes a notification group for a specified bundle. This API uses a promise to
 
 | Name     | Type        | Mandatory| Description          |
 | --------- | ------------ | ---- | -------------- |
-| bundle    | [BundleOption](#bundleoption) | Yes  | Bundle information.    |
+| bundle    | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.    |
 | groupName | string       | Yes  | Name of the notification group.|
 
 **Example**
@@ -2128,7 +2121,7 @@ Removes a notification group for a specified bundle. This API uses a promise to
 var bundleOption = {bundle: "Bundle"};
 var groupName = "GroupName";
 Notification.removeGroupByBundle(bundleOption, groupName).then(() => {
-	console.info("removeGroupByBundle sucess");
+	console.info("removeGroupByBundle success");
 });
 ```
 
@@ -2202,7 +2195,7 @@ var doNotDisturbDate = {
     end: new Date(2021, 11, 15, 18, 0)
 }
 Notification.setDoNotDisturbDate(doNotDisturbDate).then(() => {
-	console.info("setDoNotDisturbDate sucess");
+	console.info("setDoNotDisturbDate success");
 });
 ```
 
@@ -2224,7 +2217,7 @@ Sets the DND time for a specified user. This API uses an asynchronous callback t
 | Name    | Type                 | Mandatory| Description                  |
 | -------- | --------------------- | ---- | ---------------------- |
 | date     | [DoNotDisturbDate](#donotdisturbdate8)      | Yes  | DND time to set.        |
-| userId   | number                | Yes  | User ID.|
+| userId   | number                | Yes  | ID of the user for whom you want to set the DND time.|
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -2245,7 +2238,6 @@ var doNotDisturbDate = {
 }
 
 var userId = 1
-
 Notification.setDoNotDisturbDate(doNotDisturbDate, userId, setDoNotDisturbDateCallback);
 ```
 
@@ -2268,7 +2260,7 @@ Sets the DND time for a specified user. This API uses a promise to return the re
 | Name  | Type            | Mandatory| Description          |
 | ------ | ---------------- | ---- | -------------- |
 | date   | [DoNotDisturbDate](#donotdisturbdate8) | Yes  | DND time to set.|
-| userId | number           | Yes  | User ID.|
+| userId | number           | Yes  | ID of the user for whom you want to set the DND time.|
 
 **Example**
 
@@ -2282,7 +2274,7 @@ var doNotDisturbDate = {
 var userId = 1
 
 Notification.setDoNotDisturbDate(doNotDisturbDate, userId).then(() => {
-	console.info("setDoNotDisturbDate sucess");
+	console.info("setDoNotDisturbDate success");
 });
 ```
 
@@ -2308,7 +2300,7 @@ Obtains the DND time. This API uses an asynchronous callback to return the resul
 **Example**
 
 ```js
-function getDoNotDisturbDateCallback(err,data) {
+function getDoNotDisturbDateCallback(err, data) {
     if (err.code) {
         console.info("getDoNotDisturbDate failed " + JSON.stringify(err));
     } else {
@@ -2335,15 +2327,15 @@ Obtains the DND time. This API uses a promise to return the result.
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Type                                             | Description                                     |
+| ------------------------------------------------- | ----------------------------------------- |
 | Promise\<[DoNotDisturbDate](#donotdisturbdate8)\> | Promise used to return the result.|
 
 **Example**
 
 ```js
 Notification.getDoNotDisturbDate().then((data) => {
-	console.info("getDoNotDisturbDate sucess, data: " + JSON.stringify(data));
+	console.info("getDoNotDisturbDate success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -2405,8 +2397,8 @@ Obtains the DND time of a specified user. This API uses a promise to return the
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Type                                             | Description                                     |
+| ------------------------------------------------- | ----------------------------------------- |
 | Promise\<[DoNotDisturbDate](#donotdisturbdate8)\> | Promise used to return the result.|
 
 **Example**
@@ -2415,7 +2407,7 @@ Obtains the DND time of a specified user. This API uses a promise to return the
 var userId = 1
 
 Notification.getDoNotDisturbDate(userId).then((data) => {
-	console.info("getDoNotDisturbDate sucess, data: " + JSON.stringify(data));
+	console.info("getDoNotDisturbDate success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -2424,7 +2416,7 @@ Notification.getDoNotDisturbDate(userId).then((data) => {
 
 supportDoNotDisturbMode(callback: AsyncCallback\<boolean\>): void
 
-Checks whether the DND mode is supported. This API uses an asynchronous callback to return the result.
+Checks whether DND mode is supported. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2458,7 +2450,7 @@ Notification.supportDoNotDisturbMode(supportDoNotDisturbModeCallback);
 
 supportDoNotDisturbMode(): Promise\<boolean\>
 
-Checks whether the DND mode is supported. This API uses a promise to return the result.
+Checks whether DND mode is supported. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2476,7 +2468,7 @@ Checks whether the DND mode is supported. This API uses a promise to return the
 
 ```js
 Notification.supportDoNotDisturbMode().then((data) => {
-	console.info("supportDoNotDisturbMode sucess, data: " + JSON.stringify(data));
+	console.info("supportDoNotDisturbMode success, data: " + JSON.stringify(data));
 });
 ```
 
@@ -2567,7 +2559,7 @@ function requestEnableNotificationCallback(err) {
     if (err.code) {
         console.info("requestEnableNotification failed " + JSON.stringify(err));
     } else {
-        
+        console.info("requestEnableNotification success");
     }
 };
 
@@ -2587,10 +2579,9 @@ Requests notification to be enabled for this application. This API uses a promis
 **Example**
 
 ```javascript
-Notification.requestEnableNotification()
-    .then(() => {
-        console.info("requestEnableNotification sucess");
-	});
+Notification.requestEnableNotification().then(() => {
+    console.info("requestEnableNotification success");
+});
 ```
 
 
@@ -2610,7 +2601,7 @@ Sets whether this device supports distributed notifications. This API uses an as
 
 | Name  | Type                    | Mandatory| Description                      |
 | -------- | ------------------------ | ---- | -------------------------- |
-| enable   | boolean                  | Yes  | Whether the device supports distributed notifications.<br>**true**: The device supports distributed notifications.<br>**false**: The device does not support distributed notifications.|
+| enable   | boolean                  | Yes  | Whether the device supports distributed notifications.|
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
 **Example**
@@ -2647,17 +2638,15 @@ Sets whether this device supports distributed notifications. This API uses a pro
 
 | Name  | Type                    | Mandatory| Description                      |
 | -------- | ------------------------ | ---- | -------------------------- |
-| enable   | boolean                  | Yes  | Whether the device supports distributed notifications.<br>**true**: The device supports distributed notifications.<br>**false**: The device does not support distributed notifications.|
+| enable   | boolean                  | Yes  | Whether the device supports distributed notifications.|
 
 **Example**
 
 ```javascript
 var enable = true
-
-Notification.enableDistributed(enable)
-    .then(() => {
-        console.info("enableDistributed sucess");
-    });
+Notification.enableDistributed(enable).then(() => {
+    console.info("enableDistributed success");
+});
 ```
 
 
@@ -2665,7 +2654,7 @@ Notification.enableDistributed(enable)
 
 isDistributedEnabled(callback: AsyncCallback\<boolean>): void
 
-Obtains whether this device supports distributed notifications. This API uses an asynchronous callback to return the result.
+Checks whether this device supports distributed notifications. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2695,23 +2684,22 @@ Notification.isDistributedEnabled(isDistributedEnabledCallback);
 
 isDistributedEnabled(): Promise\<boolean>
 
-Obtains whether this device supports distributed notifications. This API uses a promise to return the result.
+Checks whether this device supports distributed notifications. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
 **Return value**
 
-| Type              | Description           |
-| ------------------ | --------------- |
-| Promise\<boolean\> | Promise used to return the result.<br>**true**: The device supports distributed notifications.<br>**false**: The device does not support distributed notifications.|
+| Type              | Description                                         |
+| ------------------ | --------------------------------------------- |
+| Promise\<boolean\> | Promise used to return the result.|
 
 **Example**
 
 ```javascript
-Notification.isDistributedEnabled()
-    .then((data) => {
-        console.info("isDistributedEnabled sucess, data: " + JSON.stringify(data));
-    });
+Notification.isDistributedEnabled().then((data) => {
+    console.info("isDistributedEnabled success, data: " + JSON.stringify(data));
+});
 ```
 
 
@@ -2719,7 +2707,7 @@ Notification.isDistributedEnabled()
 
 enableDistributedByBundle(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void>): void
 
-Sets whether an application supports distributed notifications based on the bundle. This API uses an asynchronous callback to return the result.
+Sets whether a specified application supports distributed notifications. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2731,7 +2719,7 @@ Sets whether an application supports distributed notifications based on the bund
 
 | Name  | Type                    | Mandatory| Description                      |
 | -------- | ------------------------ | ---- | -------------------------- |
-| bundle   | [BundleOption](#bundleoption)             | Yes  | Application bundle.                    |
+| bundle   | [BundleOption](#bundleoption)             | Yes  | Bundle information of the application.                  |
 | enable   | boolean                  | Yes  | Whether the device supports distributed notifications.                      |
 | callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
 
@@ -2761,7 +2749,7 @@ Notification.enableDistributedByBundle(bundle, enable, enableDistributedByBundle
 
 enableDistributedByBundle(bundle: BundleOption, enable: boolean): Promise\<void>
 
-Sets whether an application supports distributed notifications based on the bundle. This API uses a promise to return the result.
+Sets whether a specified application supports distributed notifications. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2784,11 +2772,9 @@ var bundle = {
 }
 
 var enable = true
-
-Notification.enableDistributedByBundle(bundle, enable)
-    .then(() => {
-        console.info("enableDistributedByBundle sucess");
-    });
+Notification.enableDistributedByBundle(bundle, enable).then(() => {
+    console.info("enableDistributedByBundle success");
+});
 ```
 
 ## Notification.isDistributedEnabledByBundle<sup>8+</sup>
@@ -2834,7 +2820,7 @@ Notification.isDistributedEnabledByBundle(bundle, isDistributedEnabledByBundleCa
 
 isDistributedEnabledByBundle(bundle: BundleOption): Promise\<boolean>
 
-Obtains whether an application supports distributed notifications based on the bundle. This API uses a promise to return the result.
+Checks whether a specified application supports distributed notifications. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -2850,9 +2836,9 @@ Obtains whether an application supports distributed notifications based on the b
 
 **Return value**
 
-| Type              | Description           |
-| ------------------ | --------------- |
-| Promise\<boolean\> | Promise used to return the result.<br>**true**: The device supports distributed notifications.<br>**false**: The device does not support distributed notifications.|
+| Type              | Description                                             |
+| ------------------ | ------------------------------------------------- |
+| Promise\<boolean\> | Promise used to return the result.|
 
 **Example**
 
@@ -2861,10 +2847,9 @@ var bundle = {
     bundle: "bundleName1",
 }
 
-Notification.isDistributedEnabledByBundle(bundle)
-    .then((data) => {
-        console.info("isDistributedEnabledByBundle sucess, data: " + JSON.stringify(data));
-    });
+Notification.isDistributedEnabledByBundle(bundle).then((data) => {
+    console.info("isDistributedEnabledByBundle success, data: " + JSON.stringify(data));
+});
 ```
 
 
@@ -2923,10 +2908,9 @@ Obtains the notification reminder type. This API uses a promise to return the re
 **Example**
 
 ```javascript
-Notification.getDeviceRemindType()
-    .then((data) => {
-        console.info("getDeviceRemindType sucess, data: " + JSON.stringify(data));
-    });
+Notification.getDeviceRemindType().then((data) => {
+    console.info("getDeviceRemindType success, data: " + JSON.stringify(data));
+});
 ```
 
 
@@ -2944,18 +2928,18 @@ Publishes an agent-powered notification. This API uses an asynchronous callback
 
 **Parameters**
 
-| Name              | Type                                       | Mandatory| Description                                         |
-| -------------------- | ------------------------------------------- | ---- | --------------------------------------------- |
-| request              | [NotificationRequest](#notificationrequest) | Yes  | **NotificationRequest** object.|
-| representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                           |
-| userId               | number                                      | Yes  | ID of the user who receives the notification.                           |
-| callback             | AsyncCallback                               | Yes  | Callback used to return the result.                     |
+| Name              | Type                                       | Mandatory| Description                                    |
+| -------------------- | ------------------------------------------- | ---- | ---------------------------------------- |
+| request              | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                      |
+| userId               | number                                      | Yes  | User ID.                                |
+| callback             | AsyncCallback                               | Yes  | Callback used to return the result.                |
 
 **Example**
 
 ```js
-// Callback for publishAsBundle
-function publishAsBundleCallback(err) {
+// publishAsBundle callback
+function callback(err) {
     if (err.code) {
         console.info("publishAsBundle failed " + JSON.stringify(err));
     } else {
@@ -2964,10 +2948,10 @@ function publishAsBundleCallback(err) {
 }
 // Bundle name of the application whose notification function is taken over by the reminder agent
 let representativeBundle = "com.example.demo"
-// ID of the user who receives the notification
+// User ID
 let userId = 100
 // NotificationRequest object
-let notificationRequest = {
+let request = {
     id: 1,
     content: {
         contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
@@ -2979,7 +2963,7 @@ let notificationRequest = {
     }
 }
 
-Notification.publishAsBundle(notificationRequest, representativeBundle, userId, publishAsBundleCallback);
+Notification.publishAsBundle(request, representativeBundle, userId, callback);
 ```
 
 ## Notification.publishAsBundle<sup>9+</sup>
@@ -2999,19 +2983,19 @@ Publishes a notification through the reminder agent. This API uses a promise to
 
 | Name              | Type                                       | Mandatory| Description                                         |
 | -------------------- | ------------------------------------------- | ---- | --------------------------------------------- |
-| request              | [NotificationRequest](#notificationrequest) | Yes  | **NotificationRequest** object.|
+| request              | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
 | representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                           |
-| userId               | number                                      | Yes  | ID of the user who receives the notification.                           |
+| userId               | number                                      | Yes  | User ID.                           |
 
 **Example**
 
 ```js
 // Bundle name of the application whose notification function is taken over by the reminder agent
 let representativeBundle = "com.example.demo"
-// ID of the user who receives the notification
+// User ID
 let userId = 100
 // NotificationRequest object
-var notificationRequest = {
+var request = {
     id: 1,
     content: {
         contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
@@ -3023,8 +3007,8 @@ var notificationRequest = {
     }
 }
 
-Notification.publishAsBundle(notificationRequest, representativeBundle, userId).then(() => {
-	console.info("publishAsBundle sucess");
+Notification.publishAsBundle(request, representativeBundle, userId).then(() => {
+	console.info("publishAsBundle success");
 });
 ```
 
@@ -3048,13 +3032,13 @@ Cancels a notification published by the reminder agent. This API uses an asynchr
 | -------------------- | ------------- | ---- | ------------------------ |
 | id                   | number        | Yes  | Notification ID.                |
 | representativeBundle | string        | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.      |
-| userId               | number        | Yes  | ID of the user who receives the notification.      |
+| userId               | number        | Yes  | User ID.      |
 | callback             | AsyncCallback | Yes  | Callback used to return the result.|
 
 **Example**
 
 ```js
-//cancelAsBundle
+// cancelAsBundle
 function cancelAsBundleCallback(err) {
     if (err.code) {
         console.info("cancelAsBundle failed " + JSON.stringify(err));
@@ -3064,7 +3048,7 @@ function cancelAsBundleCallback(err) {
 }
 // Bundle name of the application whose notification function is taken over by the reminder agent
 let representativeBundle = "com.example.demo"
-// ID of the user who receives the notification
+// User ID
 let userId = 100
 
 Notification.cancelAsBundle(0, representativeBundle, userId, cancelAsBundleCallback);
@@ -3074,7 +3058,7 @@ Notification.cancelAsBundle(0, representativeBundle, userId, cancelAsBundleCallb
 
 cancelAsBundle(id: number, representativeBundle: string, userId: number): Promise\<void\>
 
-Publishes a notification through the reminder agent. This API uses a promise to return the result.
+Cancels a notification published by the reminder agent. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3090,14 +3074,14 @@ Publishes a notification through the reminder agent. This API uses a promise to
 | -------------------- | ------ | ---- | ------------------ |
 | id                   | number | Yes  | Notification ID.          |
 | representativeBundle | string | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.|
-| userId               | number | Yes  | ID of the user who receives the notification.|
+| userId               | number | Yes  | User ID.|
 
 **Example**
 
 ```js
 // Bundle name of the application whose notification function is taken over by the reminder agent
 let representativeBundle = "com.example.demo"
-// ID of the user who receives the notification
+// User ID
 let userId = 100
 
 Notification.cancelAsBundle(0, representativeBundle, userId).then(() => {
@@ -3109,7 +3093,7 @@ Notification.cancelAsBundle(0, representativeBundle, userId).then(() => {
 
 enableNotificationSlot(bundle: BundleOption, type: SlotType, enable: boolean, callback: AsyncCallback\<void>): void
 
-Sets the enabled status for a notification slot of a specified type. This API uses an asynchronous callback to return the result.
+Sets the enabled status of a notification slot type for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3121,7 +3105,7 @@ Sets the enabled status for a notification slot of a specified type. This API us
 
 | Name  | Type                         | Mandatory| Description                  |
 | -------- | ----------------------------- | ---- | ---------------------- |
-| bundle   | [BundleOption](#bundleoption) | Yes  | Bundle information.          |
+| bundle   | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.          |
 | type     | [SlotType](#slottype)         | Yes  | Notification slot type.        |
 | enable   | boolean                       | Yes  | Whether to enable notification.            |
 | callback | AsyncCallback\<void\>         | Yes  | Callback used to return the result.|
@@ -3129,7 +3113,7 @@ Sets the enabled status for a notification slot of a specified type. This API us
 **Example**
 
 ```js
-//enableNotificationSlot
+// enableNotificationSlot
 function enableSlotCallback(err) {
     if (err.code) {
         console.info("enableNotificationSlot failed " + JSON.stringify(err));
@@ -3149,7 +3133,7 @@ Notification.enableNotificationSlot(
 
 enableNotificationSlot(bundle: BundleOption, type: SlotType, enable: boolean): Promise\<void> 
 
-Sets the enabled status for a notification slot of a specified type. This API uses a promise to return the result.
+Sets the enabled status of a notification slot type for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3161,27 +3145,25 @@ Sets the enabled status for a notification slot of a specified type. This API us
 
 | Name| Type                         | Mandatory| Description          |
 | ------ | ----------------------------- | ---- | -------------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.  |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.  |
 | type   | [SlotType](#slottype)         | Yes  | Notification slot type.|
 | enable | boolean                       | Yes  | Whether to enable notification.    |
 
 **Example**
 
 ```js
-//enableNotificationSlot
-Notification.enableNotificationSlot(
-    { bundle: "ohos.samples.notification", },
-    Notification.SlotType.SOCIAL_COMMUNICATION,
-    true).then(() => {
-        console.info("enableNotificationSlot sucess");
-    });
+// enableNotificationSlot
+Notification.enableNotificationSlot({ bundle: "ohos.samples.notification", },
+    Notification.SlotType.SOCIAL_COMMUNICATION,true).then(() => {
+    console.info("enableNotificationSlot success");
+});
 ```
 
 ## Notification.isNotificationSlotEnabled <sup>9+</sup>
 
 isNotificationSlotEnabled(bundle: BundleOption, type: SlotType, callback: AsyncCallback\<boolean\>): void
 
-Obtains the enabled status of the notification slot of a specified type. This API uses an asynchronous callback to return the result.
+Checks whether a specified notification slot type is enabled for a specified application. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3193,14 +3175,14 @@ Obtains the enabled status of the notification slot of a specified type. This AP
 
 | Name  | Type                         | Mandatory| Description                  |
 | -------- | ----------------------------- | ---- | ---------------------- |
-| bundle   | [BundleOption](#bundleoption) | Yes  | Bundle information.          |
+| bundle   | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.          |
 | type     | [SlotType](#slottype)         | Yes  | Notification slot type.        |
 | callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result.|
 
 **Example**
 
 ```js
-//isNotificationSlotEnabled
+// isNotificationSlotEnabled
 function getEnableSlotCallback(err, data) {
     if (err.code) {
         console.info("isNotificationSlotEnabled failed " + JSON.stringify(err));
@@ -3219,7 +3201,7 @@ Notification.isNotificationSlotEnabled(
 
 isNotificationSlotEnabled(bundle: BundleOption, type: SlotType): Promise\<boolean\>  
 
-Obtains the enabled status of the notification slot of a specified type. This API uses a promise to return the result.
+Checks whether a specified notification slot type is enabled for a specified application. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3231,25 +3213,23 @@ Obtains the enabled status of the notification slot of a specified type. This AP
 
 | Name| Type                         | Mandatory| Description          |
 | ------ | ----------------------------- | ---- | -------------- |
-| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information.  |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.  |
 | type   | [SlotType](#slottype)         | Yes  | Notification slot type.|
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
-| Promise\<boolean\> | Promise used to return the enabled status of the notification slot of the specified type.|
+| Type              | Description                           |
+| ------------------ | ------------------------------- |
+| Promise\<boolean\> | Promise used to return the result.|
 
 **Example**
 
 ```js
-//isNotificationSlotEnabled
-Notification.isNotificationSlotEnabled(
-    { bundle: "ohos.samples.notification", },
-    Notification.SlotType.SOCIAL_COMMUNICATION
-    ).then((data) => {
-      console.info("isNotificationSlotEnabled success, data: " + JSON.stringify(data));
-    });
+// isNotificationSlotEnabled
+Notification.isNotificationSlotEnabled({ bundle: "ohos.samples.notification", },
+    Notification.SlotType.SOCIAL_COMMUNICATION).then((data) => {
+    console.info("isNotificationSlotEnabled success, data: " + JSON.stringify(data));
+});
 ```
 
 
@@ -3257,7 +3237,7 @@ Notification.isNotificationSlotEnabled(
 
 setSyncNotificationEnabledWithoutApp(userId: number, enable: boolean, callback: AsyncCallback\<void\>): void
 
-Sets whether to sync notifications to devices where the application is not installed. This API uses an asynchronous callback to return the result.
+Sets whether to enable the notification sync feature for devices where the application is not installed. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3270,7 +3250,7 @@ Sets whether to sync notifications to devices where the application is not insta
 | Name| Type                         | Mandatory| Description          |
 | ------ | ----------------------------- | ---- | -------------- |
 | userId | number | Yes  | User ID.  |
-| enable | boolean | Yes  | Whether the feature is enabled.<br>**true**: enabled<br>**false**: disabled  |
+| enable | boolean | Yes  | Whether the feature is enabled.  |
 | callback | AsyncCallback\<void\>    | Yes  | Callback used to return the result.|
 
 **Example**
@@ -3279,7 +3259,7 @@ Sets whether to sync notifications to devices where the application is not insta
 let userId = 100;
 let enable = true;
 
-function setSyncNotificationEnabledWithoutAppCallback(err) {
+function callback(err) {
     if (err.code) {
         console.info("setSyncNotificationEnabledWithoutApp failed " + JSON.stringify(err));
     } else {
@@ -3287,7 +3267,7 @@ function setSyncNotificationEnabledWithoutAppCallback(err) {
     }
 }
 
-Notification.setSyncNotificationEnabledWithoutApp(userId, enable, setSyncNotificationEnabledWithoutAppCallback);
+Notification.setSyncNotificationEnabledWithoutApp(userId, enable, callback);
 ```
 
 
@@ -3295,7 +3275,7 @@ Notification.setSyncNotificationEnabledWithoutApp(userId, enable, setSyncNotific
 
 setSyncNotificationEnabledWithoutApp(userId: number, enable: boolean): Promise\<void>
 
-Sets whether to sync notifications to devices where the application is not installed. This API uses a promise to return the result.
+Sets whether to enable the notification sync feature for devices where the application is not installed. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3308,7 +3288,7 @@ Sets whether to sync notifications to devices where the application is not insta
 | Name| Type                         | Mandatory| Description          |
 | ------ | ----------------------------- | ---- | -------------- |
 | userId | number | Yes  | User ID.  |
-| enable | boolean | Yes  | Whether the feature is enabled.<br>**true**: enabled<br>**false**: disabled  |
+| enable | boolean | Yes  | Whether the feature is enabled.  |
 
 **Return value**
 
@@ -3322,13 +3302,11 @@ Sets whether to sync notifications to devices where the application is not insta
 let userId = 100;
 let enable = true;
 
-Notification.setSyncNotificationEnabledWithoutApp(userId, enable)
-    .then(() => {
-        console.info('setSyncNotificationEnabledWithoutApp');
-    })
-    .catch((err) => {
-        console.info('setSyncNotificationEnabledWithoutApp, err:', err);
-    });
+Notification.setSyncNotificationEnabledWithoutApp(userId, enable).then(() => {
+    console.info('setSyncNotificationEnabledWithoutApp success');
+}).catch((err) => {
+    console.info('setSyncNotificationEnabledWithoutApp, err:' + JSON.stringify(err));
+});
 ```
 
 
@@ -3336,7 +3314,7 @@ Notification.setSyncNotificationEnabledWithoutApp(userId, enable)
 
 getSyncNotificationEnabledWithoutApp(userId: number, callback: AsyncCallback\<boolean>): void
 
-Obtains whether notifications are synced to devices where the application is not installed. This API uses an asynchronous callback to return the result.
+Obtains whether the notification sync feature is enabled for devices where the application is not installed. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3349,18 +3327,18 @@ Obtains whether notifications are synced to devices where the application is not
 | Name| Type                         | Mandatory| Description          |
 | ------ | ----------------------------- | ---- | -------------- |
 | userId | number | Yes  | User ID.  |
-| callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result.<br>**true**: Notifications are synced to devices where the application is not installed.<br>**false**: Notifications are not synced to devices where the application is not installed.|
+| callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result.|
 
 **Example**
 
 ```js
 let userId = 100;
 
-function getSyncNotificationEnabledWithoutAppCallback(data, err) {
+function getSyncNotificationEnabledWithoutAppCallback(err, data) {
     if (err) {
-        console.info('getSyncNotificationEnabledWithoutAppCallback, err' + err);
+        console.info('getSyncNotificationEnabledWithoutAppCallback, err:' + err);
     } else {
-        console.info('getSyncNotificationEnabledWithoutAppCallback, data' + data);
+        console.info('getSyncNotificationEnabledWithoutAppCallback, data:' + data);
     }
 }
 
@@ -3372,7 +3350,7 @@ Notification.getSyncNotificationEnabledWithoutApp(userId, getSyncNotificationEna
 
 getSyncNotificationEnabledWithoutApp(userId: number): Promise\<boolean>
 
-Obtains whether notifications are synced to devices where the application is not installed. This API uses a promise to return the result.
+Obtains whether the notification sync feature is enabled for devices where the application is not installed. This API uses a promise to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3388,29 +3366,26 @@ Obtains whether notifications are synced to devices where the application is not
 
 **Return value**
 
-| Type                                                       | Description                                                        |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
-| Promise\<boolean\> | Promise used to return the result.<br>**true**: Notifications are synced to devices where the application is not installed.<br>**false**: Notifications are not synced to devices where the application is not installed.|
+| Type              | Description                                                        |
+| ------------------ | ------------------------------------------------------------ |
+| Promise\<boolean\> | Promise used to return the result.|
 
 **Example**
 
 ```js
 let userId = 100;
-
-Notification.getSyncNotificationEnabledWithoutApp(userId)
-    .then((data) => {
-        console.info('getSyncNotificationEnabledWithoutApp, data:', data);
-    })
-    .catch((err) => {
-        console.info('getSyncNotificationEnabledWithoutApp, err:', err);
-    });
+Notification.getSyncNotificationEnabledWithoutApp(userId).then((data) => {
+    console.info('getSyncNotificationEnabledWithoutApp, data:' + data);
+}).catch((err) => {
+    console.info('getSyncNotificationEnabledWithoutApp, err:' + err);
+});
 ```
 
 
 
 ## NotificationSubscriber
 
-Provides callbacks for receiving or removing notifications.
+Provides callbacks for receiving or removing notifications and serves as the input parameter of [subscribe](#notificationsubscribe).
 
 **System API**: This is a system API and cannot be called by third-party applications.
 
@@ -3428,7 +3403,7 @@ Callback for receiving notifications.
 
 | Name| Type| Mandatory| Description|
 | ------------ | ------------------------ | ---- | -------------------------- |
-| data | [SubscribeCallbackData](#subscribecallbackdata) | Yes| Notification information returned.|
+| data | [SubscribeCallbackData](#subscribecallbackdata) | Yes| Information about the notification received.|
 
 **Example**
 
@@ -3442,7 +3417,6 @@ function subscribeCallback(err) {
 };
 
 function onConsumeCallback(data) {
-    console.info('===> onConsume in test');
     let req = data.request;
     console.info('===> onConsume callback req.id:' + req.id);
 };
@@ -3458,7 +3432,7 @@ Notification.subscribe(subscriber, subscribeCallback);
 
 onCancel?:(data: [SubscribeCallbackData](#subscribecallbackdata)) => void
 
-Callback for removing notifications.
+Callback for canceling notifications.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3468,7 +3442,7 @@ Callback for removing notifications.
 
 | Name| Type| Mandatory| Description|
 | ------------ | ------------------------ | ---- | -------------------------- |
-| data | [SubscribeCallbackData](#subscribecallbackdata) | Yes| Notification information returned.|
+| data | [SubscribeCallbackData](#subscribecallbackdata) | Yes| Information about the notification to cancel.|
 
 **Example**
 
@@ -3482,7 +3456,6 @@ function subscribeCallback(err) {
 };
 
 function onCancelCallback(data) {
-    console.info('===> onCancel in test');
     let req = data.request;
     console.info('===> onCancel callback req.id:' + req.id);
 }
@@ -3508,7 +3481,7 @@ Callback for notification sorting updates.
 
 | Name| Type| Mandatory| Description|
 | ------------ | ------------------------ | ---- | -------------------------- |
-| data | [NotificationSortingMap](#notificationsortingmap) | Yes| Notification information returned.|
+| data | [NotificationSortingMap](#notificationsortingmap) | Yes| Latest notification sorting list.|
 
 **Example**
 
@@ -3521,8 +3494,8 @@ function subscribeCallback(err) {
     }
 };
 
-function onUpdateCallback() {
-    console.info('===> onUpdate in test');
+function onUpdateCallback(map) {
+    console.info('===> onUpdateCallback map:' + JSON.stringify(map));
 }
 
 var subscriber = {
@@ -3584,16 +3557,30 @@ function subscribeCallback(err) {
         console.info("subscribeCallback");
     }
 };
+function unsubscribeCallback(err) {
+    if (err.code) {
+        console.info("unsubscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("unsubscribeCallback");
+    }
+};
 
+function onConnectCallback() {
+    console.info('===> onConnect in test');
+}
 function onDisconnectCallback() {
     console.info('===> onDisconnect in test');
 }
 
 var subscriber = {
+    onConnect: onConnectCallback,
     onDisconnect: onDisconnectCallback
 };
 
+// The onConnect callback is invoked when subscription to the notification is complete.
 Notification.subscribe(subscriber, subscribeCallback);
+// The onDisconnect callback is invoked when unsubscription to the notification is complete.
+Notification.unsubscribe(subscriber, unsubscribeCallback);
 ```
 
 ### onDestroy
@@ -3654,15 +3641,24 @@ function subscribeCallback(err) {
     }
 };
 
-function onDoNotDisturbDateChangeCallback() {
-    console.info('===> onDoNotDisturbDateChange in test');
+function onDoNotDisturbDateChangeCallback(mode) {
+    console.info('===> onDoNotDisturbDateChange:' + mode);
 }
 
 var subscriber = {
     onDoNotDisturbDateChange: onDoNotDisturbDateChangeCallback
 };
-
 Notification.subscribe(subscriber, subscribeCallback);
+
+var doNotDisturbDate = {
+    type: Notification.DoNotDisturbType.TYPE_ONCE,
+    begin: new Date(),
+    end: new Date(2021, 11, 15, 18, 0)
+}
+// Set the onDoNotDisturbDateChange callback for DND time setting updates.
+Notification.setDoNotDisturbDate(doNotDisturbDate).then(() => {
+	console.info("setDoNotDisturbDate sucess");
+});
 ```
 
 
@@ -3670,7 +3666,7 @@ Notification.subscribe(subscriber, subscribeCallback);
 
 onEnabledNotificationChanged?:(callbackData: [EnabledNotificationCallbackData](#enablednotificationcallbackdata8)) => void
 
-Listens for the notification enable status changes. This API uses an asynchronous callback to return the result.
+Listens for the notification enabled status changes. This API uses an asynchronous callback to return the result.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -3694,16 +3690,23 @@ function subscribeCallback(err) {
 };
 
 function onEnabledNotificationChangedCallback(callbackData) {
-    console.info("bundle: ", callbackData.bundle);
-    console.info("uid: ", callbackData.uid);
-    console.info("enable: ", callbackData.enable);
+    console.info("bundle: " + callbackData.bundle);
+    console.info("uid: " + callbackData.uid);
+    console.info("enable: " + callbackData.enable);
 };
 
 var subscriber = {
     onEnabledNotificationChanged: onEnabledNotificationChangedCallback
 };
-
 Notification.subscribe(subscriber, subscribeCallback);
+
+var bundle = {
+    bundle: "bundleName1",
+}
+// Set the onEnabledNotificationChanged callback that is triggered when the notification enabled status changes.
+Notification.enableNotification(bundle, false).then(() => {
+	console.info("enableNotification sucess");
+});
 ```
 
 ## SubscribeCallbackData
@@ -3740,13 +3743,11 @@ Notification.subscribe(subscriber, subscribeCallback);
 
 **System API**: This is a system API and cannot be called by third-party applications.
 
-| Name | Type                                 | Readable| Writable| Description                    |
-| -----  ------------------------------------- || ---- | --- | ------------------------ |
-| type  | [DoNotDisturbType](#donotdisturbtype8) | Yes | No | DND time type.|
-| begin | Date                                  | Yes | No | DND start time.|
-| end   | Date                                  | Yes | No | DND end time.|
-
-
+| Name | Type                                  | Readable| Writable| Description                  |
+| ----- | -------------------------------------- | ---- | ---- | ---------------------- |
+| type  | [DoNotDisturbType](#donotdisturbtype8) | Yes  | Yes  | DND time type.|
+| begin | Date                                   | Yes  | Yes  | DND start time.|
+| end   | Date                                   | Yes  | Yes  | DND end time.|
 
 ## DoNotDisturbType<sup>8+</sup>
 
@@ -3793,7 +3794,7 @@ Notification.subscribe(subscriber, subscribeCallback);
 
 | Name  | Type  | Readable| Writable| Description  |
 | ------ | ------ |---- | --- |  ------ |
-| bundle | string | Yes | Yes | Bundle name.  |
+| bundle | string | Yes | Yes | Bundle information of the application.|
 | uid    | number | Yes | Yes | User ID.|
 
 
@@ -3823,14 +3824,14 @@ Notification.subscribe(subscriber, subscribeCallback);
 
 ## NotificationActionButton
 
-Enumerates the buttons in the notification.
+Describes the button displayed in the notification.
 
 **System capability**: SystemCapability.Notification.Notification
 
 | Name     | Type                                           | Readable| Writable| Description                     |
 | --------- | ----------------------------------------------- | --- | ---- | ------------------------- |
 | title     | string                                          | Yes | Yes | Button title.                 |
-| wantAgent | WantAgent                                       | Yes | Yes | **WantAgent** of the button.|
+| wantAgent | [WantAgent](js-apis-app-ability-wantAgent.md)   | Yes | Yes | **WantAgent** of the button.|
 | extras    | { [key: string]: any }                          | Yes | Yes | Extra information of the button.             |
 | userInput<sup>8+</sup> | [NotificationUserInput](#notificationuserinput8) | Yes | Yes | User input object.         |
 
@@ -3893,7 +3894,7 @@ Describes the picture-attached notification.
 | additionalText | string         | Yes | Yes | Additional information of the notification.|
 | briefText      | string         | Yes | Yes | Brief text of the notification.|
 | expandedTitle  | string         | Yes | Yes | Title of the notification in the expanded state.                |
-| picture        | image.PixelMap | Yes | Yes | Picture attached to the notification.                  |
+| picture        | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes | Yes | Picture attached to the notification.                  |
 
 
 ## NotificationContent
@@ -3934,8 +3935,8 @@ Enumerates notification flags.
 
 | Name            | Type                   | Readable| Writable| Description                              |
 | ---------------- | ---------------------- | ---- | ---- | --------------------------------- |
-| soundEnabled     | NotificationFlagStatus | Yes  | No  | Whether to enable the sound alert for the notification.                 |
-| vibrationEnabled | NotificationFlagStatus | Yes  | No  | Whether to enable vibration for the notification.              |
+| soundEnabled     | [NotificationFlagStatus](#notificationflagstatus8) | Yes  | No  | Whether to enable the sound alert for the notification.                 |
+| vibrationEnabled | [NotificationFlagStatus](#notificationflagstatus8) | Yes  | No  | Whether to enable vibration for the notification.              |
 
 
 ## NotificationRequest
@@ -3954,48 +3955,47 @@ Describes the notification request.
 | deliveryTime          | number                                        | Yes | Yes | Time when the notification is sent.              |
 | tapDismissed          | boolean                                       | Yes | Yes | Whether the notification is automatically cleared.          |
 | autoDeletedTime       | number                                        | Yes | Yes | Time when the notification is automatically cleared.            |
-| wantAgent             | WantAgent                                     | Yes | Yes | **WantAgent** instance to which the notification will be redirected after being clicked. |
+| wantAgent             | [WantAgent](js-apis-app-ability-wantAgent.md) | Yes | Yes | **WantAgent** instance to which the notification will be redirected after being clicked. |
 | extraInfo             | {[key: string]: any}                          | Yes | Yes | Extended parameters.                  |
-| color                 | number                                        | Yes | Yes | Background color of the notification. Not supported currently.      |
-| colorEnabled          | boolean                                       | Yes | Yes | Whether the notification background color is enabled. Not supported currently. |
+| color                 | number                                        | Yes | Yes | Background color of the notification. Not supported currently.|
+| colorEnabled          | boolean                                       | Yes | Yes | Whether the notification background color is enabled. Not supported currently.|
 | isAlertOnce           | boolean                                       | Yes | Yes | Whether the notification triggers an alert only once.|
 | isStopwatch           | boolean                                       | Yes | Yes | Whether to display the stopwatch.          |
 | isCountDown           | boolean                                       | Yes | Yes | Whether to display the countdown time.        |
-| isFloatingIcon        | boolean                                       | Yes | Yes | Whether the notification is displayed as a floating icon.        |
+| isFloatingIcon        | boolean                                       | Yes | Yes | Whether the notification is displayed as a floating icon in the status bar.        |
 | label                 | string                                        | Yes | Yes | Notification label.                  |
 | badgeIconStyle        | number                                        | Yes | Yes | Notification badge type.              |
 | showDeliveryTime      | boolean                                       | Yes | Yes | Whether to display the time when the notification is delivered.          |
 | actionButtons         | Array\<[NotificationActionButton](#notificationactionbutton)\>             | Yes | Yes | Buttons in the notification. Up to two buttons are allowed.    |
-| smallIcon             | PixelMap                                      | Yes | Yes | Small notification icon.                |
-| largeIcon             | PixelMap                                      | Yes | Yes | Large notification icon.                |
+| smallIcon             | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes | Yes | Small notification icon. This field is optional, and the icon size cannot exceed 30 KB.|
+| largeIcon             | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes | Yes | Large notification icon. This field is optional, and the icon size cannot exceed 30 KB.|
 | creatorBundleName     | string                                        | Yes | No | Name of the bundle that creates the notification.            |
 | creatorUid            | number                                        | Yes | No | UID used for creating the notification.             |
 | creatorPid            | number                                        | Yes | No | PID used for creating the notification.             |
 | creatorUserId<sup>8+</sup>| number                                    | Yes | No | ID of the user who creates the notification.          |
 | hashCode              | string                                        | Yes | No | Unique ID of the notification.              |
 | classification        | string                                        | Yes | Yes | Notification category.<br>**System API**: This is a system API and cannot be called by third-party applications.                  |
-| groupName<sup>8+</sup>| string                                        | Yes | Yes | Group notification name.                |
+| groupName<sup>8+</sup>| string                                        | Yes | Yes | Notification group name.                |
 | template<sup>8+</sup> | [NotificationTemplate](#notificationtemplate8) | Yes | Yes | Notification template.                  |
 | isRemoveAllowed<sup>8+</sup> | boolean                                | Yes | No | Whether the notification can be removed.<br>**System API**: This is a system API and cannot be called by third-party applications.                  |
 | source<sup>8+</sup>   | number                                        | Yes | No | Notification source.<br>**System API**: This is a system API and cannot be called by third-party applications.                  |
-| distributedOption<sup>8+</sup>   | [DistributedOptions](#distributedoptions8)                 | Yes | Yes | Option of distributed notification.         |
+| distributedOption<sup>8+</sup>   | [DistributedOptions](#distributedoptions8)                 | Yes | Yes | Distributed notification options.         |
 | deviceId<sup>8+</sup> | string                                        | Yes | No | Device ID of the notification source.<br>**System API**: This is a system API and cannot be called by third-party applications.         |
 | notificationFlags<sup>8+</sup> | [NotificationFlags](#notificationflags8)                    | Yes | No | Notification flags.         |
-| removalWantAgent<sup>9+</sup> | WantAgent                    | Yes | Yes | **WantAgent** instance to which the notification will be redirected when it is removed.         |
+| removalWantAgent<sup>9+</sup> | [WantAgent](js-apis-app-ability-wantAgent.md) | Yes | Yes | **WantAgent** instance to which the notification will be redirected when it is removed.         |
 | badgeNumber<sup>9+</sup> | number                    | Yes | Yes | Number of notifications displayed on the application icon.         |
 
-
 ## DistributedOptions<sup>8+</sup>
 
-Describes distributed options.
+Describes distributed notifications options.
 
 **System capability**: SystemCapability.Notification.Notification
 
 | Name                  | Type           | Readable| Writable| Description                              |
 | ---------------------- | -------------- | ---- | ---- | ---------------------------------- |
 | isDistributed          | boolean        | Yes  | Yes  | Whether the notification is a distributed notification.                 |
-| supportDisplayDevices  | Array\<string> | Yes  | Yes  | Types of the devices to which the notification can be synchronized.          |
-| supportOperateDevices  | Array\<string> | Yes  | Yes  | Devices on which notification can be enabled.               |
+| supportDisplayDevices  | Array\<string> | Yes  | Yes  | List of the devices to which the notification can be synchronized.        |
+| supportOperateDevices  | Array\<string> | Yes  | Yes  | List of the devices on which the notification can be opened.             |
 | remindType             | number         | Yes  | No  | Notification reminder type.<br>**System API**: This is a system API and cannot be called by third-party applications.                   |
 
 
@@ -4011,14 +4011,14 @@ Describes the notification slot.
 | level                | number                | Yes | Yes | Notification level. If this parameter is not set, the default value is used based on the notification slot type.|
 | desc                 | string                | Yes | Yes | Notification slot description.                          |
 | badgeFlag            | boolean               | Yes | Yes | Whether to display the badge.                              |
-| bypassDnd            | boolean               | Yes | Yes | Whether to bypass the DND mode in the system.              |
+| bypassDnd            | boolean               | Yes | Yes | Whether to bypass DND mode in the system.              |
 | lockscreenVisibility | number                | Yes | Yes | Mode for displaying the notification on the lock screen.                |
-| vibrationEnabled     | boolean               | Yes | Yes | Whether vibration is supported for the notification.                                |
+| vibrationEnabled     | boolean               | Yes | Yes | Whether vibration is enabled for the notification.                                |
 | sound                | string                | Yes | Yes | Notification alert tone.                                |
 | lightEnabled         | boolean               | Yes | Yes | Whether the indicator blinks for the notification.                                  |
 | lightColor           | number                | Yes | Yes | Indicator color of the notification.                                |
 | vibrationValues      | Array\<number\>       | Yes | Yes | Vibration mode of the notification.                              |
-| enabled<sup>9+</sup> | boolean               | Yes | No | Enabled status of the notification slot.                     |
+| enabled<sup>9+</sup> | boolean               | Yes | No | Whether the notification slot is enabled.                     |
 
 
 ## NotificationSorting
@@ -4066,7 +4066,7 @@ Provides the information about the publisher for notification subscription.
 
 ## NotificationTemplate<sup>8+</sup>
 
-Notification template.
+Describes the notification template.
 
 **System capability**: SystemCapability.Notification.Notification
 
@@ -4121,5 +4121,5 @@ Provides the notification user input.
 
 | Name                | Value | Description                 |
 | -------------------- | --- | -------------------- |
-| CLICK_REASON_REMOVE  | 1   | The notification is removed due to a click on it.   |
+| CLICK_REASON_REMOVE  | 1   | The notification is removed after a click on it.   |
 | CANCEL_REASON_REMOVE | 2   | The notification is removed by the user.        |
diff --git a/en/application-dev/reference/apis/js-apis-notificationManager.md b/en/application-dev/reference/apis/js-apis-notificationManager.md
new file mode 100644
index 0000000000000000000000000000000000000000..2d8f497bede97cc9c6d1a8d408b6e80770a2396f
--- /dev/null
+++ b/en/application-dev/reference/apis/js-apis-notificationManager.md
@@ -0,0 +1,3968 @@
+# @ohos.notificationManager
+
+The **notificationManager** module provides notification management capabilities, covering notifications, notification slots, notification enabled status, and notification badge status.
+
+> **NOTE**
+>
+> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+
+## Modules to Import
+
+```js
+import Notification from '@ohos.notificationManager';
+```
+
+## Notification.publish
+
+publish(request: NotificationRequest, callback: AsyncCallback\<void\>): void
+
+Publishes a notification. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                                       | Mandatory| Description                                       |
+| -------- | ------------------------------------------- | ---- | ------------------------------------------- |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                       |
+
+**Error codes**
+
+| ID| Error Message                                 |
+| -------- | ----------------------------------------- |
+| 1600001  | Internal error.                           |
+| 1600002  | Marshalling or unmarshalling error.       |
+| 1600003  | Failed to connect service.                |
+| 1600004  | Notification is not enabled.              |
+| 1600005  | Notification slot is not enabled.         |
+| 1600009  | Over max number notifications per second. |
+
+**Example**
+
+```js
+// publish callback
+function publishCallback(err) {
+    if (err) {
+        console.info("publish failed " + JSON.stringify(err));
+    } else {
+        console.info("publish success");
+    }
+}
+// NotificationRequest object
+var notificationRequest = {
+    id: 1,
+    content: {
+        contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
+        normal: {
+            title: "test_title",
+            text: "test_text",
+            additionalText: "test_additionalText"
+        }
+    }
+}
+Notification.publish(notificationRequest, publishCallback)
+```
+
+
+
+## Notification.publish
+
+publish(request: NotificationRequest): Promise\<void\>
+
+Publishes a notification. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                                       | Mandatory| Description                                       |
+| -------- | ------------------------------------------- | ---- | ------------------------------------------- |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+
+**Error codes**
+
+| ID| Error Message                                 |
+| -------- | ----------------------------------------- |
+| 1600001  | Internal error.                           |
+| 1600002  | Marshalling or unmarshalling error.       |
+| 1600003  | Failed to connect service.                |
+| 1600004  | Notification is not enabled.              |
+| 1600005  | Notification slot is not enabled.         |
+| 1600009  | Over max number notifications per second. |
+
+**Example**
+
+```js
+// NotificationRequest object
+var notificationRequest = {
+    notificationId: 1,
+    content: {
+        contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
+        normal: {
+            title: "test_title",
+            text: "test_text",
+            additionalText: "test_additionalText"
+        }
+    }
+}
+Notification.publish(notificationRequest).then(() => {
+	console.info("publish success");
+});
+
+```
+
+## Notification.publish
+
+publish(request: NotificationRequest, userId: number, callback: AsyncCallback\<void\>): void
+
+Publishes a notification to a specified user. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                                       | Mandatory| Description                                       |
+| -------- | ----------------------------------------- | ---- | ------------------------------------------- |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| userId   | number                                      | Yes  | User ID.                          |
+| callback | AsyncCallback\<void\>                       | Yes  | Callback used to return the result.                          |
+
+**Error codes**
+
+| ID| Error Message                                 |
+| -------- | ----------------------------------------- |
+| 1600001  | Internal error.                           |
+| 1600002  | Marshalling or unmarshalling error.       |
+| 1600003  | Failed to connect service.                |
+| 1600004  | Notification is not enabled.              |
+| 1600005  | Notification slot is not enabled.         |
+| 1600008  | The user is not exist.                    |
+| 1600009  | Over max number notifications per second. |
+
+**Example**
+
+```js
+// publish callback
+function publishCallback(err) {
+    if (err) {
+        console.info("publish failed " + JSON.stringify(err));
+    } else {
+        console.info("publish success");
+    }
+}
+// User ID
+var userId = 1
+// NotificationRequest object
+var notificationRequest = {
+    id: 1,
+    content: {
+        contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
+        normal: {
+            title: "test_title",
+            text: "test_text",
+            additionalText: "test_additionalText"
+        }
+    }
+}
+Notification.publish(notificationRequest, userId, publishCallback);
+```
+
+## Notification.publish
+
+publish(request: NotificationRequest, userId: number): Promise\<void\>
+
+Publishes a notification to a specified user. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    |  Type                                       | Mandatory| Description                                       |
+| -------- | ----------------------------------------- | ---- | ------------------------------------------- |
+| request  | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| userId   | number                                      | Yes  | User ID.                          |
+
+**Error codes**
+
+| ID| Error Message                                 |
+| -------- | ----------------------------------------- |
+| 1600001  | Internal error.                           |
+| 1600002  | Marshalling or unmarshalling error.       |
+| 1600003  | Failed to connect service.                |
+| 1600004  | Notification is not enabled.              |
+| 1600005  | Notification slot is not enabled.         |
+| 1600008  | The user is not exist.                    |
+| 1600009  | Over max number notifications per second. |
+
+**Example**
+
+```js
+var notificationRequest = {
+    notificationId: 1,
+    content: {
+        contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
+        normal: {
+            title: "test_title",
+            text: "test_text",
+            additionalText: "test_additionalText"
+        }
+    }
+}
+
+var userId = 1
+
+Notification.publish(notificationRequest, userId).then(() => {
+	console.info("publish success");
+});
+```
+
+
+## Notification.cancel
+
+cancel(id: number, label: string, callback: AsyncCallback\<void\>): void
+
+Cancels a notification with the specified ID and label. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| id       | number                | Yes  | Notification ID.              |
+| label    | string                | Yes  | Notification label.            |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+
+**Example**
+
+```js
+// cancel callback
+function cancelCallback(err) {
+    if (err) {
+        console.info("cancel failed " + JSON.stringify(err));
+    } else {
+        console.info("cancel success");
+    }
+}
+Notification.cancel(0, "label", cancelCallback)
+```
+
+
+
+## Notification.cancel
+
+cancel(id: number, label?: string): Promise\<void\>
+
+Cancels a notification with the specified ID and optional label. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name | Type  | Mandatory| Description    |
+| ----- | ------ | ---- | -------- |
+| id    | number | Yes  | Notification ID.  |
+| label | string | No  | Notification label.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+
+**Example**
+
+```js
+Notification.cancel(0).then(() => {
+	console.info("cancel success");
+});
+```
+
+
+
+## Notification.cancel
+
+cancel(id: number, callback: AsyncCallback\<void\>): void
+
+Cancels a notification with the specified ID. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| id       | number                | Yes  | Notification ID.              |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+
+**Example**
+
+```js
+// cancel callback
+function cancelCallback(err) {
+    if (err) {
+        console.info("cancel failed " + JSON.stringify(err));
+    } else {
+        console.info("cancel success");
+    }
+}
+Notification.cancel(0, cancelCallback)
+```
+
+
+
+## Notification.cancelAll
+
+cancelAll(callback: AsyncCallback\<void\>): void
+
+Cancels all notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Example**
+
+```js
+// cancel callback
+function cancelAllCallback(err) {
+    if (err) {
+        console.info("cancelAll failed " + JSON.stringify(err));
+    } else {
+        console.info("cancelAll success");
+    }
+}
+Notification.cancelAll(cancelAllCallback)
+```
+
+
+
+## Notification.cancelAll
+
+cancelAll(): Promise\<void\>
+
+Cancels all notifications. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.cancelAll().then(() => {
+	console.info("cancelAll success");
+});
+```
+
+
+
+## Notification.addSlot
+
+addSlot(slot: NotificationSlot, callback: AsyncCallback\<void\>): void
+
+Adds a notification slot. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| slot     | [NotificationSlot](#notificationslot)       | Yes  | Notification slot to add.|
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// addSlot callback
+function addSlotCallBack(err) {
+    if (err) {
+        console.info("addSlot failed " + JSON.stringify(err));
+    } else {
+        console.info("addSlot success");
+    }
+}
+// NotificationSlot object
+var notificationSlot = {
+    type: Notification.SlotType.SOCIAL_COMMUNICATION
+}
+Notification.addSlot(notificationSlot, addSlotCallBack)
+```
+
+
+
+## Notification.addSlot
+
+addSlot(slot: NotificationSlot): Promise\<void\>
+
+Adds a notification slot. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type            | Mandatory| Description                |
+| ---- | ---------------- | ---- | -------------------- |
+| slot | [NotificationSlot](#notificationslot) | Yes  | Notification slot to add.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// NotificationSlot object
+var notificationSlot = {
+    type: Notification.SlotType.SOCIAL_COMMUNICATION
+}
+Notification.addSlot(notificationSlot).then(() => {
+	console.info("addSlot success");
+});
+```
+
+
+
+## Notification.addSlot
+
+addSlot(type: SlotType, callback: AsyncCallback\<void\>): void
+
+Adds a notification slot of a specified type. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                  |
+| -------- | --------------------- | ---- | ---------------------- |
+| type     | [SlotType](#slottype)              | Yes  | Type of the notification slot to add.|
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.  |
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// addSlot callback
+function addSlotCallBack(err) {
+    if (err) {
+        console.info("addSlot failed " + JSON.stringify(err));
+    } else {
+        console.info("addSlot success");
+    }
+}
+Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION, addSlotCallBack)
+```
+
+
+
+## Notification.addSlot
+
+addSlot(type: SlotType): Promise\<void\>
+
+Adds a notification slot of a specified type. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name| Type    | Mandatory| Description                  |
+| ---- | -------- | ---- | ---------------------- |
+| type | [SlotType](#slottype) | Yes  | Type of the notification slot to add.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.addSlot(Notification.SlotType.SOCIAL_COMMUNICATION).then(() => {
+	console.info("addSlot success");
+});
+```
+
+
+
+## Notification.addSlots
+
+addSlots(slots: Array\<NotificationSlot\>, callback: AsyncCallback\<void\>): void
+
+Adds an array of notification slots. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                     | Mandatory| Description                    |
+| -------- | ------------------------- | ---- | ------------------------ |
+| slots    | Array\<[NotificationSlot](#notificationslot)\> | Yes  | Notification slots to add.|
+| callback | AsyncCallback\<void\>     | Yes  | Callback used to return the result.    |
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// addSlots callback
+function addSlotsCallBack(err) {
+    if (err) {
+        console.info("addSlots failed " + JSON.stringify(err));
+    } else {
+        console.info("addSlots success");
+    }
+}
+// NotificationSlot object
+var notificationSlot = {
+    type: Notification.SlotType.SOCIAL_COMMUNICATION
+}
+// NotificationSlotArray object
+var notificationSlotArray = new Array();
+notificationSlotArray[0] = notificationSlot;
+
+Notification.addSlots(notificationSlotArray, addSlotsCallBack)
+```
+
+
+
+## Notification.addSlots
+
+addSlots(slots: Array\<NotificationSlot\>): Promise\<void\>
+
+Adds an array of notification slots. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name | Type                     | Mandatory| Description                    |
+| ----- | ------------------------- | ---- | ------------------------ |
+| slots | Array\<[NotificationSlot](#notificationslot)\> | Yes  | Notification slots to add.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// NotificationSlot object
+var notificationSlot = {
+    type: Notification.SlotType.SOCIAL_COMMUNICATION
+}
+// NotificationSlotArray object
+var notificationSlotArray = new Array();
+notificationSlotArray[0] = notificationSlot;
+
+Notification.addSlots(notificationSlotArray).then(() => {
+	console.info("addSlots success");
+});
+```
+
+
+
+## Notification.getSlot
+
+getSlot(slotType: SlotType, callback: AsyncCallback\<NotificationSlot\>): void
+
+Obtains a notification slot of a specified type. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                             | Mandatory| Description                                                       |
+| -------- | --------------------------------- | ---- | ----------------------------------------------------------- |
+| slotType | [SlotType](#slottype)                          | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|
+| callback | AsyncCallback\<[NotificationSlot](#notificationslot)\> | Yes  | Callback used to return the result.                                       |
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// getSlot callback
+function getSlotCallback(err,data) {
+    if (err) {
+        console.info("getSlot failed " + JSON.stringify(err));
+    } else {
+        console.info("getSlot success");
+    }
+}
+var slotType = Notification.SlotType.SOCIAL_COMMUNICATION;
+Notification.getSlot(slotType, getSlotCallback)
+```
+
+
+
+## Notification.getSlot
+
+getSlot(slotType: SlotType): Promise\<NotificationSlot\>
+
+Obtains a notification slot of a specified type. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type    | Mandatory| Description                                                       |
+| -------- | -------- | ---- | ----------------------------------------------------------- |
+| slotType | [SlotType](#slottype) | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<NotificationSlot\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+var slotType = Notification.SlotType.SOCIAL_COMMUNICATION;
+Notification.getSlot(slotType).then((data) => {
+	console.info("getSlot success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.getSlots
+
+getSlots(callback: AsyncCallback<Array\<NotificationSlot\>>): void
+
+Obtains all notification slots of this application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                             | Mandatory| Description                |
+| -------- | --------------------------------- | ---- | -------------------- |
+| callback | AsyncCallback\<Array\<[NotificationSlot](#notificationslot)\>\> | Yes  | Callback used to return all notification slots of the current application.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// getSlots callback
+function getSlotsCallback(err,data) {
+    if (err) {
+        console.info("getSlots failed " + JSON.stringify(err));
+    } else {
+        console.info("getSlots success");
+    }
+}
+Notification.getSlots(getSlotsCallback)
+```
+
+
+
+## Notification.getSlots
+
+getSlots(): Promise\<Array\<NotificationSlot\>>
+
+Obtains all notification slots of this application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<Array\<[NotificationSlot](#notificationslot)\>\> | Promise used to return all notification slots of the current application.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.getSlots().then((data) => {
+	console.info("getSlots success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.removeSlot
+
+removeSlot(slotType: SlotType, callback: AsyncCallback\<void\>): void
+
+Removes a notification slot of a specified type. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                                                       |
+| -------- | --------------------- | ---- | ----------------------------------------------------------- |
+| slotType | [SlotType](#slottype)              | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.                                       |
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// removeSlot callback
+function removeSlotCallback(err) {
+    if (err) {
+        console.info("removeSlot failed " + JSON.stringify(err));
+    } else {
+        console.info("removeSlot success");
+    }
+}
+var slotType = Notification.SlotType.SOCIAL_COMMUNICATION;
+Notification.removeSlot(slotType,removeSlotCallback)
+```
+
+
+
+## Notification.removeSlot
+
+removeSlot(slotType: SlotType): Promise\<void\>
+
+Removes a notification slot of a specified type. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type    | Mandatory| Description                                                       |
+| -------- | -------- | ---- | ----------------------------------------------------------- |
+| slotType | [SlotType](#slottype) | Yes  | Type of the notification slot, which can be used for social communication, service information, content consultation, and other purposes.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+var slotType = Notification.SlotType.SOCIAL_COMMUNICATION;
+Notification.removeSlot(slotType).then(() => {
+	console.info("removeSlot success");
+});
+```
+
+
+
+## Notification.removeAllSlots
+
+removeAllSlots(callback: AsyncCallback\<void\>): void
+
+Removes all notification slots. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function removeAllCallBack(err) {
+    if (err) {
+        console.info("removeAllSlots failed " + JSON.stringify(err));
+    } else {
+        console.info("removeAllSlots success");
+    }
+}
+Notification.removeAllSlots(removeAllCallBack)
+```
+
+
+
+## Notification.removeAllSlots
+
+removeAllSlots(): Promise\<void\>
+
+Removes all notification slots. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.removeAllSlots().then(() => {
+	console.info("removeAllSlots success");
+});
+```
+
+
+
+## Notification.setNotificationEnable
+
+setNotificationEnable(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void\>): void
+
+Sets whether to enable notification for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle of the application.       |
+| enable   | boolean               | Yes  | Whether to enable notification.            |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function setNotificationEnablenCallback(err) {
+    if (err) {
+        console.info("setNotificationEnablenCallback failed " + JSON.stringify(err));
+    } else {
+        console.info("setNotificationEnablenCallback success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.setNotificationEnable(bundle, false, setNotificationEnablenCallback);
+```
+
+
+
+## Notification.setNotificationEnable
+
+setNotificationEnable(bundle: BundleOption, enable: boolean): Promise\<void\>
+
+Sets whether to enable notification for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+| enable | boolean      | Yes  | Whether to enable notification.  |
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.setNotificationEnable(bundle, false).then(() => {
+	console.info("setNotificationEnable success");
+});
+```
+
+
+
+## Notification.isNotificationEnabled
+
+isNotificationEnabled(bundle: BundleOption, callback: AsyncCallback\<boolean\>): void
+
+Checks whether notification is enabled for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                    |
+| -------- | --------------------- | ---- | ------------------------ |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle of the application.           |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function isNotificationEnabledCallback(err, data) {
+    if (err) {
+        console.info("isNotificationEnabled failed " + JSON.stringify(err));
+    } else {
+        console.info("isNotificationEnabled success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.isNotificationEnabled(bundle, isNotificationEnabledCallback);
+```
+
+
+
+## Notification.isNotificationEnabled
+
+isNotificationEnabled(bundle: BundleOption): Promise\<boolean\>
+
+Checks whether notification is enabled for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+
+**Return value**
+
+| Type              | Description                                               |
+| ------------------ | --------------------------------------------------- |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.isNotificationEnabled(bundle).then((data) => {
+	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.isNotificationEnabled
+
+isNotificationEnabled(callback: AsyncCallback\<boolean\>): void
+
+Checks whether notification is enabled for this application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                    |
+| -------- | --------------------- | ---- | ------------------------ |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function isNotificationEnabledCallback(err, data) {
+    if (err) {
+        console.info("isNotificationEnabled failed " + JSON.stringify(err));
+    } else {
+        console.info("isNotificationEnabled success");
+    }
+}
+
+Notification.isNotificationEnabled(isNotificationEnabledCallback);
+```
+
+
+
+## Notification.isNotificationEnabled
+
+isNotificationEnabled(): Promise\<boolean\>
+
+Checks whether notification is enabled for the current application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+Notification.isNotificationEnabled().then((data) => {
+	console.info("isNotificationEnabled success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.displayBadge
+
+displayBadge(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void\>): void
+
+Sets whether to enable the notification badge for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle of the application.          |
+| enable   | boolean               | Yes  | Whether to enable notification.            |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function displayBadgeCallback(err) {
+    if (err) {
+        console.info("displayBadge failed " + JSON.stringify(err));
+    } else {
+        console.info("displayBadge success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.displayBadge(bundle, false, displayBadgeCallback);
+```
+
+
+
+## Notification.displayBadge
+
+displayBadge(bundle: BundleOption, enable: boolean): Promise\<void\>
+
+Sets whether to enable the notification badge for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+| enable | boolean      | Yes  | Whether to enable notification.  |
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.displayBadge(bundle, false).then(() => {
+	console.info("displayBadge success");
+});
+```
+
+
+
+## Notification.isBadgeDisplayed
+
+isBadgeDisplayed(bundle: BundleOption, callback: AsyncCallback\<boolean\>): void
+
+Checks whether the notification badge is enabled for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                    |
+| -------- | --------------------- | ---- | ------------------------ |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle of the application.              |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function isBadgeDisplayedCallback(err, data) {
+    if (err) {
+        console.info("isBadgeDisplayed failed " + JSON.stringify(err));
+    } else {
+        console.info("isBadgeDisplayed success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.isBadgeDisplayed(bundle, isBadgeDisplayedCallback);
+```
+
+
+
+## Notification.isBadgeDisplayed
+
+isBadgeDisplayed(bundle: BundleOption): Promise\<boolean\>
+
+Checks whether the notification badge is enabled for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.isBadgeDisplayed(bundle).then((data) => {
+	console.info("isBadgeDisplayed success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.setSlotByBundle
+
+setSlotByBundle(bundle: BundleOption, slot: NotificationSlot, callback: AsyncCallback\<void\>): void
+
+Sets the notification slot for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle of the application.          |
+| slot     | [NotificationSlot](#notificationslot)      | Yes  | Notification slot.            |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+
+
+**Example**
+
+```js
+function setSlotByBundleCallback(err) {
+    if (err) {
+        console.info("setSlotByBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("setSlotByBundle success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+var notificationSlot = {
+    type: Notification.SlotType.SOCIAL_COMMUNICATION
+}
+Notification.setSlotByBundle(bundle, notificationSlot, setSlotByBundleCallback);
+```
+
+
+
+## Notification.setSlotByBundle
+
+setSlotByBundle(bundle: BundleOption, slot: NotificationSlot): Promise\<void\>
+
+Sets the notification slot for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+| slot   | [NotificationSlot](#notificationslot) | Yes  | Notification slot.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+var notificationSlot = {
+    type: Notification.SlotType.SOCIAL_COMMUNICATION
+}
+Notification.setSlotByBundle(bundle, notificationSlot).then(() => {
+	console.info("setSlotByBundle success");
+});
+```
+
+
+
+## Notification.getSlotsByBundle
+
+getSlotsByBundle(bundle: BundleOption, callback: AsyncCallback<Array\<NotificationSlot\>>): void
+
+Obtains the notification slots of a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                                    | Mandatory| Description                |
+| -------- | ---------------------------------------- | ---- | -------------------- |
+| bundle   | [BundleOption](#bundleoption)                             | Yes  | Bundle of the application.          |
+| callback | AsyncCallback<Array\<[NotificationSlot](#notificationslot)\>> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function getSlotsByBundleCallback(err, data) {
+    if (err) {
+        console.info("getSlotsByBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("getSlotsByBundle success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.getSlotsByBundle(bundle, getSlotsByBundleCallback);
+```
+
+
+
+## Notification.getSlotsByBundle
+
+getSlotsByBundle(bundle: BundleOption): Promise<Array\<NotificationSlot\>>
+
+Obtains the notification slots of a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise<Array\<[NotificationSlot](#notificationslot)\>> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.getSlotsByBundle(bundle).then((data) => {
+	console.info("getSlotsByBundle success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.getSlotNumByBundle
+
+getSlotNumByBundle(bundle: BundleOption, callback: AsyncCallback\<number\>): void
+
+Obtains the number of notification slots of a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                     | Mandatory| Description                  |
+| -------- | ------------------------- | ---- | ---------------------- |
+| bundle   | [BundleOption](#bundleoption)              | Yes  | Bundle of the application.            |
+| callback | AsyncCallback\<number\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function getSlotNumByBundleCallback(err, data) {
+    if (err) {
+        console.info("getSlotNumByBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("getSlotNumByBundle success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.getSlotNumByBundle(bundle, getSlotNumByBundleCallback);
+```
+
+
+
+## Notification.getSlotNumByBundle
+
+getSlotNumByBundle(bundle: BundleOption): Promise\<number\>
+
+Obtains the number of notification slots of a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle of the application.|
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<number\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+Notification.getSlotNumByBundle(bundle).then((data) => {
+	console.info("getSlotNumByBundle success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+
+## Notification.getAllActiveNotifications
+
+getAllActiveNotifications(callback: AsyncCallback<Array\<NotificationRequest\>>): void
+
+Obtains all active notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                                                        | Mandatory| Description                |
+| -------- | ------------------------------------------------------------ | ---- | -------------------- |
+| callback | AsyncCallback<Array\<[NotificationRequest](#notificationrequest)\>> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function getAllActiveNotificationsCallback(err, data) {
+    if (err) {
+        console.info("getAllActiveNotifications failed " + JSON.stringify(err));
+    } else {
+        console.info("getAllActiveNotifications success");
+    }
+}
+
+Notification.getAllActiveNotifications(getAllActiveNotificationsCallback);
+```
+
+
+
+## Notification.getAllActiveNotifications
+
+getAllActiveNotifications(): Promise\<Array\<[NotificationRequest](#notificationrequest)\>\>
+
+Obtains all active notifications. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<Array\<[NotificationRequest](#notificationrequest)\>\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.getAllActiveNotifications().then((data) => {
+	console.info("getAllActiveNotifications success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.getActiveNotificationCount
+
+getActiveNotificationCount(callback: AsyncCallback\<number\>): void
+
+Obtains the number of active notifications of this application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                  | Mandatory| Description                  |
+| -------- | ---------------------- | ---- | ---------------------- |
+| callback | AsyncCallback\<number\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function getActiveNotificationCountCallback(err, data) {
+    if (err) {
+        console.info("getActiveNotificationCount failed " + JSON.stringify(err));
+    } else {
+        console.info("getActiveNotificationCount success");
+    }
+}
+
+Notification.getActiveNotificationCount(getActiveNotificationCountCallback);
+```
+
+
+
+## Notification.getActiveNotificationCount
+
+getActiveNotificationCount(): Promise\<number\>
+
+Obtains the number of active notifications of this application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Return value**
+
+| Type             | Description                                       |
+| ----------------- | ------------------------------------------- |
+| Promise\<number\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.getActiveNotificationCount().then((data) => {
+	console.info("getActiveNotificationCount success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.getActiveNotifications
+
+getActiveNotifications(callback: AsyncCallback<Array\<NotificationRequest\>>): void
+
+Obtains active notifications of this application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name    | Type                                                        | Mandatory| Description                          |
+| -------- | ------------------------------------------------------------ | ---- | ------------------------------ |
+| callback | AsyncCallback<Array\<[NotificationRequest](#notificationrequest)\>> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function getActiveNotificationsCallback(err, data) {
+    if (err) {
+        console.info("getActiveNotifications failed " + JSON.stringify(err));
+    } else {
+        console.info("getActiveNotifications success");
+    }
+}
+
+Notification.getActiveNotifications(getActiveNotificationsCallback);
+```
+
+
+
+## Notification.getActiveNotifications
+
+getActiveNotifications(): Promise\<Array\<[NotificationRequest](#notificationrequest)\>\>
+
+Obtains active notifications of this application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Return value**
+
+| Type                                                        | Description                                   |
+| ------------------------------------------------------------ | --------------------------------------- |
+| Promise\<Array\<[NotificationRequest](#notificationrequest)\>\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.getActiveNotifications().then((data) => {
+	console.info("removeGroupByBundle success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.cancelGroup
+
+cancelGroup(groupName: string, callback: AsyncCallback\<void\>): void
+
+Cancels notifications under a notification group of this application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name     | Type                 | Mandatory| Description                        |
+| --------- | --------------------- | ---- | ---------------------------- |
+| groupName | string                | Yes  | Name of the notification group, which is specified through [NotificationRequest](#notificationrequest) when the notification is published.|
+| callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function cancelGroupCallback(err) {
+    if (err) {
+        console.info("cancelGroup failed " + JSON.stringify(err));
+    } else {
+        console.info("cancelGroup success");
+    }
+}
+
+var groupName = "GroupName";
+
+Notification.cancelGroup(groupName, cancelGroupCallback);
+```
+
+
+
+## Notification.cancelGroup
+
+cancelGroup(groupName: string): Promise\<void\>
+
+Cancels notifications under a notification group of this application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name     | Type  | Mandatory| Description          |
+| --------- | ------ | ---- | -------------- |
+| groupName | string | Yes  | Name of the notification group.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+var groupName = "GroupName";
+Notification.cancelGroup(groupName).then(() => {
+	console.info("cancelGroup success");
+});
+```
+
+
+
+## Notification.removeGroupByBundle
+
+removeGroupByBundle(bundle: BundleOption, groupName: string, callback: AsyncCallback\<void\>): void
+
+Removes notifications under a notification group of a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name     | Type                 | Mandatory| Description                        |
+| --------- | --------------------- | ---- | ---------------------------- |
+| bundle    | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.                  |
+| groupName | string                | Yes  | Name of the notification group.              |
+| callback  | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function removeGroupByBundleCallback(err) {
+    if (err) {
+        console.info("removeGroupByBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("removeGroupByBundle success");
+    }
+}
+
+var bundleOption = {bundle: "Bundle"};
+var groupName = "GroupName";
+
+Notification.removeGroupByBundle(bundleOption, groupName, removeGroupByBundleCallback);
+```
+
+
+
+## Notification.removeGroupByBundle
+
+removeGroupByBundle(bundle: BundleOption, groupName: string): Promise\<void\>
+
+Removes notifications under a notification group of a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name     | Type        | Mandatory| Description          |
+| --------- | ------------ | ---- | -------------- |
+| bundle    | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.    |
+| groupName | string       | Yes  | Name of the notification group.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundleOption = {bundle: "Bundle"};
+var groupName = "GroupName";
+Notification.removeGroupByBundle(bundleOption, groupName).then(() => {
+	console.info("removeGroupByBundle success");
+});
+```
+
+
+
+## Notification.setDoNotDisturbDate
+
+setDoNotDisturbDate(date: DoNotDisturbDate, callback: AsyncCallback\<void\>): void
+
+Sets the DND time. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                  |
+| -------- | --------------------- | ---- | ---------------------- |
+| date     | [DoNotDisturbDate](#donotdisturbdate)      | Yes  | DND time to set.        |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function setDoNotDisturbDateCallback(err) {
+    if (err) {
+        console.info("setDoNotDisturbDate failed " + JSON.stringify(err));
+    } else {
+        console.info("setDoNotDisturbDate success");
+    }
+}
+
+var doNotDisturbDate = {
+    type: Notification.DoNotDisturbType.TYPE_ONCE,
+    begin: new Date(),
+    end: new Date(2021, 11, 15, 18, 0)
+}
+
+Notification.setDoNotDisturbDate(doNotDisturbDate, setDoNotDisturbDateCallback);
+```
+
+
+
+## Notification.setDoNotDisturbDate
+
+setDoNotDisturbDate(date: DoNotDisturbDate): Promise\<void\>
+
+Sets the DND time. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type            | Mandatory| Description          |
+| ---- | ---------------- | ---- | -------------- |
+| date | [DoNotDisturbDate](#donotdisturbdate) | Yes  | DND time to set.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+var doNotDisturbDate = {
+    type: Notification.DoNotDisturbType.TYPE_ONCE,
+    begin: new Date(),
+    end: new Date(2021, 11, 15, 18, 0)
+}
+Notification.setDoNotDisturbDate(doNotDisturbDate).then(() => {
+	console.info("setDoNotDisturbDate success");
+});
+```
+
+
+## Notification.setDoNotDisturbDate
+
+setDoNotDisturbDate(date: DoNotDisturbDate, userId: number, callback: AsyncCallback\<void\>): void
+
+Sets the DND time for a specified user. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                  |
+| -------- | --------------------- | ---- | ---------------------- |
+| date     | [DoNotDisturbDate](#donotdisturbdate)      | Yes  | DND time to set.        |
+| userId   | number                | Yes  | ID of the user for whom you want to set the DND time.|
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+function setDoNotDisturbDateCallback(err) {
+    if (err) {
+        console.info("setDoNotDisturbDate failed " + JSON.stringify(err));
+    } else {
+        console.info("setDoNotDisturbDate success");
+    }
+}
+
+var doNotDisturbDate = {
+    type: Notification.DoNotDisturbType.TYPE_ONCE,
+    begin: new Date(),
+    end: new Date(2021, 11, 15, 18, 0)
+}
+
+var userId = 1
+
+Notification.setDoNotDisturbDate(doNotDisturbDate, userId, setDoNotDisturbDateCallback);
+```
+
+
+
+## Notification.setDoNotDisturbDate
+
+setDoNotDisturbDate(date: DoNotDisturbDate, userId: number): Promise\<void\>
+
+Sets the DND time for a specified user. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type            | Mandatory| Description          |
+| ------ | ---------------- | ---- | -------------- |
+| date   | [DoNotDisturbDate](#donotdisturbdate) | Yes  | DND time to set.|
+| userId | number           | Yes  | ID of the user for whom you want to set the DND time.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+var doNotDisturbDate = {
+    type: Notification.DoNotDisturbType.TYPE_ONCE,
+    begin: new Date(),
+    end: new Date(2021, 11, 15, 18, 0)
+}
+
+var userId = 1
+
+Notification.setDoNotDisturbDate(doNotDisturbDate, userId).then(() => {
+	console.info("setDoNotDisturbDate success");
+});
+```
+
+
+## Notification.getDoNotDisturbDate
+
+getDoNotDisturbDate(callback: AsyncCallback\<DoNotDisturbDate\>): void
+
+Obtains the DND time. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                             | Mandatory| Description                  |
+| -------- | --------------------------------- | ---- | ---------------------- |
+| callback | AsyncCallback\<[DoNotDisturbDate](#donotdisturbdate)\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function getDoNotDisturbDateCallback(err,data) {
+    if (err) {
+        console.info("getDoNotDisturbDate failed " + JSON.stringify(err));
+    } else {
+        console.info("getDoNotDisturbDate success");
+    }
+}
+
+Notification.getDoNotDisturbDate(getDoNotDisturbDateCallback);
+```
+
+
+
+## Notification.getDoNotDisturbDate
+
+getDoNotDisturbDate(): Promise\<DoNotDisturbDate\>
+
+Obtains the DND time. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Return value**
+
+| Type                                            | Description                                     |
+| ------------------------------------------------ | ----------------------------------------- |
+| Promise\<[DoNotDisturbDate](#donotdisturbdate)\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.getDoNotDisturbDate().then((data) => {
+	console.info("getDoNotDisturbDate success, data: " + JSON.stringify(data));
+});
+```
+
+
+## Notification.getDoNotDisturbDate
+
+getDoNotDisturbDate(userId: number, callback: AsyncCallback\<DoNotDisturbDate\>): void
+
+Obtains the DND time of a specified user. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                             | Mandatory| Description                  |
+| -------- | --------------------------------- | ---- | ---------------------- |
+| callback | AsyncCallback\<[DoNotDisturbDate](#donotdisturbdate)\> | Yes  | Callback used to return the result.|
+| userId   | number                            | Yes  | User ID.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+function getDoNotDisturbDateCallback(err,data) {
+    if (err) {
+        console.info("getDoNotDisturbDate failed " + JSON.stringify(err));
+    } else {
+        console.info("getDoNotDisturbDate success");
+    }
+}
+
+var userId = 1
+
+Notification.getDoNotDisturbDate(userId, getDoNotDisturbDateCallback);
+```
+
+
+
+## Notification.getDoNotDisturbDate
+
+getDoNotDisturbDate(userId: number): Promise\<DoNotDisturbDate\>
+
+Obtains the DND time of a specified user. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                             | Mandatory| Description                  |
+| -------- | --------------------------------- | ---- | ---------------------- |
+| userId   | number                            | Yes  | User ID.|
+
+**Return value**
+
+| Type                                            | Description                                     |
+| ------------------------------------------------ | ----------------------------------------- |
+| Promise\<[DoNotDisturbDate](#donotdisturbdate)\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+var userId = 1
+
+Notification.getDoNotDisturbDate(userId).then((data) => {
+	console.info("getDoNotDisturbDate success, data: " + JSON.stringify(data));
+});
+```
+
+
+## Notification.supportDoNotDisturbMode
+
+supportDoNotDisturbMode(callback: AsyncCallback\<boolean\>): void
+
+Checks whether DND mode is supported. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                    | Mandatory| Description                            |
+| -------- | ------------------------ | ---- | -------------------------------- |
+| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function supportDoNotDisturbModeCallback(err,data) {
+    if (err) {
+        console.info("supportDoNotDisturbMode failed " + JSON.stringify(err));
+    } else {
+        console.info("supportDoNotDisturbMode success");
+    }
+}
+
+Notification.supportDoNotDisturbMode(supportDoNotDisturbModeCallback);
+```
+
+
+
+## Notification.supportDoNotDisturbMode
+
+supportDoNotDisturbMode(): Promise\<boolean\>
+
+Checks whether DND mode is supported. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+Notification.supportDoNotDisturbMode().then((data) => {
+	console.info("supportDoNotDisturbMode success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.isSupportTemplate
+
+isSupportTemplate(templateName: string, callback: AsyncCallback\<boolean\>): void
+
+Checks whether a specified template is supported. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name      | Type                    | Mandatory| Description                      |
+| ------------ | ------------------------ | ---- | -------------------------- |
+| templateName | string                   | Yes  | Template name.                  |
+| callback     | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600011  | Read template config failed.        |
+
+**Example**
+
+```javascript
+var templateName = 'process';
+function isSupportTemplateCallback(err, data) {
+    if (err) {
+        console.info("isSupportTemplate failed " + JSON.stringify(err));
+    } else {
+        console.info("isSupportTemplate success");
+    }
+}
+
+Notification.isSupportTemplate(templateName, isSupportTemplateCallback);
+```
+
+
+
+## Notification.isSupportTemplate
+
+isSupportTemplate(templateName: string): Promise\<boolean\>
+
+Checks whether a specified template is supported. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name      | Type  | Mandatory| Description    |
+| ------------ | ------ | ---- | -------- |
+| templateName | string | Yes  | Template name.|
+
+**Return value**
+
+| Type              | Description           |
+| ------------------ | --------------- |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600011  | Read template config failed.        |
+
+**Example**
+
+```javascript
+var templateName = 'process';
+
+Notification.isSupportTemplate(templateName).then((data) => {
+    console.info("isSupportTemplate success, data: " + JSON.stringify(data));
+});
+```
+
+
+
+## Notification.requestEnableNotification
+
+requestEnableNotification(callback: AsyncCallback\<void\>): void
+
+Requests notification to be enabled for this application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```javascript
+function requestEnableNotificationCallback(err) {
+    if (err) {
+        console.info("requestEnableNotification failed " + JSON.stringify(err));
+    } else {
+        console.info("requestEnableNotification success");
+    }
+};
+
+Notification.requestEnableNotification(requestEnableNotificationCallback);
+```
+
+
+
+## Notification.requestEnableNotification
+
+requestEnableNotification(): Promise\<void\>
+
+Requests notification to be enabled for this application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```javascript
+Notification.requestEnableNotification().then(() => {
+    console.info("requestEnableNotification success");
+});
+```
+
+
+
+## Notification.setDistributedEnable
+
+setDistributedEnable(enable: boolean, callback: AsyncCallback\<void\>): void
+
+Sets whether this device supports distributed notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| enable   | boolean                  | Yes  | Whether the device supports distributed notifications.|
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600010  | Distributed operation failed.       |
+
+**Example**
+
+```javascript
+function setDistributedEnableCallback() {
+    if (err) {
+        console.info("setDistributedEnable failed " + JSON.stringify(err));
+    } else {
+        console.info("setDistributedEnable success");
+    }
+};
+
+var enable = true
+
+Notification.setDistributedEnable(enable, setDistributedEnableCallback);
+```
+
+
+
+## Notification.setDistributedEnable
+
+setDistributedEnable(enable: boolean): Promise\<void>
+
+Sets whether this device supports distributed notifications. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| enable   | boolean                  | Yes  | Whether the device supports distributed notifications.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600010  | Distributed operation failed.       |
+
+**Example**
+
+```javascript
+var enable = true
+
+Notification.setDistributedEnable(enable).then(() => {
+        console.info("setDistributedEnable success");
+    });
+```
+
+
+## Notification.isDistributedEnabled
+
+isDistributedEnabled(callback: AsyncCallback\<boolean>): void
+
+Checks whether this device supports distributed notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600010  | Distributed operation failed.       |
+
+**Example**
+
+```javascript
+function isDistributedEnabledCallback(err, data) {
+    if (err) {
+        console.info("isDistributedEnabled failed " + JSON.stringify(err));
+    } else {
+        console.info("isDistributedEnabled success " + JSON.stringify(data));
+    }
+};
+
+Notification.isDistributedEnabled(isDistributedEnabledCallback);
+```
+
+
+
+## Notification.isDistributedEnabled
+
+isDistributedEnabled(): Promise\<boolean>
+
+Checks whether this device supports distributed notifications. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Return value**
+
+| Type              | Description                                         |
+| ------------------ | --------------------------------------------- |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600010  | Distributed operation failed.       |
+
+**Example**
+
+```javascript
+Notification.isDistributedEnabled()
+    .then((data) => {
+        console.info("isDistributedEnabled success, data: " + JSON.stringify(data));
+    });
+```
+
+
+## Notification.setDistributedEnableByBundle
+
+setDistributedEnableByBundle(bundle: BundleOption, enable: boolean, callback: AsyncCallback\<void>): void
+
+Sets whether a specified application supports distributed notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| bundle   | [BundleOption](#bundleoption)             | Yes  | Bundle information of the application.                  |
+| enable   | boolean                  | Yes  | Whether the application supports distributed notifications.                      |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 1600010  | Distributed operation failed.            |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```javascript
+function setDistributedEnableByBundleCallback(err) {
+    if (err) {
+        console.info("enableDistributedByBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("enableDistributedByBundle success");
+    }
+};
+
+var bundle = {
+    bundle: "bundleName1",
+}
+
+var enable = true
+
+Notification.setDistributedEnableByBundle(bundle, enable, setDistributedEnableByBundleCallback);
+```
+
+
+
+## Notification.setDistributedEnableByBundle
+
+setDistributedEnableByBundle(bundle: BundleOption, enable: boolean): Promise\<void>
+
+Sets whether a specified application supports distributed notifications. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| bundle   | [BundleOption](#bundleoption)             | Yes  | Bundle information of the application.               |
+| enable   | boolean                  | Yes  | Whether the application supports distributed notifications.                 |
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 1600010  | Distributed operation failed.            |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```javascript
+var bundle = {
+    bundle: "bundleName1",
+}
+
+var enable = true
+
+Notification.setDistributedEnableByBundle(bundle, enable).then(() => {
+        console.info("setDistributedEnableByBundle success");
+    });
+```
+
+## Notification.isDistributedEnabledByBundle
+
+isDistributedEnabledByBundle(bundle: BundleOption, callback: AsyncCallback\<boolean>): void
+
+Checks whether a specified application supports distributed notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| bundle   | [BundleOption](#bundleoption)             | Yes  | Bundle information of the application.                    |
+| callback | AsyncCallback\<boolean\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 1600010  | Distributed operation failed.            |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```javascript
+function isDistributedEnabledByBundleCallback(data) {
+    if (err) {
+        console.info("isDistributedEnabledByBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("isDistributedEnabledByBundle success" + JSON.stringify(data));
+    }
+};
+
+var bundle = {
+    bundle: "bundleName1",
+}
+
+Notification.isDistributedEnabledByBundle(bundle, isDistributedEnabledByBundleCallback);
+```
+
+
+
+## Notification.isDistributedEnabledByBundle
+
+isDistributedEnabledByBundle(bundle: BundleOption): Promise\<boolean>
+
+Checks whether a specified application supports distributed notifications. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                    | Mandatory| Description                      |
+| -------- | ------------------------ | ---- | -------------------------- |
+| bundle   | [BundleOption](#bundleoption)             | Yes  | Bundle information of the application.               |
+
+**Return value**
+
+| Type              | Description                                             |
+| ------------------ | ------------------------------------------------- |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 1600010  | Distributed operation failed.            |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```javascript
+var bundle = {
+    bundle: "bundleName1",
+}
+
+Notification.isDistributedEnabledByBundle(bundle).then((data) => {
+    console.info("isDistributedEnabledByBundle success, data: " + JSON.stringify(data));
+});
+```
+
+
+## Notification.getDeviceRemindType
+
+getDeviceRemindType(callback: AsyncCallback\<DeviceRemindType\>): void
+
+Obtains the notification reminder type. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type                              | Mandatory| Description                      |
+| -------- | --------------------------------- | ---- | -------------------------- |
+| callback | AsyncCallback\<[DeviceRemindType](#deviceremindtype)\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```javascript
+function getDeviceRemindTypeCallback(err, data) {
+    if (err) {
+        console.info("getDeviceRemindType failed " + JSON.stringify(err));
+    } else {
+        console.info("getDeviceRemindType success");
+    }
+};
+
+Notification.getDeviceRemindType(getDeviceRemindTypeCallback);
+```
+
+
+
+## Notification.getDeviceRemindType
+
+getDeviceRemindType(): Promise\<DeviceRemindType\>
+
+Obtains the notification reminder type. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Return value**
+
+| Type              | Description           |
+| ------------------ | --------------- |
+| Promise\<[DeviceRemindType](#deviceremindtype)\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```javascript
+Notification.getDeviceRemindType().then((data) => {
+    console.info("getDeviceRemindType success, data: " + JSON.stringify(data));
+});
+```
+
+
+## Notification.publishAsBundle
+
+publishAsBundle(request: NotificationRequest, representativeBundle: string, userId: number, callback: AsyncCallback\<void\>): void
+
+Publishes a notification through the reminder agent. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name              | Type                                       | Mandatory| Description                                    |
+| -------------------- | ------------------------------------------- | ---- | ---------------------------------------- |
+| request              | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                      |
+| userId               | number                                      | Yes  | User ID.                                |
+| callback             | AsyncCallback                               | Yes  | Callback used to return the result.                |
+
+**Error codes**
+
+| ID| Error Message                                 |
+| -------- | ----------------------------------------- |
+| 1600001  | Internal error.                           |
+| 1600002  | Marshalling or unmarshalling error.       |
+| 1600003  | Failed to connect service.                |
+| 1600004  | Notification is not enabled.              |
+| 1600005  | Notification slot is not enabled.         |
+| 1600008  | The user is not exist.                    |
+| 1600009  | Over max number notifications per second. |
+
+**Example**
+
+```js
+// publishAsBundle callback
+function callback(err) {
+    if (err) {
+        console.info("publishAsBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("publishAsBundle success");
+    }
+}
+// Bundle name of the application whose notification function is taken over by the reminder agent
+let representativeBundle = "com.example.demo"
+// User ID
+let userId = 100
+// NotificationRequest object
+let request = {
+    id: 1,
+    content: {
+        contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
+        normal: {
+            title: "test_title",
+            text: "test_text",
+            additionalText: "test_additionalText"
+        }
+    }
+}
+
+Notification.publishAsBundle(request, representativeBundle, userId, callback);
+```
+
+## Notification.publishAsBundle
+
+publishAsBundle(request: NotificationRequest, representativeBundle: string, userId: number): Promise\<void\>
+
+Publishes a notification through the reminder agent. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+
+| Name              | Type                                       | Mandatory| Description                                         |
+| -------------------- | ------------------------------------------- | ---- | --------------------------------------------- |
+| request              | [NotificationRequest](#notificationrequest) | Yes  | Content and related configuration of the notification to publish.|
+| representativeBundle | string                                      | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.                           |
+| userId               | number                                      | Yes  | User ID.                           |
+
+**Error codes**
+
+| ID| Error Message                                 |
+| -------- | ----------------------------------------- |
+| 1600001  | Internal error.                           |
+| 1600002  | Marshalling or unmarshalling error.       |
+| 1600003  | Failed to connect service.                |
+| 1600004  | Notification is not enabled.              |
+| 1600005  | Notification slot is not enabled.         |
+| 1600008  | The user is not exist.                    |
+| 1600009  | Over max number notifications per second. |
+
+**Example**
+
+```js
+// Bundle name of the application whose notification function is taken over by the reminder agent
+let representativeBundle = "com.example.demo"
+// User ID
+let userId = 100
+// NotificationRequest object
+var request = {
+    id: 1,
+    content: {
+        contentType: Notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
+        normal: {
+            title: "test_title",
+            text: "test_text",
+            additionalText: "test_additionalText"
+        }
+    }
+}
+
+Notification.publishAsBundle(request, representativeBundle, userId).then(() => {
+	console.info("publishAsBundle success");
+});
+```
+
+## Notification.cancelAsBundle
+
+cancelAsBundle(id: number, representativeBundle: string, userId: number, callback: AsyncCallback\<void\>): void
+
+Cancels a notification published by the reminder agent. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name              | Type         | Mandatory| Description                    |
+| -------------------- | ------------- | ---- | ------------------------ |
+| id                   | number        | Yes  | Notification ID.                |
+| representativeBundle | string        | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.      |
+| userId               | number        | Yes  | User ID.      |
+| callback             | AsyncCallback | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+// cancelAsBundle
+function cancelAsBundleCallback(err) {
+    if (err) {
+        console.info("cancelAsBundle failed " + JSON.stringify(err));
+    } else {
+        console.info("cancelAsBundle success");
+    }
+}
+// Bundle name of the application whose notification function is taken over by the reminder agent
+let representativeBundle = "com.example.demo"
+// User ID
+let userId = 100
+
+Notification.cancelAsBundle(0, representativeBundle, userId, cancelAsBundleCallback);
+```
+
+## Notification.cancelAsBundle
+
+cancelAsBundle(id: number, representativeBundle: string, userId: number): Promise\<void\>
+
+Cancels a notification published by the reminder agent. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER, ohos.permission.NOTIFICATION_AGENT_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name              | Type  | Mandatory| Description              |
+| -------------------- | ------ | ---- | ------------------ |
+| id                   | number | Yes  | Notification ID.          |
+| representativeBundle | string | Yes  | Bundle name of the application whose notification function is taken over by the reminder agent.|
+| userId               | number | Yes  | User ID.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+// Bundle name of the application whose notification function is taken over by the reminder agent
+let representativeBundle = "com.example.demo"
+// User ID
+let userId = 100
+
+Notification.cancelAsBundle(0, representativeBundle, userId).then(() => {
+	console.info("cancelAsBundle success");
+});
+```
+
+## Notification.setNotificationEnableSlot 
+
+setNotificationEnableSlot(bundle: BundleOption, type: SlotType, enable: boolean, callback: AsyncCallback\<void>): void
+
+Sets whether to enable a specified notification slot type for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name  | Type                         | Mandatory| Description                  |
+| -------- | ----------------------------- | ---- | ---------------------- |
+| bundle   | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.          |
+| type     | [SlotType](#slottype)         | Yes  | Notification slot type.        |
+| enable   | boolean                       | Yes  | Whether to enable the notification slot type.            |
+| callback | AsyncCallback\<void\>         | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+// setNotificationEnableSlot
+function setNotificationEnableSlotCallback(err) {
+    if (err) {
+        console.info("setNotificationEnableSlot failed " + JSON.stringify(err));
+    } else {
+        console.info("setNotificationEnableSlot success");
+    }
+};
+
+Notification.setNotificationEnableSlot(
+    { bundle: "ohos.samples.notification", },
+    Notification.SlotType.SOCIAL_COMMUNICATION,
+    true,
+    setNotificationEnableSlotCallback);
+```
+
+## Notification.setNotificationEnableSlot
+
+setNotificationEnableSlot(bundle: BundleOption, type: SlotType, enable: boolean): Promise\<void> 
+
+Sets whether to enable a specified notification slot type for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name| Type                         | Mandatory| Description          |
+| ------ | ----------------------------- | ---- | -------------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.  |
+| type   | [SlotType](#slottype)         | Yes  | Notification slot type.|
+| enable | boolean                       | Yes  | Whether to enable the notification slot type.    |
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+// setNotificationEnableSlot
+Notification.setNotificationEnableSlot(
+    { bundle: "ohos.samples.notification", },
+    Notification.SlotType.SOCIAL_COMMUNICATION,
+    true).then(() => {
+        console.info("setNotificationEnableSlot success");
+    });
+```
+
+## Notification.isNotificationSlotEnabled
+
+isNotificationSlotEnabled(bundle: BundleOption, type: SlotType, callback: AsyncCallback\<boolean\>): void
+
+Checks whether a specified notification slot type is enabled for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name  | Type                         | Mandatory| Description                  |
+| -------- | ----------------------------- | ---- | ---------------------- |
+| bundle   | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.          |
+| type     | [SlotType](#slottype)         | Yes  | Notification slot type.        |
+| callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+// isNotificationSlotEnabled
+function getEnableSlotCallback(err, data) {
+    if (err) {
+        console.info("isNotificationSlotEnabled failed " + JSON.stringify(err));
+    } else {
+        console.info("isNotificationSlotEnabled success");
+    }
+};
+
+Notification.isNotificationSlotEnabled(
+    { bundle: "ohos.samples.notification", },
+    Notification.SlotType.SOCIAL_COMMUNICATION,
+    getEnableSlotCallback);
+```
+
+## Notification.isNotificationSlotEnabled
+
+isNotificationSlotEnabled(bundle: BundleOption, type: SlotType): Promise\<boolean\>  
+
+Checks whether a specified notification slot type is enabled for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name| Type                         | Mandatory| Description          |
+| ------ | ----------------------------- | ---- | -------------- |
+| bundle | [BundleOption](#bundleoption) | Yes  | Bundle information of the application.  |
+| type   | [SlotType](#slottype)         | Yes  | Notification slot type.|
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+// isNotificationSlotEnabled
+Notification.isNotificationSlotEnabled({ bundle: "ohos.samples.notification", },
+    Notification.SlotType.SOCIAL_COMMUNICATION).then((data) => {
+    console.info("isNotificationSlotEnabled success, data: " + JSON.stringify(data));
+});
+```
+
+
+## Notification.setSyncNotificationEnabledWithoutApp
+
+setSyncNotificationEnabledWithoutApp(userId: number, enable: boolean, callback: AsyncCallback\<void\>): void
+
+Sets whether to enable the notification sync feature for devices where the application is not installed. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name| Type                         | Mandatory| Description          |
+| ------ | ----------------------------- | ---- | -------------- |
+| userId | number | Yes  | User ID.  |
+| enable | boolean | Yes  | Whether the feature is enabled.  |
+| callback | AsyncCallback\<void\>    | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+let userId = 100;
+let enable = true;
+
+function callback(err) {
+    if (err) {
+        console.info("setSyncNotificationEnabledWithoutApp failed " + JSON.stringify(err));
+    } else {
+        console.info("setSyncNotificationEnabledWithoutApp success");
+    }
+}
+
+Notification.setSyncNotificationEnabledWithoutApp(userId, enable, callback);
+```
+
+
+## Notification.setSyncNotificationEnabledWithoutApp
+
+setSyncNotificationEnabledWithoutApp(userId: number, enable: boolean): Promise\<void>
+
+Sets whether to enable the notification sync feature for devices where the application is not installed. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name| Type                         | Mandatory| Description          |
+| ------ | ----------------------------- | ---- | -------------- |
+| userId | number | Yes  | User ID.  |
+| enable | boolean | Yes  | Whether the feature is enabled.  |
+
+**Return value**
+
+| Type                                                       | Description                                                        |
+| ----------------------------------------------------------- | ------------------------------------------------------------ |
+| Promise\<void\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+let userId = 100;
+let enable = true;
+
+Notification.setSyncNotificationEnabledWithoutApp(userId, enable).then(() => {
+    console.info('setSyncNotificationEnabledWithoutApp success');
+}).catch((err) => {
+    console.info('setSyncNotificationEnabledWithoutApp, err:' + JSON.stringify(err));
+});
+```
+
+
+## Notification.getSyncNotificationEnabledWithoutApp
+
+getSyncNotificationEnabledWithoutApp(userId: number, callback: AsyncCallback\<boolean>): void
+
+Obtains whether the notification sync feature is enabled for devices where the application is not installed. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name| Type                         | Mandatory| Description          |
+| ------ | ----------------------------- | ---- | -------------- |
+| userId | number | Yes  | User ID.  |
+| callback | AsyncCallback\<boolean\>         | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+let userId = 100;
+
+function getSyncNotificationEnabledWithoutAppCallback(err, data) {
+    if (err) {
+        console.info('getSyncNotificationEnabledWithoutAppCallback, err:' + err);
+    } else {
+        console.info('getSyncNotificationEnabledWithoutAppCallback, data:' + data);
+    }
+}
+
+Notification.getSyncNotificationEnabledWithoutApp(userId, getSyncNotificationEnabledWithoutAppCallback);
+```
+
+
+## Notification.getSyncNotificationEnabledWithoutApp
+
+getSyncNotificationEnabledWithoutApp(userId: number): Promise\<boolean>
+
+Obtains whether the notification sync feature is enabled for devices where the application is not installed. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name| Type                         | Mandatory| Description          |
+| ------ | ----------------------------- | ---- | -------------- |
+| userId | number | Yes  | User ID.  |
+
+**Return value**
+
+| Type              | Description                                                        |
+| ------------------ | ------------------------------------------------------------ |
+| Promise\<boolean\> | Promise used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+let userId = 100;
+Notification.getSyncNotificationEnabledWithoutApp(userId).then((data) => {
+    console.info('getSyncNotificationEnabledWithoutApp, data:' + data);
+}).catch((err) => {
+    console.info('getSyncNotificationEnabledWithoutApp, err:' + err);
+});
+    .catch((err) => {
+        console.info('getSyncNotificationEnabledWithoutApp, err:', err);
+    });
+```
+
+
+
+
+## DoNotDisturbDate
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name | Type                                 | Readable| Writable| Description                  |
+| ----- | ------------------------------------- | ---- | ---- | ---------------------- |
+| type  | [DoNotDisturbType](#donotdisturbtype) | Yes  | Yes  | DND time type.|
+| begin | Date                                  | Yes  | Yes  | DND start time.|
+| end   | Date                                  | Yes  | Yes  | DND end time.|
+
+
+
+## DoNotDisturbType
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name        | Value              | Description                                      |
+| ------------ | ---------------- | ------------------------------------------ |
+| TYPE_NONE    | 0 | Non-DND.                          |
+| TYPE_ONCE    | 1 | One-shot DND at the specified time segment (only considering the hour and minute).|
+| TYPE_DAILY   | 2 | Daily DND at the specified time segment (only considering the hour and minute).|
+| TYPE_CLEARLY | 3 | DND at the specified time segment (considering the year, month, day, hour, and minute).    |
+
+
+## ContentType
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name                             | Value         | Description              |
+| --------------------------------- | ----------- | ------------------ |
+| NOTIFICATION_CONTENT_BASIC_TEXT   | NOTIFICATION_CONTENT_BASIC_TEXT | Normal text notification.    |
+| NOTIFICATION_CONTENT_LONG_TEXT    | NOTIFICATION_CONTENT_LONG_TEXT | Long text notification.  |
+| NOTIFICATION_CONTENT_PICTURE      | NOTIFICATION_CONTENT_PICTURE | Picture-attached notification.    |
+| NOTIFICATION_CONTENT_CONVERSATION | NOTIFICATION_CONTENT_CONVERSATION | Conversation notification.    |
+| NOTIFICATION_CONTENT_MULTILINE    | NOTIFICATION_CONTENT_MULTILINE | Multi-line text notification.|
+
+## SlotLevel
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name                             | Value         | Description              |
+| --------------------------------- | ----------- | ------------------ |
+| LEVEL_NONE                        | 0           | Notification is disabled.    |
+| LEVEL_MIN                         | 1           | Notification is enabled, but the notification icon is not displayed in the status bar, with no banner or alert tone.|
+| LEVEL_LOW                         | 2           | Notification is enabled, and the notification icon is displayed in the status bar, with no banner or alert tone.|
+| LEVEL_DEFAULT                     | 3           | Notification is enabled, and the notification icon is displayed in the status bar, with an alert tone but no banner.|
+| LEVEL_HIGH                        | 4           | Notification is enabled, and the notification icon is displayed in the status bar, with an alert tone and banner.|
+
+
+## BundleOption
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name  | Type  | Readable| Writable| Description  |
+| ------ | ------ |---- | --- |  ------ |
+| bundle | string | Yes | Yes | Bundle information of the application.|
+| uid    | number | Yes | Yes | User ID.|
+
+
+## SlotType
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name                | Value      | Description      |
+| -------------------- | -------- | ---------- |
+| UNKNOWN_TYPE         | 0 | Unknown type.|
+| SOCIAL_COMMUNICATION | 1 | Notification slot for social communication.|
+| SERVICE_INFORMATION  | 2 | Notification slot for service information.|
+| CONTENT_INFORMATION  | 3 | Notification slot for content consultation.|
+| OTHER_TYPES          | 0xFFFF | Notification slot for other purposes.|
+
+
+## NotificationActionButton
+
+Describes the button displayed in the notification.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name     | Type                                           | Readable| Writable| Description                     |
+| --------- | ----------------------------------------------- | --- | ---- | ------------------------- |
+| title     | string                                          | Yes | Yes | Button title.                 |
+| wantAgent | [WantAgent](js-apis-app-ability-wantAgent.md)   | Yes | Yes | **WantAgent** of the button.|
+| extras    | { [key: string]: any }                          | Yes | Yes | Extra information of the button.             |
+| userInput | [NotificationUserInput](#notificationuserinput) | Yes | Yes | User input object.         |
+
+
+## NotificationBasicContent
+
+Describes the normal text notification.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name          | Type  | Readable| Writable| Description                              |
+| -------------- | ------ | ---- | ---- | ---------------------------------- |
+| title          | string | Yes  | Yes  | Notification title.                        |
+| text           | string | Yes  | Yes  | Notification content.                        |
+| additionalText | string | Yes  | Yes  | Additional information of the notification.|
+
+
+## NotificationLongTextContent
+
+Describes the long text notification.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name          | Type  | Readable| Writable| Description                            |
+| -------------- | ------ | ---- | --- | -------------------------------- |
+| title          | string | Yes | Yes | Notification title.                        |
+| text           | string | Yes | Yes | Notification content.                        |
+| additionalText | string | Yes | Yes | Additional information of the notification.|
+| longText       | string | Yes | Yes | Long text of the notification.                    |
+| briefText      | string | Yes | Yes | Brief text of the notification.|
+| expandedTitle  | string | Yes | Yes | Title of the notification in the expanded state.                |
+
+
+## NotificationMultiLineContent
+
+Describes the multi-line text notification.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name          | Type           | Readable| Writable| Description                            |
+| -------------- | --------------- | --- | --- | -------------------------------- |
+| title          | string          | Yes | Yes | Notification title.                        |
+| text           | string          | Yes | Yes | Notification content.                        |
+| additionalText | string          | Yes | Yes | Additional information of the notification.|
+| briefText      | string          | Yes | Yes | Brief text of the notification.|
+| longTitle      | string          | Yes | Yes | Title of the notification in the expanded state.                |
+| lines          | Array\<string\> | Yes | Yes | Multi-line text of the notification.                  |
+
+
+## NotificationPictureContent
+
+Describe the picture-attached notification.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name          | Type          | Readable| Writable| Description                            |
+| -------------- | -------------- | ---- | --- | -------------------------------- |
+| title          | string         | Yes | Yes | Notification title.                        |
+| text           | string         | Yes | Yes | Notification content.                        |
+| additionalText | string         | Yes | Yes | Additional information of the notification.|
+| briefText      | string         | Yes | Yes | Brief text of the notification.|
+| expandedTitle  | string         | Yes | Yes | Title of the notification in the expanded state.                |
+| picture        | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes | Yes | Picture attached to the notification.                  |
+
+
+## NotificationContent
+
+Describes the notification content.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name       | Type                                                        | Readable| Writable| Description              |
+| ----------- | ------------------------------------------------------------ | ---- | --- | ------------------ |
+| contentType | [ContentType](#contenttype)                                  | Yes | Yes | Notification content type.      |
+| normal      | [NotificationBasicContent](#notificationbasiccontent)        | Yes | Yes | Normal text.  |
+| longText    | [NotificationLongTextContent](#notificationlongtextcontent)  | Yes | Yes | Long text.|
+| multiLine   | [NotificationMultiLineContent](#notificationmultilinecontent) | Yes | Yes | Multi-line text.  |
+| picture     | [NotificationPictureContent](#notificationpicturecontent)    | Yes | Yes | Picture-attached.  |
+
+
+## NotificationFlagStatus
+
+Describes the notification flag status.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name          | Value | Description                              |
+| -------------- | --- | --------------------------------- |
+| TYPE_NONE      | 0   | The default flag is used.                        |
+| TYPE_OPEN      | 1   | The notification flag is enabled.                    |
+| TYPE_CLOSE     | 2   | The notification flag is disabled.                    |
+
+
+## NotificationFlags
+
+Enumerates notification flags.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name            | Type                   | Readable| Writable| Description                              |
+| ---------------- | ---------------------- | ---- | ---- | --------------------------------- |
+| soundEnabled     | [NotificationFlagStatus](#notificationflagstatus) | Yes  | No  | Whether to enable the sound alert for the notification.                 |
+| vibrationEnabled | [NotificationFlagStatus](#notificationflagstatus) | Yes  | No  |   Whether to enable vibration for the notification.              |
+
+
+## NotificationRequest
+
+Describes the notification request.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name                 | Type                                         | Readable| Writable| Description                      |
+| --------------------- | --------------------------------------------- | ---- | --- | -------------------------- |
+| content               | [NotificationContent](#notificationcontent)   | Yes | Yes | Notification content.                  |
+| id                    | number                                        | Yes | Yes | Notification ID.                    |
+| slotType              | [SlotType](#slottype)                         | Yes | Yes | Notification slot type.                  |
+| isOngoing             | boolean                                       | Yes | Yes | Whether the notification is an ongoing notification.            |
+| isUnremovable         | boolean                                       | Yes | Yes | Whether the notification can be removed.                |
+| deliveryTime          | number                                        | Yes | Yes | Time when the notification is sent.              |
+| tapDismissed          | boolean                                       | Yes | Yes | Whether the notification is automatically cleared.          |
+| autoDeletedTime       | number                                        | Yes | Yes | Time when the notification is automatically cleared.            |
+| wantAgent             | [WantAgent](js-apis-app-ability-wantAgent.md) | Yes | Yes | **WantAgent** instance to which the notification will be redirected after being clicked.|
+| extraInfo             | {[key: string]: any}                          | Yes | Yes | Extended parameters.                  |
+| color                 | number                                        | Yes | Yes | Background color of the notification. Not supported currently.|
+| colorEnabled          | boolean                                       | Yes | Yes | Whether the notification background color can be enabled. Not supported currently.|
+| isAlertOnce           | boolean                                       | Yes | Yes | Whether the notification triggers an alert only once.|
+| isStopwatch           | boolean                                       | Yes | Yes | Whether to display the stopwatch.          |
+| isCountDown           | boolean                                       | Yes | Yes | Whether to display the countdown time.        |
+| isFloatingIcon        | boolean                                       | Yes | Yes | Whether the notification is displayed as a floating icon in the status bar.        |
+| label                 | string                                        | Yes | Yes | Notification label.                  |
+| badgeIconStyle        | number                                        | Yes | Yes | Notification badge type.              |
+| showDeliveryTime      | boolean                                       | Yes | Yes | Whether to display the time when the notification is delivered.          |
+| actionButtons         | Array\<[NotificationActionButton](#notificationactionbutton)\>             | Yes | Yes | Buttons in the notification. Up to two buttons are allowed.    |
+| smallIcon             | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes | Yes | Small notification icon. This field is optional, and the icon size cannot exceed 30 KB.|
+| largeIcon             | [image.PixelMap](js-apis-image.md#pixelmap7) | Yes | Yes | Large notification icon. This field is optional, and the icon size cannot exceed 30 KB.|
+| creatorBundleName     | string                                        | Yes | No | Name of the bundle that creates the notification.            |
+| creatorUid            | number                                        | Yes | No | UID used for creating the notification.             |
+| creatorPid            | number                                        | Yes | No | PID used for creating the notification.             |
+| creatorUserId| number                                    | Yes | No | ID of the user who creates the notification.          |
+| hashCode              | string                                        | Yes | No | Unique ID of the notification.              |
+| classification        | string                                        | Yes | Yes | Notification category.<br>**System API**: This is a system API and cannot be called by third-party applications.                  |
+| groupName| string                                        | Yes | Yes | Notification group name.                |
+| template | [NotificationTemplate](#notificationtemplate) | Yes | Yes | Notification template.                  |
+| isRemoveAllowed | boolean                                | Yes | No | Whether the notification can be removed.<br>**System API**: This is a system API and cannot be called by third-party applications.                  |
+| source   | number                                        | Yes | No | Notification source.<br>**System API**: This is a system API and cannot be called by third-party applications.                  |
+| distributedOption   | [DistributedOptions](#distributedoptions)                 | Yes | Yes | Distributed notification options.         |
+| deviceId | string                                        | Yes | No | Device ID of the notification source.<br>**System API**: This is a system API and cannot be called by third-party applications.         |
+| notificationFlags | [NotificationFlags](#notificationflags)                    | Yes | No | Notification flags.         |
+| removalWantAgent | [WantAgent](js-apis-app-ability-wantAgent.md) | Yes | Yes | **WantAgent** instance to which the notification will be redirected when it is removed.         |
+| badgeNumber | number                    | Yes | Yes | Number of notifications displayed on the application icon.         |
+
+
+## DistributedOptions
+
+Describes distributed options.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name                  | Type           | Readable| Writable| Description                              |
+| ---------------------- | -------------- | ---- | ---- | ---------------------------------- |
+| isDistributed          | boolean        | Yes  | Yes  | Whether the notification is a distributed notification.                 |
+| supportDisplayDevices  | Array\<string> | Yes  | Yes  | List of the devices to which the notification can be synchronized.        |
+| supportOperateDevices  | Array\<string> | Yes  | Yes  | List of the devices on which the notification can be opened.             |
+| remindType             | number         | Yes  | No  | Notification reminder type.<br>**System API**: This is a system API and cannot be called by third-party applications.                   |
+
+
+## NotificationSlot
+
+Describes the notification slot.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name                | Type                 | Readable| Writable| Description                                      |
+| -------------------- | --------------------- | ---- | --- | ------------------------------------------ |
+| type                 | [SlotType](#slottype) | Yes | Yes | Notification slot type.                                  |
+| level                | number                | Yes | Yes | Notification level. If this parameter is not set, the default value is used based on the notification slot type.|
+| desc                 | string                | Yes | Yes | Notification slot description.                          |
+| badgeFlag            | boolean               | Yes | Yes | Whether to display the badge.                              |
+| bypassDnd            | boolean               | Yes | Yes | Whether to bypass DND mode in the system.              |
+| lockscreenVisibility | number                | Yes | Yes | Mode for displaying the notification on the lock screen.                |
+| vibrationEnabled     | boolean               | Yes | Yes | Whether vibration is enabled for the notification.                                |
+| sound                | string                | Yes | Yes | Notification alert tone.                                |
+| lightEnabled         | boolean               | Yes | Yes | Whether the indicator blinks for the notification.                                  |
+| lightColor           | number                | Yes | Yes | Indicator color of the notification.                                |
+| vibrationValues      | Array\<number\>       | Yes | Yes | Vibration mode of the notification.                              |
+| enabled<sup>9+</sup> | boolean               | Yes | No | Whether the notification slot is enabled.                     |
+
+
+## NotificationTemplate
+
+Describes the notification template.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name| Type                   | Readable| Writable| Description      |
+| ---- | ---------------------- | ---- | ---- | ---------- |
+| name | string                 | Yes  | Yes  | Template name.|
+| data | {[key:string]: Object} | Yes  | Yes  | Template data.|
+
+
+## NotificationUserInput
+
+Provides the notification user input.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name    | Type  | Readable| Writable| Description                         |
+| -------- | ------ | --- | ---- | ----------------------------- |
+| inputKey | string | Yes | Yes | Key to identify the user input.|
+
+
+## DeviceRemindType
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name                | Value | Description                              |
+| -------------------- | --- | --------------------------------- |
+| IDLE_DONOT_REMIND    | 0   | The device is not in use. No notification is required.           |
+| IDLE_REMIND          | 1   | The device is not in use.                |
+| ACTIVE_DONOT_REMIND  | 2   | The device is in use. No notification is required.           |
+| ACTIVE_REMIND        | 3   | The device is in use.                |
+
+
+## SourceType
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name                | Value | Description                 |
+| -------------------- | --- | -------------------- |
+| TYPE_NORMAL          | 0   | Normal notification.           |
+| TYPE_CONTINUOUS      | 1   | Continuous notification.           |
+| TYPE_TIMER           | 2   | Timed notification.           |
diff --git a/en/application-dev/reference/apis/js-apis-notificationSubscribe.md b/en/application-dev/reference/apis/js-apis-notificationSubscribe.md
new file mode 100644
index 0000000000000000000000000000000000000000..ed0ad9400ed59c637b5495c7b20f8770b0b4329c
--- /dev/null
+++ b/en/application-dev/reference/apis/js-apis-notificationSubscribe.md
@@ -0,0 +1,1074 @@
+# @ohos.notificationSubscribe
+
+The **NotificationSubscribe** module provides APIs for notification subscription, notification unsubscription, subscription removal, and more. In general cases, only system applications can call these APIs.
+
+> **NOTE**
+>
+> The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+
+## Modules to Import
+
+```js
+import NotificationSubscribe from '@ohos.notificationSubscribe';
+```
+
+
+
+## NotificationSubscribe.subscribe
+
+subscribe(subscriber: NotificationSubscriber, info: NotificationSubscribeInfo, callback: AsyncCallback\<void\>): void
+
+Subscribes to a notification with the subscription information specified. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name      | Type                     | Mandatory| Description            |
+| ---------- | ------------------------- | ---- | ---------------- |
+| subscriber | [NotificationSubscriber](#notificationsubscriber)    | Yes  | Notification subscriber.    |
+| info       | [NotificationSubscribeInfo](#notificationsubscribeinfo) | Yes  | Notification subscription information.|
+| callback   | AsyncCallback\<void\>     | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+// subscribe callback
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribe success");
+    }
+}
+function onConsumeCallback(data) {
+	console.info("Consume callback: " + JSON.stringify(data));
+}
+var subscriber = {
+    onConsume: onConsumeCallback
+}
+var info = {
+    bundleNames: ["bundleName1","bundleName2"]
+}
+NotificationSubscribe.subscribe(subscriber, info, subscribeCallback);
+```
+
+
+
+## NotificationSubscribe.subscribe
+
+subscribe(subscriber: NotificationSubscriber, callback: AsyncCallback\<void\>): void
+
+Subscribes to notifications of all applications under this user. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name      | Type                  | Mandatory| Description            |
+| ---------- | ---------------------- | ---- | ---------------- |
+| subscriber | [NotificationSubscriber](#notificationsubscriber) | Yes  | Notification subscriber.    |
+| callback   | AsyncCallback\<void\>  | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribe success");
+    }
+}
+function onConsumeCallback(data) {
+	console.info("Consume callback: " + JSON.stringify(data));
+}
+var subscriber = {
+    onConsume: onConsumeCallback
+}
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+
+
+## NotificationSubscribe.subscribe
+
+subscribe(subscriber: NotificationSubscriber, info?: NotificationSubscribeInfo): Promise\<void\>
+
+Subscribes to a notification with the subscription information specified. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name      | Type                     | Mandatory| Description        |
+| ---------- | ------------------------- | ---- | ------------ |
+| subscriber | [NotificationSubscriber](#notificationsubscriber)    | Yes  | Notification subscriber.|
+| info       | [NotificationSubscribeInfo](#notificationsubscribeinfo) | No  | Notification subscription information.  |
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function onConsumeCallback(data) {
+    console.info("Consume callback: " + JSON.stringify(data));
+}
+var subscriber = {
+    onConsume: onConsumeCallback
+};
+NotificationSubscribe.subscribe(subscriber).then(() => {
+	console.info("subscribe success");
+});
+```
+
+
+
+## NotificationSubscribe.unsubscribe
+
+unsubscribe(subscriber: NotificationSubscriber, callback: AsyncCallback\<void\>): void
+
+Unsubscribes from a notification. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name      | Type                  | Mandatory| Description                |
+| ---------- | ---------------------- | ---- | -------------------- |
+| subscriber | [NotificationSubscriber](#notificationsubscriber) | Yes  | Notification subscriber.        |
+| callback   | AsyncCallback\<void\>  | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function unsubscribeCallback(err) {
+    if (err) {
+        console.info("unsubscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("unsubscribe success");
+    }
+}
+function onDisconnectCallback(data) {
+	console.info("Cancel callback: " + JSON.stringify(data));
+}
+var subscriber = {
+    onDisconnect: onDisconnectCallback
+}
+NotificationSubscribe.unsubscribe(subscriber, unsubscribeCallback);
+```
+
+
+
+## NotificationSubscribe.unsubscribe
+
+unsubscribe(subscriber: NotificationSubscriber): Promise\<void\>
+
+Unsubscribes from a notification. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name      | Type                  | Mandatory| Description        |
+| ---------- | ---------------------- | ---- | ------------ |
+| subscriber | [NotificationSubscriber](#notificationsubscriber) | Yes  | Notification subscriber.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function onDisconnectCallback(data) {
+	console.info("Cancel callback: " + JSON.stringify(data));
+}
+var subscriber = {
+    onDisconnect: onDisconnectCallback
+};
+NotificationSubscribe.unsubscribe(subscriber).then(() => {
+	console.info("unsubscribe success");
+});
+```
+
+
+
+## NotificationSubscribe.remove
+
+remove(bundle: BundleOption, notificationKey: NotificationKey, reason: RemoveReason, callback: AsyncCallback\<void\>): void
+
+Removes a notification for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name           | Type                               | Mandatory| Description                |
+| --------------- |   ----------------------------------| ---- | -------------------- |
+| bundle          | [BundleOption](#bundleoption)       | Yes  | Bundle information of the application.          |
+| notificationKey | [NotificationKey](#notificationkey) | Yes  | Notification key.            |
+| reason          | [RemoveReason](#removereason)      | Yes  | Reason for removing the notification.        |
+| callback        | AsyncCallback\<void\>               | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 1600007  | The notification is not exist.           |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function removeCallback(err) {
+    if (err) {
+        console.info("remove failed " + JSON.stringify(err));
+    } else {
+        console.info("remove success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+var notificationKey = {
+    id: 0,
+    label: "label",
+}
+var reason = NotificationSubscribe.RemoveReason.CLICK_REASON_REMOVE;
+NotificationSubscribe.remove(bundle, notificationKey, reason, removeCallback);
+```
+
+
+
+## NotificationSubscribe.remove
+
+remove(bundle: BundleOption, notificationKey: NotificationKey, reason: RemoveReason): Promise\<void\>
+
+Removes a notification for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name           | Type           | Mandatory| Description      |
+| --------------- | --------------- | ---- | ---------- |
+| bundle          | [BundleOption](#bundleoption)    | Yes  | Bundle information of the application.|
+| notificationKey | [NotificationKey](#notificationkey) | Yes  | Notification key.  |
+| reason          | [RemoveReason](#removereason) | Yes  | Reason for removing the notification.        |
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 1600007  | The notification is not exist.           |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+var bundle = {
+    bundle: "bundleName1",
+}
+var notificationKey = {
+    id: 0,
+    label: "label",
+}
+var reason = NotificationSubscribe.RemoveReason.CLICK_REASON_REMOVE;
+NotificationSubscribe.remove(bundle, notificationKey, reason).then(() => {
+	console.info("remove success");
+});
+```
+
+
+
+## NotificationSubscribe.remove
+
+remove(hashCode: string, reason: RemoveReason, callback: AsyncCallback\<void\>): void
+
+Removes a specified notification. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| hashCode | string                | Yes  | Unique notification ID. It is the **hashCode** in the [NotificationRequest](#notificationrequest) object of [SubscribeCallbackData](#subscribecallbackdata) of the [onConsume](#onconsume) callback.|
+| reason   | [RemoveReason](#removereason) | Yes  | Reason for removing the notification.        |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+
+**Example**
+
+```js
+var hashCode = 'hashCode'
+
+function removeCallback(err) {
+    if (err) {
+        console.info("remove failed " + JSON.stringify(err));
+    } else {
+        console.info("remove success");
+    }
+}
+var reason = NotificationSubscribe.RemoveReason.CANCEL_REASON_REMOVE;
+NotificationSubscribe.remove(hashCode, reason, removeCallback);
+```
+
+
+
+## NotificationSubscribe.remove
+
+remove(hashCode: string, reason: RemoveReason): Promise\<void\>
+
+Removes a specified notification. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type      | Mandatory| Description      |
+| -------- | ---------- | ---- | ---------- |
+| hashCode | string | Yes  | Unique notification ID.|
+| reason   | [RemoveReason](#removereason) | Yes  | Reason for removing the notification.        |
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600007  | The notification is not exist.      |
+
+**Example**
+
+```js
+var hashCode = 'hashCode'
+var reason = NotificationSubscribe.RemoveReason.CLICK_REASON_REMOVE;
+NotificationSubscribe.remove(hashCode, reason).then(() => {
+	console.info("remove success");
+});
+```
+
+
+
+## NotificationSubscribe.removeAll
+
+removeAll(bundle: BundleOption, callback: AsyncCallback\<void\>): void
+
+Removes all notifications for a specified application. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                        |
+| -------- | --------------------- | ---- | ---------------------------- |
+| bundle   | [BundleOption](#bundleoption)          | Yes  | Bundle information of the application.                  |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+function removeAllCallback(err) {
+    if (err) {
+        console.info("removeAll failed " + JSON.stringify(err));
+    } else {
+        console.info("removeAll success");
+    }
+}
+var bundle = {
+    bundle: "bundleName1",
+}
+NotificationSubscribe.removeAll(bundle, removeAllCallback);
+```
+
+
+
+## NotificationSubscribe.removeAll
+
+removeAll(callback: AsyncCallback\<void\>): void
+
+Removes all notifications. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name    | Type                 | Mandatory| Description                |
+| -------- | --------------------- | ---- | -------------------- |
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+
+**Example**
+
+```js
+function removeAllCallback(err) {
+    if (err) {
+        console.info("removeAll failed " + JSON.stringify(err));
+    } else {
+        console.info("removeAll success");
+    }
+}
+
+NotificationSubscribe.removeAll(removeAllCallback);
+```
+
+
+
+## NotificationSubscribe.removeAll
+
+removeAll(bundle?: BundleOption): Promise\<void\>
+
+Removes all notifications for a specified application. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| bundle | [BundleOption](#bundleoption) | No  | Bundle information of the application.|
+
+**Error codes**
+
+| ID| Error Message                                |
+| -------- | ---------------------------------------- |
+| 1600001  | Internal error.                          |
+| 1600002  | Marshalling or unmarshalling error.      |
+| 1600003  | Failed to connect service.               |
+| 17700001 | The specified bundle name was not found. |
+
+**Example**
+
+```js
+// If no application is specified, notifications of all applications are deleted.
+NotificationSubscribe.removeAll().then(() => {
+	console.info("removeAll success");
+});
+```
+
+## NotificationSubscribe.removeAll
+
+removeAll(userId: number, callback: AsyncCallback\<void>): void
+
+Removes all notifications for a specified user. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| userId | number | Yes  | User ID.|
+| callback | AsyncCallback\<void\> | Yes  | Callback used to return the result.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+function removeAllCallback(err) {
+    if (err) {
+        console.info("removeAll failed " + JSON.stringify(err));
+    } else {
+        console.info("removeAll success");
+    }
+}
+
+var userId = 1
+
+NotificationSubscribe.removeAll(userId, removeAllCallback);
+```
+
+## Notification.removeAll
+
+removeAll(userId: number): Promise\<void>
+
+Removes all notifications for a specified user. This API uses a promise to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**Required permissions**: ohos.permission.NOTIFICATION_CONTROLLER
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name  | Type        | Mandatory| Description      |
+| ------ | ------------ | ---- | ---------- |
+| userId | number | Yes  | User ID.|
+
+**Error codes**
+
+| ID| Error Message                           |
+| -------- | ----------------------------------- |
+| 1600001  | Internal error.                     |
+| 1600002  | Marshalling or unmarshalling error. |
+| 1600003  | Failed to connect service.          |
+| 1600008  | The user is not exist.              |
+
+**Example**
+
+```js
+function removeAllCallback(err) {
+    if (err) {
+        console.info("removeAll failed " + JSON.stringify(err));
+    } else {
+        console.info("removeAll success");
+    }
+}
+
+var userId = 1
+
+NotificationSubscribe.removeAll(userId, removeAllCallback);
+```
+
+
+
+## NotificationSubscriber
+
+Provides callbacks for receiving or removing notifications and serves as the input parameter of [subscribe](#notificationsubscribe).
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+### onConsume
+
+onConsume?: (data: [SubscribeCallbackData](#subscribecallbackdata)) => void
+
+Callback for receiving notifications.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------------ | ------------------------ | ---- | -------------------------- |
+| data | [SubscribeCallbackData](#subscribecallbackdata) | Yes| Information about the notification received.|
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onConsumeCallback(data) {
+    console.info('===> onConsume in test');
+    let req = data.request;
+    console.info('===> onConsume callback req.id:' + req.id);
+};
+
+var subscriber = {
+    onConsume: onConsumeCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+### onCancel
+
+onCancel?:(data: [SubscribeCallbackData](#subscribecallbackdata)) => void
+
+Callback for canceling notifications.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------------ | ------------------------ | ---- | -------------------------- |
+| data | [SubscribeCallbackData](#subscribecallbackdata) | Yes| Information about the notification to cancel.|
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onCancelCallback(data) {
+    console.info('===> onCancel in test');
+    let req = data.request;
+    console.info('===> onCancel callback req.id:' + req.id);
+}
+
+var subscriber = {
+    onCancel: onCancelCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+### onUpdate
+
+onUpdate?:(data: [NotificationSortingMap](#notificationsortingmap)) => void
+
+Callback for notification sorting updates.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------------ | ------------------------ | ---- | -------------------------- |
+| data | [NotificationSortingMap](#notificationsortingmap) | Yes| Latest notification sorting list.|
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onUpdateCallback(map) {
+    console.info('===> onUpdateCallback map:' + JSON.stringify(map));
+}
+
+var subscriber = {
+    onUpdate: onUpdateCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+### onConnect
+
+onConnect?:() => void
+
+Callback for subscription.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onConnectCallback() {
+    console.info('===> onConnect in test');
+}
+
+var subscriber = {
+    onConnect: onConnectCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+### onDisconnect
+
+onDisconnect?:() => void
+
+Callback for unsubscription.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+function unsubscribeCallback(err) {
+    if (err.code) {
+        console.info("unsubscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("unsubscribeCallback");
+    }
+};
+
+function onConnectCallback() {
+    console.info('===> onConnect in test');
+}
+function onDisconnectCallback() {
+    console.info('===> onDisconnect in test');
+}
+
+var subscriber = {
+    onConnect: onConnectCallback,
+    onDisconnect: onDisconnectCallback
+};
+
+// The onConnect callback is invoked when subscription to the notification is complete.
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+// The onDisconnect callback is invoked when unsubscription to the notification is complete.
+NotificationSubscribe.unsubscribe(subscriber, unsubscribeCallback);
+```
+
+### onDestroy
+
+onDestroy?:() => void
+
+Callback for service disconnection.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onDestroyCallback() {
+    console.info('===> onDestroy in test');
+}
+
+var subscriber = {
+    onDestroy: onDestroyCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+### onDoNotDisturbDateChange
+
+onDoNotDisturbDateChange?:(mode: notification.[DoNotDisturbDate](js-apis-notificationManager.md#donotdisturbdate)) => void
+
+Callback for DND time setting updates.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------------ | ------------------------ | ---- | -------------------------- |
+| mode | notification.[DoNotDisturbDate](js-apis-notificationManager.md#DoNotDisturbDate) | Yes| DND time setting updates.|
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onDoNotDisturbDateChangeCallback(mode) {
+    console.info('===> onDoNotDisturbDateChange:' + mode);
+}
+
+var subscriber = {
+    onDoNotDisturbDateChange: onDoNotDisturbDateChangeCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+
+### onEnabledNotificationChanged
+
+onEnabledNotificationChanged?:(callbackData: [EnabledNotificationCallbackData](#enablednotificationcallbackdata)) => void
+
+Listens for the notification enabled status changes. This API uses an asynchronous callback to return the result.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------------ | ------------------------ | ---- | -------------------------- |
+| callback | AsyncCallback\<[EnabledNotificationCallbackData](#enablednotificationcallbackdata)\> | Yes| Callback used to return the result.|
+
+**Example**
+
+```javascript
+function subscribeCallback(err) {
+    if (err) {
+        console.info("subscribe failed " + JSON.stringify(err));
+    } else {
+        console.info("subscribeCallback");
+    }
+};
+
+function onEnabledNotificationChangedCallback(callbackData) {
+    console.info("bundle: ", callbackData.bundle);
+    console.info("uid: ", callbackData.uid);
+    console.info("enable: ", callbackData.enable);
+};
+
+var subscriber = {
+    onEnabledNotificationChanged: onEnabledNotificationChangedCallback
+};
+
+NotificationSubscribe.subscribe(subscriber, subscribeCallback);
+```
+
+## BundleOption
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name  | Type  | Readable| Writable| Description  |
+| ------ | ------ |---- | --- |  ------ |
+| bundle | string | Yes | Yes | Bundle information of the application.|
+| uid    | number | Yes | Yes | User ID.|
+
+## NotificationKey
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name | Type  | Readable| Writable| Description    |
+| ----- | ------ | ---- | --- | -------- |
+| id    | number | Yes | Yes | Notification ID.  |
+| label | string | Yes | Yes | Notification label.|
+
+## SubscribeCallbackData
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name           | Type                                             | Readable                                           | Writable                                           | Description    |
+| --------------- | ------------------------------------------------- | -------- | -------- | -------- |
+| request         | [NotificationRequest](js-apis-notificationManager.md#notificationrequest) | Yes| No| Notification content.|
+| sortingMap      | [NotificationSortingMap](#notificationsortingmap) | Yes| No| Notification sorting information.|
+| reason          | number                                            | Yes                                          | No                                          | Reason for deletion.|
+| sound           | string                                            | Yes                                          | No                                          | Sound used for notification.|
+| vibrationValues | Array\<number\>                                   | Yes                                 | No                                 | Vibration used for notification.|
+
+
+## EnabledNotificationCallbackData
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name  | Type   | Readable | Writable | Description            |
+| ------ | ------- | ---------------- | ---------------- | ---------------- |
+| bundle | string  | Yes| No| Bundle name of the application.      |
+| uid    | number  | Yes| No| UID of the application.       |
+| enable | boolean | Yes| No| Notification enabled status of the application.|
+
+
+## NotificationSorting
+
+Provides sorting information of activity notifications.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name    | Type                                 | Readable| Writable| Description        |
+| -------- | ------------------------------------- | ---- | --- | ------------ |
+| slot     | [NotificationSlot](js-apis-notificationManager.md#notificationslot) | Yes | No | Notification slot.|
+| hashCode | string                                | Yes | No | Unique ID of the notification.|
+| ranking  | number                                | Yes | No | Notification sequence number.|
+
+
+## NotificationSortingMap
+
+Provides sorting information of active notifications in all subscribed notifications.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name          | Type                                                        | Readable| Writable| Description            |
+| -------------- | ------------------------------------------------------------ | ---- | --- | ---------------- |
+| sortings       | {[key: string]: [NotificationSorting](#notificationsorting)} | Yes | No | Array of notification sorting information.|
+| sortedHashCode | Array\<string\>                                              | Yes | No | Array of unique notification IDs.|
+
+
+## NotificationSubscribeInfo
+
+Provides the information about the publisher for notification subscription.
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name       | Type           | Readable| Writable| Description                           |
+| ----------- | --------------- | --- | ---- | ------------------------------- |
+| bundleNames | Array\<string\> | Yes | Yes | Bundle names of the applications whose notifications are to be subscribed to.|
+| userId      | number          | Yes | Yes | User whose notifications are to be subscribed to.   |
+
+
+## NotificationUserInput
+
+Provides the notification user input.
+
+**System capability**: SystemCapability.Notification.Notification
+
+| Name    | Type  | Readable| Writable| Description                         |
+| -------- | ------ | --- | ---- | ----------------------------- |
+| inputKey | string | Yes | Yes | Key to identify the user input.|
+
+## RemoveReason
+
+**System capability**: SystemCapability.Notification.Notification
+
+**System API**: This is a system API and cannot be called by third-party applications.
+
+| Name                | Value | Description                 |
+| -------------------- | --- | -------------------- |
+| CLICK_REASON_REMOVE  | 1   | The notification is removed after a click on it.   |
+| CANCEL_REASON_REMOVE | 2   | The notification is removed by the user.        |
diff --git a/en/application-dev/reference/apis/js-apis-observer.md b/en/application-dev/reference/apis/js-apis-observer.md
index a6fcacc4333ab0aa48dae7cd8b629e1e77bb399f..ad7d19b4ab7a3cfa6593c81f2c70b52f403aa4d1 100644
--- a/en/application-dev/reference/apis/js-apis-observer.md
+++ b/en/application-dev/reference/apis/js-apis-observer.md
@@ -531,8 +531,8 @@ Enumerates SIM card types and states.
 
 **System capability**: SystemCapability.Telephony.StateRegistry
 
-| Name           | Type                 | Description                                                        |
-| ----------------- | --------------------- | ------------------------------------------------------------ |
-| type  | [CardType](js-apis-sim.md#cardtype) | SIM card type. For details, see [CardType](js-apis-sim.md#cardtype).|
-| state | [SimState](js-apis-sim.md#simstate) | SIM card status. For details, see [SimState](js-apis-sim.md#simstate).|
-| reason<sup>8+</sup>       | [LockReason](#lockreason8) | SIM card lock type.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| type  | [CardType](js-apis-sim.md#cardtype) | Yes| SIM card type. For details, see [CardType](js-apis-sim.md#cardtype).|
+| state | [SimState](js-apis-sim.md#simstate) | Yes| SIM card status. For details, see [SimState](js-apis-sim.md#simstate).|
+| reason<sup>8+</sup>       | [LockReason](#lockreason8) | Yes| SIM card lock type.|
diff --git a/en/application-dev/reference/apis/js-apis-pointer.md b/en/application-dev/reference/apis/js-apis-pointer.md
index 06bb32eecce0d9b40133160a8689c6b80c27ad61..ed71da2336509844e7baa5eea49f8a026e969eba 100644
--- a/en/application-dev/reference/apis/js-apis-pointer.md
+++ b/en/application-dev/reference/apis/js-apis-pointer.md
@@ -142,7 +142,7 @@ Sets the mouse movement speed. This API uses an asynchronous callback to return
 | Name      | Type                       | Mandatory  | Description                                   |
 | -------- | ------------------------- | ---- | ------------------------------------- |
 | speed    | number                    | Yes   | Mouse movement speed. The value ranges from **1** to **11**. The default value is **5**.  |
-| callback | AysncCallback&lt;void&gt; | Yes   | Callback used to return the result.|
+| callback | AsyncCallback&lt;void&gt; | Yes   | Callback used to return the result.|
 
 **Example**
 
@@ -349,7 +349,7 @@ Sets the mouse pointer style. This API uses an asynchronous callback to return t
 | ------------ | ------------------------------ | ---- | ----------------------------------- |
 | windowId     | number                         | Yes   | Window ID.                         |
 | pointerStyle | [PointerStyle](#pointerstyle9) | Yes   | Mouse pointer style ID.                            |
-| callback     | AysncCallback&lt;void&gt;      | Yes   | Callback used to return the result.|
+| callback     | AsyncCallback&lt;void&gt;      | Yes   | Callback used to return the result.|
 
 **Example**
 
diff --git a/en/application-dev/reference/apis/js-apis-radio.md b/en/application-dev/reference/apis/js-apis-radio.md
index 01d439fd2e3e9d1202aa6969cb15fda67fa9059d..91c6be9cd7d076dbb72a502e64363d729668972f 100644
--- a/en/application-dev/reference/apis/js-apis-radio.md
+++ b/en/application-dev/reference/apis/js-apis-radio.md
@@ -1734,8 +1734,8 @@ Enables listening for **imsRegStateChange** events for the SIM card in the speci
 **Example**
 
 ```js
-radio.on('imsRegStateChange', 0, radio.ImsServiceType.TYPE_VIDEO, (err, data) => {
-    console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
+radio.on('imsRegStateChange', 0, radio.ImsServiceType.TYPE_VIDEO, data => {
+    console.log(`callback: data->${JSON.stringify(data)}`);
 });
 ```
 
@@ -1763,8 +1763,8 @@ Disables listening for **imsRegStateChange** events for the SIM card in the spec
 **Example**
 
 ```js
-radio.off('imsRegStateChange', 0, radio.ImsServiceType.TYPE_VIDEO, (err, data) => {
-    console.log(`callback: err->${JSON.stringify(err)}, data->${JSON.stringify(data)}`);
+radio.off('imsRegStateChange', 0, radio.ImsServiceType.TYPE_VIDEO, data => {
+    console.log(`callback: data->${JSON.stringify(data)}`);
 });
 ```
 
@@ -1797,10 +1797,10 @@ Defines the signal strength.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name     | Type                       | Description              |
-| ----------- | --------------------------- | ------------------ |
-| signalType  | [NetworkType](#networktype) | Signal strength type.|
-| signalLevel | number                      | Signal strength level.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| signalType  | [NetworkType](#networktype) | Yes| Signal strength type.|
+| signalLevel | number                      | Yes| Signal strength level.|
 
 
 ## NetworkType
@@ -1825,17 +1825,17 @@ Defines the network status.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name           | Type                 | Description                                                        |
-| ----------------- | --------------------- | ------------------------------------------------------------ |
-| longOperatorName  | string                | Long carrier name of the registered network.|
-| shortOperatorName | string                | Short carrier name of the registered network.|
-| plmnNumeric       | string                | PLMN code of the registered network.|
-| isRoaming         | boolean               | Whether the user is roaming.|
-| regState          | [RegState](#regstate) | Network registration status of the device.|
-| cfgTech<sup>8+</sup> | [RadioTechnology](#radiotechnology) | RAT of the device.|
-| nsaState          | [NsaState](#nsastate) | NSA network registration status of the device.|
-| isCaActive        | boolean               | CA status.|
-| isEmergency       | boolean               | Whether only emergency calls are allowed.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| longOperatorName  | string                | Yes | Long carrier name of the registered network.|
+| shortOperatorName | string                | Yes | Short carrier name of the registered network.|
+| plmnNumeric       | string                | Yes | PLMN code of the registered network.|
+| isRoaming         | boolean               | Yes | Whether the user is roaming.|
+| regState          | [RegState](#regstate) | Yes | Network registration status of the device.|
+| cfgTech<sup>8+</sup> | [RadioTechnology](#radiotechnology) | Yes | RAT of the device.|
+| nsaState          | [NsaState](#nsastate) | Yes | NSA network registration status of the device.|
+| isCaActive        | boolean               | Yes | CA status.|
+| isEmergency       | boolean               | Yes | Whether only emergency calls are allowed.|
 
 
 ## RegState
@@ -1933,13 +1933,13 @@ Defines the cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name             | Type                                                        | Description                                                        |
-| ----------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| networkType       | [NetworkType](#networktype)                                  | Network type of the cell.                                    |
-| isCamped          | boolean                                                      | Status of the cell.                                        |
-| timeStamp         | number                                                       | Timestamp when cell information is obtained.                                |
-| signalInformation | [SignalInformation](#signalinformation)                      | Signal information.                                                  |
-| data              | [CdmaCellInformation](#cdmacellinformation8) \| [GsmCellInformation](#gsmcellinformation8) \| [LteCellInformation](#ltecellinformation8) \| [NrCellInformation](#nrcellinformation8) \| [TdscdmaCellInformation](#tdscdmacellinformation8) | CDMA cell information \|GSM cell information \|LTE cell information \|NR cell information \|TD-SCDMA cell information|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| networkType       | [NetworkType](#networktype) | Yes | Network type of the cell.                      |
+| isCamped          | boolean                     | Yes | Status of the cell.                            |
+| timeStamp         | number                     | Yes | Timestamp when cell information is obtained.    |
+| signalInformation | [SignalInformation](#signalinformation) | Yes | Signal information.                |
+| data              | [CdmaCellInformation](#cdmacellinformation8) \| [GsmCellInformation](#gsmcellinformation8) \| [LteCellInformation](#ltecellinformation8) \| [NrCellInformation](#nrcellinformation8) \| [TdscdmaCellInformation](#tdscdmacellinformation8) | Yes | CDMA cell information \|GSM cell information \|LTE cell information \|NR cell information \|TD-SCDMA cell information|
 
 ## CdmaCellInformation<sup>8+</sup>
 
@@ -1949,13 +1949,13 @@ Defines the CDMA cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name     | Type  | Description        |
-| --------- | ------ | ------------ |
-| baseId    | number | Base station ID.    |
-| latitude  | number | Longitude.      |
-| longitude | number | Latitude.      |
-| nid       | number | Network ID.|
-| sid       | number | System ID.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| baseId    | number | Yes | Base station ID.    |
+| latitude  | number | Yes | Longitude.      |
+| longitude | number | Yes | Latitude.      |
+| nid       | number | Yes | Network ID.|
+| sid       | number | Yes | System ID.|
 
 ## GsmCellInformation<sup>8+</sup>
 
@@ -1965,14 +1965,14 @@ Defines the GSM cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name  | Type  | Description                |
-| ------ | ------ | -------------------- |
-| lac    | number | Location area code.        |
-| cellId | number | Cell ID.            |
-| arfcn  | number | Absolute radio frequency channel number.|
-| bsic   | number | Base station ID.        |
-| mcc    | string | Mobile country code.        |
-| mnc    | string | Mobile network code.          |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| lac    | number | Yes | Location area code.        |
+| cellId | number | Yes | Cell ID.            |
+| arfcn  | number | Yes | Absolute radio frequency channel number.|
+| bsic   | number | Yes | Base station ID.        |
+| mcc    | string | Yes | Mobile country code.        |
+| mnc    | string | Yes | Mobile network code.          |
 
 ## LteCellInformation<sup>8+</sup>
 
@@ -1982,16 +1982,16 @@ Defines the LTE cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name         | Type   | Description                   |
-| ------------- | ------- | ----------------------- |
-| cgi           | number  | Cell global identification.         |
-| pci           | number  | Physical cell ID.         |
-| tac           | number  | Tracking area code.         |
-| earfcn        | number  | Absolute radio frequency channel number.   |
-| bandwidth     | number  | Bandwidth.                 |
-| mcc           | string  | Mobile country code.           |
-| mnc           | string  | Mobile network code.             |
-| isSupportEndc | boolean | Support New Radio_Dual Connectivity|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| cgi           | number  | Yes | Cell global identification.         |
+| pci           | number  | Yes | Physical cell ID.         |
+| tac           | number  | Yes | Tracking area code.         |
+| earfcn        | number  | Yes | Absolute radio frequency channel number.   |
+| bandwidth     | number  | Yes | Bandwidth.                 |
+| mcc           | string  | Yes | Mobile country code.           |
+| mnc           | string  | Yes | Mobile network code.             |
+| isSupportEndc | boolean | Yes | Support for New Radio_Dual Connectivity. |
 
 ## NrCellInformation<sup>8+</sup>
 
@@ -2001,14 +2001,14 @@ Defines the NR cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name   | Type  | Description            |
-| ------- | ------ | ---------------- |
-| nrArfcn | number | 5G frequency number.      |
-| pci     | number | Physical cell ID.  |
-| tac     | number | Tracking area code.  |
-| nci     | number | 5G network cell ID.|
-| mcc     | string | Mobile country code.    |
-| mnc     | string | Mobile network code.      |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| nrArfcn | number | Yes | 5G frequency number.      |
+| pci     | number | Yes | Physical cell ID.  |
+| tac     | number | Yes | Tracking area code.  |
+| nci     | number | Yes | 5G network cell ID.|
+| mcc     | string | Yes | Mobile country code.    |
+| mnc     | string | Yes | Mobile network code.      |
 
 ## TdscdmaCellInformation<sup>8+</sup>
 
@@ -2018,14 +2018,14 @@ Defines the TD-SCDMA cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name  | Type  | Description        |
-| ------ | ------ | ------------ |
-| lac    | number | Location area code.|
-| cellId | number | Cell ID.    |
-| cpid   | number | Cell parameter ID.|
-| uarfcn | number | Absolute radio frequency number.|
-| mcc    | string | Mobile country code.|
-| mnc    | string | Mobile network code.  |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| lac    | number | Yes | Location area code.|
+| cellId | number | Yes | Cell ID.    |
+| cpid   | number | Yes | Cell parameter ID.|
+| uarfcn | number | Yes | Absolute radio frequency number.|
+| mcc    | string | Yes | Mobile country code.|
+| mnc    | string | Yes | Mobile network code.  |
 
 ## WcdmaCellInformation<sup>8+</sup>
 
@@ -2035,14 +2035,14 @@ Defines the WCDMA cell information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name  | Type  | Description        |
-| ------ | ------ | ------------ |
-| lac    | number | Location area code.|
-| cellId | number | Cell ID.    |
-| psc    | number | Primary scrambling code.    |
-| uarfcn | number | Absolute radio frequency number.|
-| mcc    | string | Mobile country code.|
-| mnc    | string | Mobile network code.  |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| lac    | number | Yes | Location area code.|
+| cellId | number | Yes | Cell ID.    |
+| psc    | number | Yes | Primary scrambling code.    |
+| uarfcn | number | Yes | Absolute radio frequency number.|
+| mcc    | string | Yes | Mobile country code.|
+| mnc    | string | Yes | Mobile network code.  |
 
 ## NrOptionMode<sup>8+</sup>
 
@@ -2067,10 +2067,10 @@ Defines the network search result.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name                  | Type                                             | Description          |
-| ---------------------- | ------------------------------------------------- | -------------- |
-| isNetworkSearchSuccess | boolean                                           | Successful network search.|
-| networkSearchResult    | Array<[NetworkInformation](#networkinformation)\> | Network search result.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| isNetworkSearchSuccess | boolean                                           | Yes | Successful network search.|
+| networkSearchResult    | Array<[NetworkInformation](#networkinformation)\> | Yes | Network search result.|
 
 ## NetworkInformation
 
@@ -2080,12 +2080,12 @@ Defines the network information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name           | Type                                     | Description          |
-| --------------- | ----------------------------------------- | -------------- |
-| operatorName    | string                                    | Carrier name.|
-| operatorNumeric | string                                    | Carrier number.  |
-| state           | [NetworkInformation](#networkinformationstate) | Network information status.|
-| radioTech       | string                                    | Radio technology.  |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| operatorName    | string                                    | Yes | Carrier name.|
+| operatorNumeric | string                                    | Yes | Carrier number.  |
+| state           | [NetworkInformation](#networkinformationstate) | Yes | Network information status.|
+| radioTech       | string                                    | Yes | Radio technology.  |
 
 ## NetworkInformationState
 
@@ -2110,12 +2110,12 @@ Defines the network selection mode.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name              | Type                                         | Description                                  |
-| ------------------ | --------------------------------------------- | -------------------------------------- |
-| slotId             | number                                        | Card slot ID.<br>- **0**: card slot 1<br>- **1**: card slot 2|
-| selectMode         | [NetworkSelectionMode](#networkselectionmode) | Network selection mode.                       |
-| networkInformation | [NetworkInformation](#networkinformation)    | Network information.                           |
-| resumeSelection    | boolean                                       | Whether to resume selection.                            |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| slotId             | number                                        | Yes | Card slot ID.<br>- **0**: card slot 1<br>- **1**: card slot 2|
+| selectMode         | [NetworkSelectionMode](#networkselectionmode) | Yes | Network selection mode.                       |
+| networkInformation | [NetworkInformation](#networkinformation)    | Yes | Network information.                           |
+| resumeSelection    | boolean                                       | Yes | Whether to resume selection.                  |
 
 ## ImsRegState<sup>9+</sup>
 
@@ -2153,10 +2153,10 @@ Defines the IMS registration information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name       | Type                        | Description         |
-| ----------- | ---------------------------- | ------------- |
-| imsRegState | [ImsRegState](#imsregstate9) | IMS registration state.|
-| imsRegTech  | [ImsRegTech](#imsregtech9)   | IMS registration technology.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| imsRegState | [ImsRegState](#imsregstate9) | Yes | IMS registration state.|
+| imsRegTech  | [ImsRegTech](#imsregtech9)   | Yes | IMS registration technology.|
 
 ## ImsServiceType<sup>9+</sup>
 
diff --git a/en/application-dev/reference/apis/js-apis-request.md b/en/application-dev/reference/apis/js-apis-request.md
index 2220b4bbc02bd9a68fa900138869b6d3f6620675..5cf97609d706bcf49319962f204635c04ca23663 100644
--- a/en/application-dev/reference/apis/js-apis-request.md
+++ b/en/application-dev/reference/apis/js-apis-request.md
@@ -44,30 +44,53 @@ Only HTTP requests are supported. HTTPS requests are not supported.
 
 **System capability**: SystemCapability.MiscServices.Download
 
-| Name| Type| Readable| Writable| Description|
-| -------- | -------- | -------- | -------- | -------- |
-| NETWORK_MOBILE | number | Yes| No| Whether download is allowed on a mobile network.|
-| NETWORK_WIFI | number | Yes| No| Whether download is allowed on a WLAN.|
-| ERROR_CANNOT_RESUME<sup>7+</sup> | number | Yes| No| Failure to resume the download due to an error.|
-| ERROR_DEVICE_NOT_FOUND<sup>7+</sup> | number | Yes| No| Failure to find a storage device such as a memory card.|
-| ERROR_FILE_ALREADY_EXISTS<sup>7+</sup> | number | Yes| No| Failure to download the file because it already exists.|
-| ERROR_FILE_ERROR<sup>7+</sup> | number | Yes| No| File operation failure.|
-| ERROR_HTTP_DATA_ERROR<sup>7+</sup> | number | Yes| No| HTTP transmission failure.|
-| ERROR_INSUFFICIENT_SPACE<sup>7+</sup> | number | Yes| No| Insufficient storage space.|
-| ERROR_TOO_MANY_REDIRECTS<sup>7+</sup> | number | Yes| No| Error caused by too many network redirections.|
-| ERROR_UNHANDLED_HTTP_CODE<sup>7+</sup> | number | Yes| No| Unidentified HTTP code.|
-| ERROR_OFFLINE<sup>9+</sup> | number | Yes| No| No network connection.|
-| ERROR_UNSUPPORTED_NETWORK_TYPE<sup>9+</sup> | number | Yes| No| Network type mismatch.|
-| ERROR_UNKNOWN<sup>7+</sup> | number | Yes| No| Unknown error.|
-| PAUSED_QUEUED_FOR_WIFI<sup>7+</sup> | number | Yes| No| Download paused and queuing for a WLAN connection, because the file size exceeds the maximum value allowed by a mobile network session.|
-| PAUSED_UNKNOWN<sup>7+</sup> | number | Yes| No| Download paused due to unknown reasons.|
-| PAUSED_WAITING_FOR_NETWORK<sup>7+</sup> | number | Yes| No| Download paused due to a network connection problem, for example, network disconnection.|
-| PAUSED_WAITING_TO_RETRY<sup>7+</sup> | number | Yes| No| Download paused and then retried.|
-| SESSION_FAILED<sup>7+</sup> | number | Yes| No| Download failure without retry.|
-| SESSION_PAUSED<sup>7+</sup> | number | Yes| No| Download paused.|
-| SESSION_PENDING<sup>7+</sup> | number | Yes| No| Download pending.|
-| SESSION_RUNNING<sup>7+</sup> | number | Yes| No| Download in progress.|
-| SESSION_SUCCESSFUL<sup>7+</sup> | number | Yes| No| Successful download.|
+### Network Types
+You can set **networkType** in [DownloadConfig](#downloadconfig) to specify the network type for the download service.
+
+| Name| Type| Value| Description|
+| -------- | -------- | -------- | -------- |
+| NETWORK_MOBILE | number | 0x00000001 | Whether download is allowed on a mobile network.|
+| NETWORK_WIFI | number | 0x00010000 | Whether download is allowed on a WLAN.|
+
+### Download Error Codes
+The table below lists the error codes that may be returned by [on('fail')<sup>7+</sup>](#onfail7)/[off('fail')<sup>7+</sup>](#offfail7)/[getTaskInfo<sup>9+</sup>](#gettaskinfo9).
+
+| Name| Type| Value| Description|
+| -------- | -------- | -------- | -------- |
+| ERROR_CANNOT_RESUME<sup>7+</sup> | number |   0   | Failure to resume the download due to network errors.|
+| ERROR_DEVICE_NOT_FOUND<sup>7+</sup> | number |   1   | Failure to find a storage device such as a memory card.|
+| ERROR_FILE_ALREADY_EXISTS<sup>7+</sup> | number |   2   | Failure to download the file because it already exists.|
+| ERROR_FILE_ERROR<sup>7+</sup> | number |   3   | File operation failure.|
+| ERROR_HTTP_DATA_ERROR<sup>7+</sup> | number |   4   | HTTP transmission failure.|
+| ERROR_INSUFFICIENT_SPACE<sup>7+</sup> | number |   5   | Insufficient storage space.|
+| ERROR_TOO_MANY_REDIRECTS<sup>7+</sup> | number |   6   | Error caused by too many network redirections.|
+| ERROR_UNHANDLED_HTTP_CODE<sup>7+</sup> | number |   7   | Unidentified HTTP code.|
+| ERROR_UNKNOWN<sup>7+</sup> | number |   8   | Unknown error.|
+| ERROR_OFFLINE<sup>9+</sup> | number |   9   | No network connection.|
+| ERROR_UNSUPPORTED_NETWORK_TYPE<sup>9+</sup> | number |   10   | Network type mismatch.|
+
+
+### Causes of Download Pause
+The table below lists the causes of download pause that may be returned by [getTaskInfo<sup>9+</sup>](#gettaskinfo9).
+
+| Name| Type| Value| Description|
+| -------- | -------- | -------- | -------- |
+| PAUSED_QUEUED_FOR_WIFI<sup>7+</sup> | number |   0   | Download paused and queuing for a WLAN connection, because the file size exceeds the maximum value allowed by a mobile network session.|
+| PAUSED_WAITING_FOR_NETWORK<sup>7+</sup> | number |   1   | Download paused due to a network connection problem, for example, network disconnection.|
+| PAUSED_WAITING_TO_RETRY<sup>7+</sup> | number |   2   | Download paused and then retried.|
+| PAUSED_BY_USER<sup>9+</sup> | number |   3   | The user paused the session. |
+| PAUSED_UNKNOWN<sup>7+</sup> | number |   4   | Download paused due to unknown reasons.|
+
+### Download Task Status Codes
+The table below lists the download task status codes that may be returned by [getTaskInfo<sup>9+</sup>](#gettaskinfo9).
+
+| Name| Type| Value| Description|
+| -------- | -------- | -------- | -------- |
+| SESSION_SUCCESSFUL<sup>7+</sup> | number |   0   | Successful download.|
+| SESSION_RUNNING<sup>7+</sup> | number |   1   | Download in progress.|
+| SESSION_PENDING<sup>7+</sup> | number |   2   | Download pending.|
+| SESSION_PAUSED<sup>7+</sup> | number |   3   | Download paused.|
+| SESSION_FAILED<sup>7+</sup> | number |   4   | Download failure without retry.|
 
 
 ## request.uploadFile<sup>9+</sup>
@@ -112,11 +135,15 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.uploadFile(globalThis.abilityContext, uploadConfig).then((data) => {
+  try {
+    request.uploadFile(globalThis.abilityContext, uploadConfig).then((data) => {
       uploadTask = data;
-  }).catch((err) => {
-      console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
-  });
+    }).catch((err) => {
+        console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
+    });
+  } catch (err) {
+    console.error('err.code : ' + err.code + ', err.message : ' + err.message);
+  }
   ```
 
 
@@ -156,13 +183,17 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.uploadFile(globalThis.abilityContext, uploadConfig, (err, data) => {
+  try {
+    request.uploadFile(globalThis.abilityContext, uploadConfig, (err, data) => {
       if (err) {
           console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
           return;
       }
       uploadTask = data;
-  });
+    });
+  } catch (err) {
+    console.error('err.code : ' + err.code + ', err.message : ' + err.message);
+  }
   ```
 
 ## request.upload<sup>(deprecated)</sup>
@@ -348,8 +379,6 @@ Uploads files. This API uses an asynchronous callback to return the result.
 
 Implements file uploads. Before using any APIs of this class, you must obtain an **UploadTask** object through [request.uploadFile<sup>9+</sup>](#requestuploadfile9) in promise mode or [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1) in callback mode.
 
-
-
 ### on('progress')
 
 on(type: 'progress', callback:(uploadedSize: number, totalSize: number) =&gt; void): void
@@ -367,12 +396,12 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 | type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (upload progress).|
 | callback | function | Yes| Callback for the upload progress event.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| uploadedSize | number | Yes| Size of the uploaded files, in KB.|
-| totalSize | number | Yes| Total size of the files to upload, in KB.|
+| uploadedSize | number | Yes| Size of the uploaded files, in bytes. |
+| totalSize | number | Yes| Total size of the files to upload, in bytes. |
 
 **Example**
 
@@ -401,7 +430,7 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 | type | string | Yes| Type of the event to subscribe to. The value is **'headerReceive'** (response header).|
 | callback | function | Yes| Callback for the HTTP Response Header event.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -434,7 +463,7 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 | type | string | Yes| Type of the event to subscribe to. The value **'complete'** means the upload completion event, and **'fail'** means the upload failure event.|
 | callback | Callback&lt;Array&lt;TaskState&gt;&gt; | Yes| Callback used to return the result.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -476,12 +505,12 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 | type | string | Yes| Type of the event to unsubscribe from. The value is **'progress'** (upload progress).|
 | callback | function | No| Callback for the upload progress event.|
 
-  Parameters of the callback function
+ Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| uploadedSize | number | Yes| Size of the uploaded files, in KB.|
-| totalSize | number | Yes| Total size of the files to upload, in KB.|
+| uploadedSize | number | Yes| Size of the uploaded files, in bytes. |
+| totalSize | number | Yes| Total size of the files to upload, in bytes. |
 
 **Example**
 
@@ -510,7 +539,7 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 | type | string | Yes| Type of the event to unsubscribe from. The value is **'headerReceive'** (response header).|
 | callback | function | No| Callback for the HTTP Response Header event.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -542,7 +571,7 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 | type | string | Yes| Type of the event to subscribe to. The value **'complete'** means the upload completion event, and **'fail'** means the upload failure event.|
 | callback | Callback&lt;Array&lt;TaskState&gt;&gt; | No| Callback used to return the result.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -600,7 +629,7 @@ Deletes this upload task. This API uses a promise to return the result.
 
 delete(callback: AsyncCallback&lt;boolean&gt;): void
 
-Removes this upload task. This API uses an asynchronous callback to return the result. 
+Deletes this upload task. This API uses an asynchronous callback to return the result. 
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -787,11 +816,15 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
 
   ```js
   let downloadTask;
-  request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
-      downloadTask = data;
-  }).catch((err) => {
-      console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
-  })
+  try {
+    request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
+        downloadTask = data;
+    }).catch((err) => {
+        console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
+    })
+  } catch (err) {
+    console.error('err.code : ' + err.code + ', err.message : ' + err.message);
+  }
   ```
 
 
@@ -826,14 +859,18 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
 
   ```js
   let downloadTask;
-  request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxxx.hap', 
-  filePath: 'xxx/xxxxx.hap'}, (err, data) => {
-      if (err) {
-          console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
-          return;
-      }
-      downloadTask = data;
-  });
+  try {
+    request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxxx.hap', 
+    filePath: 'xxx/xxxxx.hap'}, (err, data) => {
+        if (err) {
+            console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
+            return;
+        }
+        downloadTask = data;
+    });
+  } catch (err) {
+    console.error('err.code : ' + err.code + ', err.message : ' + err.message);
+  }
   ```
 
 ## request.download<sup>(deprecated)</sup>
@@ -1015,8 +1052,8 @@ Subscribes to a download event. This API uses an asynchronous callback to return
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| receivedSize | number | Yes| Size of the downloaded files, in KB.|
-| totalSize | number | Yes| Total size of the files to download, in KB.|
+| receivedSize | number | Yes| Size of the downloaded files, in bytes. |
+| totalSize | number | Yes| Total size of the files to download, in bytes. |
 
 **Example**
 
@@ -1045,12 +1082,12 @@ Unsubscribes from a download event. This API uses an asynchronous callback to re
 | type | string | Yes| Type of the event to unsubscribe from. The value is **'progress'** (download progress).|
 | callback | function | No| Callback for the download progress event.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| receivedSize | number | Yes| Size of the downloaded files.|
-| totalSize | number | Yes| Total size of the files to download.|
+| receivedSize | number | Yes| Size of the downloaded files, in bytes. |
+| totalSize | number | Yes| Total size of the files to download, in bytes. |
 
 **Example**
 
@@ -1133,11 +1170,11 @@ Subscribes to the download task failure event. This API uses an asynchronous cal
 | type | string | Yes| Type of the event to subscribe to. The value is **'fail'** (download failure).|
 | callback | function | Yes| Callback for the download task failure event.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| err | number | Yes| Error code of the download failure. For details about the error codes, see [ERROR_*](#constants).|
+| err | number | Yes| Error code of the download failure. For details about the error codes, see [Download Error Codes](#download-error-codes).|
 
 **Example**
 
@@ -1166,11 +1203,11 @@ Unsubscribes from the download task failure event. This API uses an asynchronous
 | type | string | Yes| Type of the event to unsubscribe from. The value is **'fail'** (download failure).|
 | callback | function | No| Callback for the download task failure event.|
 
-  Parameters of the callback function
+Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| err | number | Yes| Error code of the download failure. For details about the error codes, see [ERROR_*](#constants).|
+| err | number | Yes| Error code of the download failure. For details about the error codes, see [Download Error Codes](#download-error-codes).|
 
 **Example**
 
@@ -1181,7 +1218,7 @@ Unsubscribes from the download task failure event. This API uses an asynchronous
   );
   ```
 
-  ### delete<sup>9+</sup>
+### delete<sup>9+</sup>
 
 delete(): Promise&lt;boolean&gt;
 
@@ -1249,7 +1286,7 @@ Removes this download task. This API uses an asynchronous callback to return the
 
 getTaskInfo(): Promise&lt;DownloadInfo&gt;
 
-Queries this download task. This API uses a promise to return the result.
+Obtains the information about this download task. This API uses a promise to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1276,7 +1313,7 @@ Queries this download task. This API uses a promise to return the result.
 
 getTaskInfo(callback: AsyncCallback&lt;DownloadInfo&gt;): void
 
-Queries this download task. This API uses an asynchronous callback to return the result.
+Obtains the information about this download task. This API uses an asynchronous callback to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1842,12 +1879,12 @@ Resumes this download task. This API uses an asynchronous callback to return the
 | -------- | -------- | -------- | -------- |
 | url | string | Yes| Resource URL.|
 | header | Object | No| HTTPS flag header to be included in the download request.<br>The **X-TLS-Version** parameter in **header** specifies the TLS version to be used. If this parameter is not set, the CURL_SSLVERSION_TLSv1_2 version is used. Available options are as follows:<br>CURL_SSLVERSION_TLSv1_0<br>CURL_SSLVERSION_TLSv1_1<br>CURL_SSLVERSION_TLSv1_2<br>CURL_SSLVERSION_TLSv1_3<br>The **X-Cipher-List** parameter in **header** specifies the cipher suite list to be used. If this parameter is not specified, the secure cipher suite list is used. Available options are as follows:<br>- The TLS 1.2 cipher suite list includes the following ciphers:<br>TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,<br>TLS_DHE_DSS_WITH_AES_128_GCM_SHA256,TLS_DSS_RSA_WITH_AES_256_GCM_SHA384,<br>TLS_PSK_WITH_AES_256_GCM_SHA384,TLS_DHE_PSK_WITH_AES_128_GCM_SHA256,<br>TLS_DHE_PSK_WITH_AES_256_GCM_SHA384,TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256,<br>TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,<br>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,<br>TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,<br>TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256,TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384,<br>TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256,TLS_DHE_RSA_WITH_AES_128_CCM,<br>TLS_DHE_RSA_WITH_AES_256_CCM,TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,<br>TLS_PSK_WITH_AES_256_CCM,TLS_DHE_PSK_WITH_AES_128_CCM,<br>TLS_DHE_PSK_WITH_AES_256_CCM,TLS_ECDHE_ECDSA_WITH_AES_128_CCM,<br>TLS_ECDHE_ECDSA_WITH_AES_256_CCM,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256<br>- The TLS 1.3 cipher suite list includes the following ciphers:<br>TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_AES_128_CCM_SHA256<br>- The TLS 1.3 cipher suite list adds the Chinese national cryptographic algorithm:<br>TLS_SM4_GCM_SM3,TLS_SM4_CCM_SM3 |
-| enableMetered | boolean | No| Whether download is allowed on a metered connection.<br>- **true**: yes<br>- **false**: no|
-| enableRoaming | boolean | No| Whether download is allowed on a roaming network.<br>- **true**: yes<br>- **false**: no|
+| enableMetered | boolean | No| Whether download is allowed on a metered connection.<br>- **true**: allowed<br>- **false**: not allowed |
+| enableRoaming | boolean | No| Whether download is allowed on a roaming network.<br>- **true**: allowed<br>- **false**: not allowed |
 | description | string | No| Description of the download session.|
-| filePath<sup>7+</sup> | string | No| Download path. (The default path is **'internal://cache/'**.)<br>- filePath:'workspace/test.txt': The **workspace** directory is created in the default path to store files.<br>- filePath:'test.txt': Files are stored in the default path.<br>- filePath:'workspace/': The **workspace** directory is created in the default path to store files.|
+| filePath<sup>7+</sup> | string | No| Path where the downloaded file is stored.<br>- filePath:'/data/storage/el2/base/haps/entry/files/test.txt': Save the file to an absolute path.<br>- In the FA model, use [context](js-apis-inner-app-context.md#contextgetcachedir) to obtain the cache directory of the application, for example, **'${featureAbility.getContext().getFilesDir()}/test.txt'**, and store the file in this directory.<br>- In the stage model, use [AbilityContext](js-apis-inner-application-context.md) to obtain the fie path, for example, **'${globalThis.abilityContext.tempDir}/test.txt'**, and store the file in this path.|
 | networkType | number | No| Network type allowed for download.<br>- NETWORK_MOBILE: 0x00000001<br>- NETWORK_WIFI: 0x00010000|
-| title | string | No| Title of the download session.|
+| title | string | No| Download task name.|
 | background<sup>9+</sup> | boolean | No| Whether to enable the background task notification. When this parameter is enabled, the download status is displayed in the notification panel.|
 
 
@@ -1860,13 +1897,13 @@ Resumes this download task. This API uses an asynchronous callback to return the
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | downloadId | number | Yes| ID of the downloaded file.|
-| failedReason | number | No| Download failure cause, which can be any constant of [ERROR_*](#constants).|
+| failedReason | number | No| Cause of the download failure. The value can be any constant in [Download Error Codes](#download-error-codes).|
 | fileName | string | Yes| Name of the downloaded file.|
 | filePath | string | Yes| URI of the saved file.|
-| pausedReason | number | No| Reason for session pause, which can be any constant of [PAUSED_*](#constants).|
-| status | number | Yes| Download status code, which can be any constant of [SESSION_*](#constants).|
+| pausedReason | number | No| Cause of download pause. The value can be any constant in [Causes of Download Pause](#causes-of-download-pause).|
+| status | number | Yes| Download task status code. The value can be any constant in [Download Task Status Codes](#download-task-status-codes).|
 | targetURI | string | Yes| URI of the downloaded file.|
-| downloadTitle | string | Yes| Title of the downloaded file.|
-| downloadTotalBytes | number | Yes| Total size of the files to download (int bytes).|
+| downloadTitle | string | Yes| Download task name.|
+| downloadTotalBytes | number | Yes| Total size of the files to download, in bytes.|
 | description | string | Yes| Description of the file to download.|
-| downloadedBytes | number | Yes| Size of the files downloaded (int bytes).|
+| downloadedBytes | number | Yes| Size of the files downloaded, in bytes.|
diff --git a/en/application-dev/reference/apis/js-apis-resource-manager.md b/en/application-dev/reference/apis/js-apis-resource-manager.md
index 8117cdd44862dc934a4022b6b701b9551cd6d25e..865f1104386664ce5b4cafede20ec54ffab711a6 100644
--- a/en/application-dev/reference/apis/js-apis-resource-manager.md
+++ b/en/application-dev/reference/apis/js-apis-resource-manager.md
@@ -15,8 +15,10 @@ import resourceManager from '@ohos.resourceManager';
 
 ## Instruction
 
-Since API version 9, the stage model allows an application to obtain a **ResourceManager** object based on **context** and call its resource management APIs without first importing the required bundle. This approach, however, is not applicable to the FA model.
-For details about how to reference **context** in the stage model, see [Context in the Stage Model].
+Since API version 9, the stage model allows an application to obtain a **ResourceManager** object based on **context** and call its resource management APIs without first importing the required bundle. This approach, however, is not applicable to the FA model. For the FA model, you need to import the required bundle and then call the [getResourceManager](#resourcemanagergetresourcemanager) API to obtain a **ResourceManager** object.
+
+For details about how to reference **context** in the stage model, see Context in the Stage Model.
+
 
 ```ts
 import Ability from '@ohos.application.Ability';
@@ -97,6 +99,7 @@ Obtains the **ResourceManager** object of this application. This API uses a prom
 **System capability**: SystemCapability.Global.ResourceManager
 
 **Return value**
+
 | Type                                      | Description               |
 | ---------------------------------------- | ----------------- |
 | Promise&lt;[ResourceManager](#resourcemanager)&gt; | Promise used to return the result.|
@@ -134,6 +137,7 @@ Obtains the **ResourceManager** object of an application based on the specified
 | bundleName | string | Yes   | Bundle name of the application.|
 
 **Return value**
+
 | Type                                      | Description                |
 | ---------------------------------------- | ------------------ |
 | Promise&lt;[ResourceManager](#resourcemanager)&gt; | Promise used to return the result.|
@@ -305,7 +309,7 @@ For details about the error codes, see [Resource Manager Error Codes](../errorco
 **Example (stage)**
   ```ts
     try {
-        this.context.getStringValue($r('app.string.test').id, (error, value) => {
+        this.context.resourceManager.getStringValue($r('app.string.test').id, (error, value) => {
           if (error != null) {
               console.log("error is " + error);
           } else {
@@ -333,6 +337,7 @@ Obtains the string corresponding to the specified resource ID. This API uses a p
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                   | Description         |
 | --------------------- | ----------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -423,6 +428,7 @@ Obtains the string corresponding to the specified resource object. This API uses
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type                   | Description              |
 | --------------------- | ---------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -512,6 +518,7 @@ Obtains the string array corresponding to the specified resource ID. This API us
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                                | Description           |
 | ---------------------------------- | ------------- |
 | Promise&lt;Array&lt;string&gt;&gt; | Promise used to return the result.|
@@ -599,6 +606,7 @@ Obtains the string array corresponding to the specified resource object. This AP
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type                                | Description                |
 | ---------------------------------- | ------------------ |
 | Promise&lt;Array&lt;string&gt;&gt; | Promise used to return the result.|
@@ -687,6 +695,7 @@ Obtains the content of the media file corresponding to the specified resource ID
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                       | Description            |
 | ------------------------- | -------------- |
 | Promise&lt;Uint8Array&gt; | Promise used to return the result.|
@@ -772,6 +781,7 @@ Obtains the content of the media file corresponding to the specified resource ob
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type                       | Description                 |
 | ------------------------- | ------------------- |
 | Promise&lt;Uint8Array&gt; | Promise used to return the result.|
@@ -859,6 +869,7 @@ Obtains the Base64 code of the image corresponding to the specified resource ID.
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                   | Description                  |
 | --------------------- | -------------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -944,6 +955,7 @@ Obtains the Base64 code of the image corresponding to the specified resource obj
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type                   | Description                       |
 | --------------------- | ------------------------- |
 | Promise&lt;string&gt; |  Promise used to return the result.|
@@ -1014,6 +1026,7 @@ Obtains the device configuration. This API uses a promise to return the result.
 **System capability**: SystemCapability.Global.ResourceManager
 
 **Return value**
+
 | Type                                      | Description              |
 | ---------------------------------------- | ---------------- |
 | Promise&lt;[Configuration](#configuration)&gt; | Promise used to return the result.|
@@ -1069,6 +1082,7 @@ Obtains the device capability. This API uses a promise to return the result.
 **System capability**: SystemCapability.Global.ResourceManager
 
 **Return value**
+
 | Type                                      | Description                 |
 | ---------------------------------------- | ------------------- |
 | Promise&lt;[DeviceCapability](#devicecapability)&gt; | Promise used to return the result.|
@@ -1144,6 +1158,7 @@ Obtains the singular-plural string corresponding to the specified resource ID ba
 | num   | number | Yes   | Number.  |
 
 **Return value**
+
 | Type                   | Description                       |
 | --------------------- | ------------------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -1234,6 +1249,7 @@ Obtains the singular-plural string corresponding to the specified resource objec
 | num      | number                 | Yes   | Number. |
 
 **Return value**
+
 | Type                   | Description                            |
 | --------------------- | ------------------------------ |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -1321,6 +1337,7 @@ Obtains the content of the raw file in the **resources/rawfile** directory. This
 | path | string | Yes   | Path of the raw file.|
 
 **Return value**
+
 | Type                       | Description         |
 | ------------------------- | ----------- |
 | Promise&lt;Uint8Array&gt; | Promise used to return the result.|
@@ -1402,6 +1419,7 @@ Obtains the descriptor of the raw file in the **resources/rawfile** directory. T
 | path | string | Yes   | Path of the raw file.|
 
 **Return value**
+
 | Type                                      | Description                 |
 | ---------------------------------------- | ------------------- |
 | Promise&lt;[RawFileDescriptor](#rawfiledescriptor8)&gt; | Promise used to return the result.|
@@ -1470,6 +1488,7 @@ Closes the descriptor of the raw file in the **resources/rawfile** directory. Th
 | path | string | Yes   | Path of the raw file.|
 
 **Return value**
+
 | Type                 | Description  |
 | ------------------- | ---- |
 | Promise&lt;void&gt; | Promise that returns no value.|
@@ -1538,6 +1557,7 @@ Closes the descriptor of the raw file in the **resources/rawfile** directory. Th
 | path | string | Yes   | Path of the raw file.|
 
 **Return value**
+
 | Type                 | Description  |
 | ------------------- | ---- |
 | Promise&lt;void&gt; | Promise that returns no value.|
@@ -1634,6 +1654,7 @@ Obtains the string corresponding to the specified resource name. This API uses a
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type                   | Description        |
 | --------------------- | ---------- |
 | Promise&lt;string&gt; | String corresponding to the resource name.|
@@ -1716,6 +1737,7 @@ Obtains the string array corresponding to the specified resource name. This API
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type                                | Description          |
 | ---------------------------------- | ------------ |
 | Promise&lt;Array&lt;string&gt;&gt; | Promise used to return the result.|
@@ -1798,6 +1820,7 @@ Obtains the content of the media file corresponding to the specified resource na
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type                       | Description           |
 | ------------------------- | ------------- |
 | Promise&lt;Uint8Array&gt; | Promise used to return the result.|
@@ -1880,6 +1903,7 @@ Obtains the Base64 code of the image corresponding to the specified resource nam
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type                   | Description                 |
 | --------------------- | ------------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -1965,6 +1989,7 @@ Obtains the plural string corresponding to the specified resource name based on
 | num     | number | Yes   | Number. |
 
 **Return value**
+
 | Type                   | Description                    |
 | --------------------- | ---------------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -2007,6 +2032,7 @@ Obtains the string corresponding to the specified resource ID. This API returns
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type    | Description         |
 | ------ | ----------- |
 | string | Promise used to return the result.|
@@ -2045,6 +2071,7 @@ Obtains the string corresponding to the specified resource object. This API retu
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type    | Description              |
 | ------ | ---------------- |
 | string | Promise used to return the result.|
@@ -2088,6 +2115,7 @@ Obtains the string corresponding to the specified resource name. This API return
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type    | Description        |
 | ------ | ---------- |
 | string | String corresponding to the specified resource name.|
@@ -2126,6 +2154,7 @@ Obtains the Boolean result corresponding to the specified resource ID. This API
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type     | Description          |
 | ------- | ------------ |
 | boolean | Boolean result corresponding to the specified resource ID.|
@@ -2163,6 +2192,7 @@ Obtains the Boolean result corresponding to the specified resource object. This
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type     | Description               |
 | ------- | ----------------- |
 | boolean | Boolean result corresponding to the specified resource object.|
@@ -2206,6 +2236,7 @@ Obtains the Boolean result corresponding to the specified resource name. This AP
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type     | Description         |
 | ------- | ----------- |
 | boolean | Boolean result corresponding to the specified resource name.|
@@ -2244,6 +2275,7 @@ Obtains the integer or float value corresponding to the specified resource ID. T
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type    | Description        |
 | ------ | ---------- |
 | number | Integer or float value corresponding to the specified resource ID.|
@@ -2288,6 +2320,7 @@ Obtains the integer or float value corresponding to the specified resource objec
 | resource | [Resource](#resource9) | Yes   | Resource object.|
 
 **Return value**
+
 | Type    | Description             |
 | ------ | --------------- |
 | number | Integer or float value corresponding to the specified resource object.|
@@ -2331,6 +2364,7 @@ Obtains the integer or float value corresponding to the specified resource name.
 | resName | string | Yes   | Resource name.|
 
 **Return value**
+
 | Type    | Description       |
 | ------ | --------- |
 | number | Integer or float value corresponding to the specified resource name.|
@@ -2409,6 +2443,7 @@ This API is deprecated since API version 9. You are advised to use [getStringVal
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                   | Description         |
 | --------------------- | ----------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -2473,6 +2508,7 @@ This API is deprecated since API version 9. You are advised to use [getStringArr
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                                | Description           |
 | ---------------------------------- | ------------- |
 | Promise&lt;Array&lt;string&gt;&gt; | Promise used to return the result.|
@@ -2495,7 +2531,7 @@ getMedia(resId: number, callback: AsyncCallback&lt;Uint8Array&gt;): void
 
 Obtains the content of the media file corresponding to the specified resource ID. This API uses an asynchronous callback to return the result.
 
-This API is deprecated since API version 9. You are advised to use [getMediaContent](#getmediacontent) instead.
+This API is deprecated since API version 9. You are advised to use [getMediaContent](#getmediacontent9) instead.
 
 **System capability**: SystemCapability.Global.ResourceManager
 
@@ -2526,7 +2562,7 @@ getMedia(resId: number): Promise&lt;Uint8Array&gt;
 
 Obtains the content of the media file corresponding to the specified resource ID. This API uses a promise to return the result.
 
-This API is deprecated since API version 9. You are advised to use [getMediaContent](#getmediacontent-1) instead.
+This API is deprecated since API version 9. You are advised to use [getMediaContent](#getmediacontent9-1) instead.
 
 **System capability**: SystemCapability.Global.ResourceManager
 
@@ -2537,6 +2573,7 @@ This API is deprecated since API version 9. You are advised to use [getMediaCont
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                       | Description            |
 | ------------------------- | -------------- |
 | Promise&lt;Uint8Array&gt; | Promise used to return the result.|
@@ -2559,7 +2596,7 @@ getMediaBase64(resId: number, callback: AsyncCallback&lt;string&gt;): void
 
 Obtains the Base64 code of the image corresponding to the specified resource ID. This API uses an asynchronous callback to return the result.
 
-This API is deprecated since API version 9. You are advised to use [getMediaContentBase64](#getmediacontentbase64) instead.
+This API is deprecated since API version 9. You are advised to use [getMediaContentBase64](#getmediacontentbase649) instead.
 
 **System capability**: SystemCapability.Global.ResourceManager
 
@@ -2590,7 +2627,7 @@ getMediaBase64(resId: number): Promise&lt;string&gt;
 
 Obtains the Base64 code of the image corresponding to the specified resource ID. This API uses a promise to return the result.
 
-This API is deprecated since API version 9. You are advised to use [getMediaContentBase64](#getmediacontentbase64-1) instead.
+This API is deprecated since API version 9. You are advised to use [getMediaContentBase64](#getmediacontentbase649-1) instead.
 
 **System capability**: SystemCapability.Global.ResourceManager
 
@@ -2601,6 +2638,7 @@ This API is deprecated since API version 9. You are advised to use [getMediaCont
 | resId | number | Yes   | Resource ID.|
 
 **Return value**
+
 | Type                   | Description                  |
 | --------------------- | -------------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -2623,7 +2661,7 @@ getPluralString(resId: number, num: number): Promise&lt;string&gt;
 
 Obtains the singular-plural string corresponding to the specified resource ID based on the specified number. This API uses a promise to return the result.
 
-This API is deprecated since API version 9. You are advised to use [getPluralStringValue](#getpluralstringvalue) instead.
+This API is deprecated since API version 9. You are advised to use [getPluralStringValue](#getpluralstringvalue9) instead.
 
 **System capability**: SystemCapability.Global.ResourceManager
 
@@ -2635,6 +2673,7 @@ This API is deprecated since API version 9. You are advised to use [getPluralStr
 | num   | number | Yes   | Number.  |
 
 **Return value**
+
 | Type                   | Description                       |
 | --------------------- | ------------------------- |
 | Promise&lt;string&gt; | Promise used to return the result.|
@@ -2657,7 +2696,7 @@ getPluralString(resId: number, num: number, callback: AsyncCallback&lt;string&gt
 
 Obtains the singular-plural string corresponding to the specified resource ID based on the specified number. This API uses an asynchronous callback to return the result.
 
-This API is deprecated since API version 9. You are advised to use [getPluralStringValue](#getpluralstringvalue-1) instead.
+This API is deprecated since API version 9. You are advised to use [getPluralStringValue](#getpluralstringvalue9-1) instead.
 
 **System capability**: SystemCapability.Global.ResourceManager
 
@@ -2731,6 +2770,7 @@ This API is deprecated since API version 9. You are advised to use [getRawFileCo
 | path | string | Yes   | Path of the raw file.|
 
 **Return value**
+
 | Type                       | Description         |
 | ------------------------- | ----------- |
 | Promise&lt;Uint8Array&gt; | Promise used to return the result.|
@@ -2796,6 +2836,7 @@ This API is deprecated since API version 9. You are advised to use [getRawFd](#g
 | path | string | Yes   | Path of the raw file.|
 
 **Return value**
+
 | Type                                      | Description                 |
 | ---------------------------------------- | ------------------- |
 | Promise&lt;[RawFileDescriptor](#rawfiledescriptor8)&gt; | Promise used to return the result.|
diff --git a/en/application-dev/reference/apis/js-apis-sim.md b/en/application-dev/reference/apis/js-apis-sim.md
index b0915951260105661f35dcad54468e2417962e89..7c415cc718aa72b7d1d098483a73399fc431d7af 100644
--- a/en/application-dev/reference/apis/js-apis-sim.md
+++ b/en/application-dev/reference/apis/js-apis-sim.md
@@ -2847,10 +2847,10 @@ Defines the lock status response.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name           | Type  | Description              |
-| --------------- | ------ | ------------------ |
-| result          | number | Operation result.    |
-| remain?: number | number | Remaining attempts (can be null).|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| result          | number | Yes | Operation result.    |
+| remain?: number | number | Yes | Remaining attempts (can be null).|
 
 ## LockInfo<sup>8+</sup>
 
@@ -2860,11 +2860,11 @@ Defines the lock information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name    | Type                    | Description  |
-| -------- | ------------------------ | ------ |
-| lockType | [LockType](#locktype8)   | Lock type.|
-| password | string                   | Password.  |
-| state    | [LockState](#lockstate8) | Lock state.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| lockType | [LockType](#locktype8)   | Yes | Lock type.|
+| password | string                   | Yes | Password.  |
+| state    | [LockState](#lockstate8) | Yes | Lock state.|
 
 ## PersoLockInfo<sup>8+</sup>
 
@@ -2874,10 +2874,10 @@ Defines the personalized lock information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name    | Type                            | Description        |
-| -------- | -------------------------------- | ------------ |
-| lockType | [PersoLockType](#persolocktype8) | Personalized lock type.|
-| password | string                           | Password.        |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| lockType | [PersoLockType](#persolocktype8) | Yes | Personalized lock type.|
+| password | string                           | Yes | Password.        |
 
 ## IccAccountInfo<sup>7+</sup>
 
@@ -2887,15 +2887,15 @@ Defines the ICC account information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name      | Type   | Description            |
-| ---------- | ------- | ---------------- |
-| simId      | number  | SIM card ID.         |
-| slotIndex  | number  | Card slot ID.          |
-| isEsim     | boolean | Whether the SIM card is an eSim card.|
-| isActive   | boolean | Whether the card is activated.    |
-| iccId      | string  | ICCID number.       |
-| showName   | string  | SIM card display name.   |
-| showNumber | string  | SIM card display number.   |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| simId      | number  | Yes | SIM card ID.         |
+| slotIndex  | number  | Yes | Card slot ID.          |
+| isEsim     | boolean | Yes | Whether the SIM card is an eSim card.|
+| isActive   | boolean | Yes | Whether the card is activated.    |
+| iccId      | string  | Yes | ICCID number.       |
+| showName   | string  | Yes | SIM card display name.   |
+| showNumber | string  | Yes | SIM card display number.   |
 
 ## OperatorConfig<sup>8+</sup>
 
@@ -2905,10 +2905,10 @@ Defines the carrier configuration.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name | Type  | Description|
-| ----- | ------ | ---- |
-| field | string | Field|
-| value | string | Value  |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| field | string | Yes | Field. |
+| value | string | Yes | Value. |
 
 ## DiallingNumbersInfo<sup>8+</sup>
 
@@ -2918,12 +2918,12 @@ Defines the contact number information.
 
 **System capability**: SystemCapability.Telephony.CoreService
 
-| Name        | Type  | Description    |
-| ------------ | ------ | -------- |
-| alphaTag     | string | Alpha tag.    |
-| number       | string | Contact number.    |
-| recordNumber | number | Record number.|
-| pin2         | string | PIN 2.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| alphaTag     | string | Yes | Alpha tag.    |
+| number       | string | Yes | Contact number.    |
+| recordNumber | number | Yes | Record number.|
+| pin2         | string | Yes | PIN 2.|
 
 ## ContactType<sup>8+</sup>
 
diff --git a/en/application-dev/reference/apis/js-apis-sms.md b/en/application-dev/reference/apis/js-apis-sms.md
index 7d372978202503f6ed0a0517fa69f85ae5dfcf44..e9e32416426bf852590ed7d7a7f9c5e086a89480 100644
--- a/en/application-dev/reference/apis/js-apis-sms.md
+++ b/en/application-dev/reference/apis/js-apis-sms.md
@@ -1116,19 +1116,19 @@ Defines an SMS message instance.
 
 **System capability**: SystemCapability.Telephony.SmsMms
 
-| Name                  | Type                                   | Description                                                        |
-| ------------------------ | --------------------------------------- | ------------------------------------------------------------ |
-| hasReplyPath             | boolean                                 | Whether the received SMS contains **TP-Reply-Path**. The default value is **false**.<br>**TP-Reply-Path**: The device returns a response based on the SMSC that sends the SMS message.|
-| isReplaceMessage         | boolean                                 | Whether the received SMS message is a **replace short message**. The default value is **false**.<br>For details, see section 9.2.3.9 in **3GPP TS 23.040**.|
-| isSmsStatusReportMessage | boolean                                 | Whether the received SMS message is an SMS delivery status report. The default value is **false**.<br>**SMS-Status-Report**: a message sent from the SMSC to the mobile station to show the SMS message delivery status.|
-| messageClass             | [ShortMessageClass](#shortmessageclass) | Enumerates SMS message types.                                                  |
-| pdu                      | Array&lt;number&gt;                     | PDU in the SMS message.                           |
-| protocolId               | number                                  | Protocol identifier used for delivering the SMS message.                                  |
-| scAddress                | string                                  | SMSC address.                                |
-| scTimestamp              | number                                  | SMSC timestamp.                                                |
-| status                   | number                                  | SMS message status sent by the SMSC in the **SMS-STATUS-REPORT** message.|
-| visibleMessageBody       | string                                  | SMS message body.                                                  |
-| visibleRawAddress        | string                                  | Sender address.                                                |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| hasReplyPath             | boolean                                 | Yes |Whether the received SMS contains **TP-Reply-Path**. The default value is **false**.<br>**TP-Reply-Path**: The device returns a response based on the SMSC that sends the SMS message.|
+| isReplaceMessage         | boolean                                 | Yes |Whether the received SMS message is a **replace short message**. The default value is **false**.<br>For details, see section 9.2.3.9 in **3GPP TS 23.040**.|
+| isSmsStatusReportMessage | boolean                                 | Yes |Whether the received SMS message is an SMS delivery status report. The default value is **false**.<br>**SMS-Status-Report**: a message sent from the SMSC to the mobile station to show the SMS message delivery status.|
+| messageClass             | [ShortMessageClass](#shortmessageclass) | Yes | SMS message type.                                                  |
+| pdu                      | Array&lt;number&gt;                     | Yes | PDU in the SMS message.                           |
+| protocolId               | number                                  | Yes | Protocol identifier used for delivering the SMS message.            |
+| scAddress                | string                                  | Yes | SMSC address.                                |
+| scTimestamp              | number                                  | Yes | SMSC timestamp.                                                |
+| status                   | number                                  | Yes | SMS message status sent by the SMSC in the **SMS-STATUS-REPORT** message.|
+| visibleMessageBody       | string                                  | Yes | SMS message body.                                                  |
+| visibleRawAddress        | string                                  | Yes | Sender address.                                                |
 
 
 ## ShortMessageClass
diff --git a/en/application-dev/reference/apis/js-apis-system-notification.md b/en/application-dev/reference/apis/js-apis-system-notification.md
index 0a46cec929810e8f485a66b26445f1e3042b7672..608bb4d3d3ee2ec6d4c48e7d9b7a4abd01e52c2e 100644
--- a/en/application-dev/reference/apis/js-apis-system-notification.md
+++ b/en/application-dev/reference/apis/js-apis-system-notification.md
@@ -1,7 +1,6 @@
-# Notification
+# @system.notification
 
 > **NOTE**
-> 
 > - The APIs of this module are no longer maintained since API version 7. You are advised to use [`@ohos.notification`](js-apis-notification.md).
 > 
 > - The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
@@ -18,22 +17,22 @@ import notification from '@system.notification';
 
 **System capability**: SystemCapability.Notification.Notification
 
-| Name       | Readable| Writable| Type                                          | Mandatory| Description                     |
-| ----------- | --- | ---- | ---------------------------------------------- | ---- | ------------------------- |
-| bundleName  | Yes | Yes | string                                          | Yes  | Name of the application bundle to which the notification will be redirected after being clicked.                 |
-| abilityName | Yes | Yes | string                                          | Yes  | Name of the application ability to which the notification will be redirected after being clicked.|
-| uri         | Yes | Yes | string                                          | No  | URI of the page to be redirected to.             |
+| Name       | Type                                          | Readable                                        | Writable                                        | Mandatory| Description                     |
+| ----------- | ---------------------------------------------- | ---- | ------------------------- | ------------------------- | ------------------------- |
+| bundleName  | string                                          | Yes                                        | Yes                                        | Yes  | Name of the application bundle to which the notification will be redirected after being clicked.                 |
+| abilityName | string                                          | Yes                                        | Yes                                        | Yes  | Name of the application ability to which the notification will be redirected after being clicked.|
+| uri         | string                                          | Yes                                        | Yes                                        | No  | URI of the page to be redirected to.             |
 
 
 ## ShowNotificationOptions
 
 **System capability**: SystemCapability.Notification.Notification
 
-| Name         | Readable| Writable| Type                                          | Mandatory| Description                       |
-| ------------- | --- | ---- | ---------------------------------------------- | ---- | ------------------------- |
-| contentTitle  | Yes | Yes | string                                          | No  | Notification title.                 |
-| contentText   | Yes | Yes | string                                          | No  | Notification content.                 |
-| clickAction   | Yes | Yes | ActionResult                                    | No  | Action triggered when the notification is clicked.    |
+| Name         | Type                                          | Readable                                        | Writable                                        | Mandatory| Description                       |
+| ------------- | ---------------------------------------------- | ---- | ------------------------- | ------------------------- | ------------------------- |
+| contentTitle  | string                                          | Yes                                        | Yes                                        | No  | Notification title.                 |
+| contentText   | string                                          | Yes                                        | Yes                                        | No  | Notification content.                 |
+| clickAction   | ActionResult                                    | Yes                                  | Yes                                  | No  | Action triggered when the notification is clicked.    |
 
 
 ## notification.show
diff --git a/en/application-dev/reference/apis/js-apis-system-request.md b/en/application-dev/reference/apis/js-apis-system-request.md
index 18b94b676942abb856fa9bd709c1898a6f98588d..a2b939bf7d0983a25202fe11b7c5dd4ddd9d3665 100644
--- a/en/application-dev/reference/apis/js-apis-system-request.md
+++ b/en/application-dev/reference/apis/js-apis-system-request.md
@@ -1,9 +1,11 @@
-# Uploading and Downloading
+# @system.request
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **Note：**
-> - The APIs of this module are no longer maintained since API version 6. It is recommended that you use [`@ohos.request`](js-apis-request.md) instead.
+The **system.request** module provides applications with basic upload and download capabilities.
+
+> **NOTE**
+> - The APIs of this module are deprecated since API version 9. You are advised to use [`@ohos.request`](js-apis-request.md) instead.
 > 
-> - The initial APIs of this module are supported since API version 4. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+> - The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
 ## Modules to Import
@@ -13,179 +15,245 @@
 import request from '@system.request';
 ```
 
-## Required Permissions
+## request.upload
 
-ohos.permission.INTERNET.
+upload(options: UploadRequestOptions): void
 
+Uploads a file. This API returns no value.
 
-## request.upload
+**System capability**: SystemCapability.MiscServices.Upload
 
-upload(Object): void
+**Parameters**
 
-Uploads files.
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | options | [UploadRequestOptions](#uploadrequestoptions) | Yes| Upload configurations.|
 
-**Parameters**
+**Example**
 
-| Name | Type | Mandatory | Description |
-| -------- | -------- | -------- | -------- |
-| url | string | Yes | URL&nbsp;of&nbsp;the&nbsp;upload&nbsp;server. |
-| header | Object | No | Request&nbsp;header. |
-| method | string | No | Request&nbsp;methods&nbsp;available:&nbsp;**POST**&nbsp;and&nbsp;**PUT**.&nbsp;The&nbsp;default&nbsp;value&nbsp;is&nbsp;**POST**. |
-| files | Array&lt;File&gt; | Yes | List&nbsp;of&nbsp;files&nbsp;to&nbsp;upload,&nbsp;which&nbsp;is&nbsp;submitted&nbsp;through&nbsp;**multipart/form-data**. |
-| data | Array&lt;RequestData&gt; | No | Form&nbsp;data&nbsp;in&nbsp;the&nbsp;request&nbsp;body. |
-| success | Function | No | Called&nbsp;when&nbsp;the&nbsp;download&nbsp;task&nbsp;is&nbsp;complete. |
-| fail | Function | No | Called&nbsp;when&nbsp;downloading&nbsp;fails&nbsp;or&nbsp;the&nbsp;task&nbsp;does&nbsp;not&nbsp;exist. |
-| complete | Function | No | Called&nbsp;when&nbsp;the&nbsp;execution&nbsp;is&nbsp;complete. |
+  ```js
+  let uploadRequestOptions = {
+    url: 'http://www.path.com',
+    method: 'POST',
+    files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
+    data: [{ name: "name123", value: "123" }],
+    success: function(data) {
+      console.info(' upload success, code:' + JSON.stringify(data));
+    },
+    fail: function(data, code) {
+      console.info(' upload fail data: ' + data + 'code: ' + code);
+    },
+    complete: function (){
+      console.info(' upload complete');
+    }
+  }
+  try {
+    request.upload(uploadRequestOptions);
+    console.info('upload start ');
+  } catch(err) {
+    console.info(' upload err:' + err);
+  }
+  ```
 
-**Table 1** File
 
-| Name | Type | Mandatory | Description |
-| -------- | -------- | -------- | -------- |
-| filename | string | No | File&nbsp;name&nbsp;in&nbsp;the&nbsp;header&nbsp;when&nbsp;**multipart**&nbsp;is&nbsp;used. |
-| name | string | No | Name&nbsp;of&nbsp;a&nbsp;form&nbsp;item&nbsp;when&nbsp;**multipart**&nbsp;is&nbsp;used.&nbsp;The&nbsp;default&nbsp;value&nbsp;is&nbsp;**file**. |
-| uri | string | Yes | Local&nbsp;storage&nbsp;path&nbsp;of&nbsp;a&nbsp;file. |
-| type | string | No | Type&nbsp;of&nbsp;the&nbsp;file&nbsp;content.&nbsp;By&nbsp;default,&nbsp;the&nbsp;type&nbsp;is&nbsp;obtained&nbsp;based&nbsp;on&nbsp;the&nbsp;suffix&nbsp;of&nbsp;the&nbsp;file&nbsp;name&nbsp;or&nbsp;URI. |
+## UploadRequestOptions
 
-**Table 2** RequestData
+**System capability**: SystemCapability.MiscServices.Upload
 
-| Name | Type | Mandatory | Description |
-| -------- | -------- | -------- | -------- |
-| name | string | Yes | Name&nbsp;of&nbsp;the&nbsp;form&nbsp;element |
-| value | string | Yes | Value&nbsp;of&nbsp;the&nbsp;form&nbsp;element |
 
-When the files are successfully uploaded, the following values will be returned.
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | url | string | Yes| URL of the upload server.|
+  | data | Array&lt;[RequestData](#requestdata)&gt; | No| Form data in the request body.|
+  | files | Array&lt;[RequestFile](#requestfile)&gt; | Yes| List of files to upload, which is submitted through **multipart/form-data**.|
+  | header | Object | No| Request header.|
+  | method | string | No| Request method, which can be **'POST'** or **'PUT'**. The default value is **POST**.|
+  | success | Function | No| Called when API call is successful.|
+  | fail | Function | No| Called when API call has failed.|
+  | complete | Function | No| Called when API call is complete.|
 
-| Name | Type | Description |
-| -------- | -------- | -------- |
-| code | number | HTTP&nbsp;status&nbsp;code&nbsp;returned&nbsp;by&nbsp;the&nbsp;server. |
-| data | string | Content&nbsp;returned&nbsp;by&nbsp;the&nbsp;server.&nbsp;The&nbsp;value&nbsp;type&nbsp;is&nbsp;determined&nbsp;by&nbsp;the&nbsp;type&nbsp;in&nbsp;the&nbsp;returned&nbsp;headers. |
-| headers | Object | Headers&nbsp;returned&nbsp;by&nbsp;the&nbsp;server. |
+**success parameter**
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | data | [UploadResponse](#uploadresponse) | Yes| Information returned when the upload task is successful.|
 
-When the files fail to be uploaded, an HTTP status code is returned in **code** of **data**.
+**fail parameters**
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | data | any | Yes| Header information returned when the upload task fails.|
+  | code | number | Yes| HTTP status code returned when the upload task fails.|
 
-**Example**
 
-```
-export default {    
-  upLoad() {
-    request.upload({
-      url: 'http://www.path.com',
-      files: [
-        {
-           uri: 'internal://cache/path/to/file.txt',
-           name: 'file',
-           filename: 'file.txt',
-        },
-      ],
-      data:[
-        {
-          name: 'name1',
-          value: 'value',
-         },
-       ],
-       success: function(data) {
-         console.log('upload success, code:' + data.code);
-       },
-       fail: function() {
-         console.log('upload fail');
-       },
-     });
-  }
-}
-```
 
+## UploadResponse
 
-## request.download
+**System capability**: SystemCapability.MiscServices.Upload
 
-download(Object): void
+  | Name| Type| Description|
+  | -------- | -------- | -------- |
+  | code | number | HTTP status code returned by the server.|
+  | data | string | Content returned by the server. The value type is determined by the type in the returned headers.|
+  | headers | Object | Headers returned by the server.|
 
-Downloads files.
 
-**Parameters**
+## RequestFile
+
+**System capability**: SystemCapability.MiscServices.Upload
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | filename | string | No| File name in the header when **multipart** is used.|
+  | name | string | No| Name of a form item when **multipart** is used. The default value is **file**.|
+  | uri | string | Yes| Local path for storing files.|
+  | type | string | No| Type of the file content. By default, the type is obtained based on the extension of the file name or URI.|
+
+
+## RequestData
+
+**System capability**: SystemCapability.MiscServices.Upload
 
-| Name | Type | Mandatory | Description |
-| -------- | -------- | -------- | -------- |
-| url | string | Yes | Resource&nbsp;URL. |
-| header | Object | No | Request&nbsp;header. |
-| description | string | No | Download&nbsp;description.&nbsp;The&nbsp;default&nbsp;value&nbsp;is&nbsp;the&nbsp;file&nbsp;name. |
-| filename | string | No | Name&nbsp;of&nbsp;the&nbsp;file&nbsp;to&nbsp;download.&nbsp;The&nbsp;value&nbsp;is&nbsp;obtained&nbsp;from&nbsp;the&nbsp;current&nbsp;request&nbsp;or&nbsp;resource&nbsp;URL&nbsp;by&nbsp;default. |
-| success | Function | No | Called&nbsp;when&nbsp;the&nbsp;download&nbsp;task&nbsp;is&nbsp;complete. |
-| fail | Function | No | Called&nbsp;when&nbsp;downloading&nbsp;fails&nbsp;or&nbsp;the&nbsp;task&nbsp;does&nbsp;not&nbsp;exist. |
-| complete | Function | No | Called&nbsp;when&nbsp;the&nbsp;execution&nbsp;is&nbsp;complete. |
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | name | string | Yes| Name of the form element.|
+  | value | string | Yes| Value of the form element.|
 
-Return values of the **success** callback
 
-| Name | Type | Description |
-| -------- | -------- | -------- |
-| token | string | Download&nbsp;token,&nbsp;which&nbsp;is&nbsp;used&nbsp;to&nbsp;obtain&nbsp;the&nbsp;download&nbsp;status. |
 
-One of the following error codes will be returned if the operation fails.
+## request.download
+
+download(options: DownloadRequestOptions): void
+
+Downloads a file. This API returns no value.
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
 
-| Error&nbsp;Code | Description |
-| -------- | -------- |
-| 400 | Download&nbsp;task&nbsp;failed |
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | options | [DownloadRequestOptions](#downloadrequestoptions) | Yes| Download configurations.|
 
 **Example**
 
-```
-export default {    
-  downLoad() {        
-    request.download({            
-      url: 'http://www.path.com',            
-      success: function(data) {                
-        console.log('call success callback success: ' + data.token);            
-      },            
-      fail: function(data, code) {                
-        console.log('handling fail');            
-      },        
-    });    
+  ```js
+  let downloadRequestOptions = {
+    url: 'http://www.path.com',
+    filename: 'requestSystenTest',
+    header: '',
+    description: 'this is requeSystem download response',
+    success: function(data) {
+      console.info(' download success, code:' + JSON.stringify(data));
+    },
+    fail: function(data, code) {
+      console.info(' download fail data: ' + data + 'code: ' + code);
+    },
+    complete: function (){
+      console.info(' download complete');
+    }
   }
-}
-```
+  try {
+    request.download(downloadRequestOptions);
+    console.info('download start ');
+  } catch(err) {
+    console.info(' download err:' + err);
+  }
+  ```
 
 
-## request.onDownloadComplete
+## DownloadRequestOptions
 
-onDownloadComplete(Object): void
+**System capability**: SystemCapability.MiscServices.Download
 
-Listens to download task status.
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | url | string | Yes| Resource URL.|
+  | filename | string | No| Name of the file to download. The value is obtained from the current request or resource URL by default.|
+  | header | Object | No| Request header.|
+  | description | string | No| Download description. The default value is the file name.|
+  | success | Function | No| Called when API call is successful.|
+  | fail | Function | No| Called when API call has failed.|
+  | complete | Function | No| Called when API call is complete.|
 
-**Parameters**
+**success parameter**
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | data | [DownloadResponse](#downloadresponse) | Yes| Information returned when the download task is successful.|
+
+**fail parameters**
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | data | any | Yes| Header information returned when the download task fails.|
+  | code | number | Yes| HTTP status code returned when the download task fails.|
+
+## DownloadResponse
+
+**System capability**: SystemCapability.MiscServices.Download
+
+  | Name| Type| Description|
+  | -------- | -------- | -------- |
+  | token | string | Download token, which is used to obtain the download status|
+
+
+## request.onDownloadComplete
 
-| Name | Type | Mandatory | Description |
-| -------- | -------- | -------- | -------- |
-| token | string | Yes | Token&nbsp;of&nbsp;the&nbsp;result&nbsp;returned&nbsp;by&nbsp;the&nbsp;download&nbsp;method |
-| success | Function | No | Called&nbsp;when&nbsp;the&nbsp;download&nbsp;task&nbsp;is&nbsp;complete. |
-| fail | Function | No | Called&nbsp;when&nbsp;downloading&nbsp;fails&nbsp;or&nbsp;the&nbsp;task&nbsp;does&nbsp;not&nbsp;exist. |
-| complete | Function | No | Called&nbsp;when&nbsp;the&nbsp;execution&nbsp;is&nbsp;complete. |
+onDownloadComplete(options: OnDownloadCompleteOptions): void
 
-Return values of the **success** callback
+Listens for download task status. This API returns no value.
 
-| Name | Type | Description |
-| -------- | -------- | -------- |
-| uri | string | URI&nbsp;of&nbsp;the&nbsp;download&nbsp;file |
+**System capability**: SystemCapability.MiscServices.Download
 
-One of the following error codes will be returned if the listening fails.
+**Parameters**
 
-| Error&nbsp;Code | Description |
-| -------- | -------- |
-| 400 | Download&nbsp;task&nbsp;failed |
-| 401 | Download&nbsp;task&nbsp;not&nbsp;exist |
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | options | [OnDownloadCompleteOptions](#ondownloadcompleteoptions) | Yes| Configurations of the download task.|
 
 **Example**
 
-```
-export default {    
-  onDownloadComplete() {        
-    request.onDownloadComplete({            
-      token: 'token-index',            
-      success: function(data) {                
-        console.log('download success, uri:' + data.uri);            
-      },            
-      fail: function(data, code) {                
-        console.log('download fail');            
-      },
-    });    
+  ```js
+  let onDownloadCompleteOptions = {
+    token: 'token-index',
+    success: function(data) {
+      console.info(' download success, code:' + JSON.stringify(data));
+    },
+    fail: function(data, code) {
+      console.info(' download fail data: ' + data + 'code: ' + code);
+    },
+    complete: function (){
+      console.info(' download complete');
+    }
   }
-}
-```
\ No newline at end of file
+  request.onDownloadComplete(onDownloadCompleteOptions);
+  ```
+
+
+## OnDownloadCompleteOptions
+
+**System capability**: SystemCapability.MiscServices.Download
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | token | string | Yes| Result token returned by the download API.|
+  | success | Function | No| Called when API call is successful.|
+  | fail | Function | No| Called when API call has failed.|
+  | complete | Function | No| Called when API call is complete.|
+
+**success parameter**
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | data | [OnDownloadCompleteResponse](#ondownloadcompleteresponse) | Yes| Information returned when the download task is successful.|
+
+**fail parameters**
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | data | any | Yes| Header information returned when the download task fails.|
+  | code | number | Yes| HTTP status code returned when the download task fails.|
+
+
+## OnDownloadCompleteResponse
+
+**System capability**: SystemCapability.MiscServices.Download
+
+  | Name| Type| Description|
+  | -------- | -------- | -------- |
+  | uri | string | URI of the download file.|
diff --git a/en/application-dev/reference/apis/js-apis-touchevent.md b/en/application-dev/reference/apis/js-apis-touchevent.md
index 05a6e52c9d6f1e402dc9a7e3d8d4a19c9a117ec3..404a78973a81b9604fd3e7644bca5d61d8773a49 100644
--- a/en/application-dev/reference/apis/js-apis-touchevent.md
+++ b/en/application-dev/reference/apis/js-apis-touchevent.md
@@ -70,7 +70,7 @@ import {Action,ToolType,SourceType,Touch,TouchEvent} from '@ohos.multimodalInput
 | toolHeight | number | Yes| No| Height of the tool area.|
 | rawX | number | Yes| No| X coordinate of the input device.|
 | rawY | number | Yes| No| Y coordinate of the input device.|
-| toolType | number | Yes| No| Tool type.|
+| toolType | ToolType | Yes| No| Tool type.|
 
 ## TouchEvent
 
diff --git a/en/application-dev/reference/apis/js-apis-usb-deprecated.md b/en/application-dev/reference/apis/js-apis-usb-deprecated.md
index ca250939af9aadf2c544dee30431c889331d332e..b3be9875df2554c6df5b8c358c9243d734d87874 100644
--- a/en/application-dev/reference/apis/js-apis-usb-deprecated.md
+++ b/en/application-dev/reference/apis/js-apis-usb-deprecated.md
@@ -638,16 +638,16 @@ Represents the USB endpoint from which data is sent or received. You can obtain
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name           | Type                                       | Description           |
-| ------------- | ------------------------------------------- | ------------- |
-| address       | number                                      | Endpoint address.        |
-| attributes    | number                                      | Endpoint attributes.        |
-| interval      | number                                      | Endpoint interval.        |
-| maxPacketSize | number                                      | Maximum size of data packets on the endpoint.   |
-| direction     | [USBRequestDirection](#usbrequestdirection) | Endpoint direction.       |
-| number        | number                                      | Endpoint number.         |
-| type          | number                                      | Endpoint type.        |
-| interfaceId   | number                                      | Unique ID of the interface to which the endpoint belongs.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| address       | number                                      | Yes | Endpoint address.        |
+| attributes    | number                                      | Yes | Endpoint attributes.        |
+| interval      | number                                      | Yes | Endpoint interval.        |
+| maxPacketSize | number                                      | Yes | Maximum size of data packets on the endpoint.   |
+| direction     | [USBRequestDirection](#usbrequestdirection) | Yes | Endpoint direction.       |
+| number        | number                                      | Yes | Endpoint number.         |
+| type          | number                                      | Yes | Endpoint type.        |
+| interfaceId   | number                                      | Yes | Unique ID of the interface to which the endpoint belongs.|
 
 ## USBInterface
 
@@ -655,15 +655,15 @@ Represents a USB interface. One [USBConfig](#usbconfig) can contain multiple **U
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name              | Type                                    | Description                   |
-| ---------------- | ---------------------------------------- | --------------------- |
-| id               | number                                   | Unique ID of the USB interface.             |
-| protocol         | number                                   | Interface protocol.               |
-| clazz            | number                                   | Device type.                |
-| subClass         | number                                   | Device subclass.                |
-| alternateSetting | number                                   | Settings for alternating between descriptors of the same USB interface.|
-| name             | string                                   | Interface name.                |
-| endpoints        | Array&lt;[USBEndpoint](#usbendpoint)&gt; | Endpoints that belong to the USB interface.          |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| id               | number                                   | Yes | Unique ID of the USB interface.             |
+| protocol         | number                                   | Yes | Interface protocol.               |
+| clazz            | number                                   | Yes | Device type.                |
+| subClass         | number                                   | Yes | Device subclass.                |
+| alternateSetting | number                                   | Yes | Settings for alternating between descriptors of the same USB interface.|
+| name             | string                                   | Yes | Interface name.                |
+| endpoints        | Array&lt;[USBEndpoint](#usbendpoint)&gt; | Yes | Endpoints that belong to the USB interface.          |
 
 ## USBConfig
 
@@ -671,15 +671,15 @@ Represents the USB configuration. One [USBDevice](#usbdevice) can contain multip
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name            | Type                                            | Description             |
-| -------------- | ------------------------------------------------ | --------------- |
-| id             | number                                           | Unique ID of the USB configuration.       |
-| attributes     | number                                           | Configuration attributes.         |
-| maxPower       | number                                           | Maximum power consumption, in mA.   |
-| name           | string                                           | Configuration name, which can be left empty.    |
-| isRemoteWakeup | boolean                                          | Support for remote wakeup.|
-| isSelfPowered  | boolean                                          | Support for independent power supplies.|
-| interfaces     | Array&nbsp;&lt;[USBInterface](#usbinterface)&gt; | Supported interface attributes.     |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| id             | number                                           | Yes | Unique ID of the USB configuration.       |
+| attributes     | number                                           | Yes | Configuration attributes.         |
+| maxPower       | number                                           | Yes | Maximum power consumption, in mA.   |
+| name           | string                                           | Yes | Configuration name, which can be left empty.    |
+| isRemoteWakeup | boolean                                          | Yes | Support for remote wakeup.|
+| isSelfPowered  | boolean                                          | Yes | Support for independent power supplies.|
+| interfaces     | Array&nbsp;&lt;[USBInterface](#usbinterface)&gt; | Yes | Supported interface attributes.     |
 
 ## USBDevice
 
@@ -687,21 +687,21 @@ Represents the USB device information.
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name              | Type                                | Description        |
-| ---------------- | ------------------------------------ | ---------- |
-| busNum           | number                               | Bus address.     |
-| devAddress       | number                               | Device address.     |
-| serial           | string                               | Sequence number.      |
-| name             | string                               | Device name.     |
-| manufacturerName | string                               | Device manufacturer.     |
-| productName      | string                               | Product name.     |
-| version          | string                               | Version number.       |
-| vendorId         | number                               | Vendor ID.     |
-| productId        | number                               | Product ID.     |
-| clazz            | number                               | Device class.      |
-| subClass         | number                               | Device subclass.     |
-| protocol         | number                               | Device protocol code.    |
-| configs          | Array&lt;[USBConfig](#usbconfig)&gt; | Device configuration descriptor information.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| busNum           | number                               | Yes | Bus address.     |
+| devAddress       | number                               | Yes | Device address.     |
+| serial           | string                               | Yes | Sequence number.      |
+| name             | string                               | Yes | Device name.     |
+| manufacturerName | string                               | Yes | Device manufacturer.     |
+| productName      | string                               | Yes | Product name.     |
+| version          | string                               | Yes | Version number.       |
+| vendorId         | number                               | Yes | Vendor ID.     |
+| productId        | number                               | Yes | Product ID.     |
+| clazz            | number                               | Yes | Device class.      |
+| subClass         | number                               | Yes | Device subclass.     |
+| protocol         | number                               | Yes | Device protocol code.    |
+| configs          | Array&lt;[USBConfig](#usbconfig)&gt; | Yes | Device configuration descriptor information.|
 
 ## USBDevicePipe
 
@@ -709,10 +709,10 @@ Represents a USB device pipe, which is used to determine a USB device.
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name        | Type  | Description   |
-| ---------- | ------ | ----- |
-| busNum     | number | Bus address.|
-| devAddress | number | Device address.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| busNum     | number | Yes | Bus address.|
+| devAddress | number | Yes | Device address.|
 
 ## USBControlParams
 
@@ -720,14 +720,14 @@ Represents control transfer parameters.
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name     | Type                                           | Description              |
-| ------- | ----------------------------------------------- | ---------------- |
-| request | number                                          | Request type.           |
-| target  | [USBRequestTargetType](#usbrequesttargettype)   | Request target type.         |
-| reqType | [USBControlRequestType](#usbcontrolrequesttype) | Control request type.         |
-| value   | number                                          | Request parameter value.           |
-| index   | number                                          | Index of the request parameter value.|
-| data    | Uint8Array                                      | Buffer for writing or reading data.    |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| request | number                                          | Yes | Request type.           |
+| target  | [USBRequestTargetType](#usbrequesttargettype)   | Yes | Request target type.         |
+| reqType | [USBControlRequestType](#usbcontrolrequesttype) | Yes | Control request type.         |
+| value   | number                                          | Yes | Request parameter value.           |
+| index   | number                                          | Yes | Index of the request parameter value.|
+| data    | Uint8Array                                      | Yes | Buffer for writing or reading data.    |
 
 ## USBPort<sup>9+</sup>
 
@@ -737,11 +737,11 @@ Represents a USB port.
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name          | Type                        | Description                               |
-| -------------- | -------------------------------- | ----------------------------------- |
-| id             | number                           | Unique identifier of a USB port.                  |
-| supportedModes | [PortModeType](#portmodetype9)   | Numeric mask combination for the supported mode list.|
-| status         | [USBPortStatus](#usbportstatus9) | USB port role.                      |
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| id             | number                           | Yes | Unique identifier of a USB port.                  |
+| supportedModes | [PortModeType](#portmodetype9)   | Yes | Numeric mask combination for the supported mode list.|
+| status         | [USBPortStatus](#usbportstatus9) | Yes | USB port role.                      |
 
 ## USBPortStatus<sup>9+</sup>
 
@@ -751,11 +751,11 @@ Enumerates USB port roles.
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name            | Type| Description                  |
-| ---------------- | -------- | ---------------------- |
-| currentMode      | number   | Current USB mode.       |
-| currentPowerRole | number   | Current power role.    |
-| currentDataRole  | number   | Current data role.|
+| Name     | Type    | Mandatory | Description |
+| -------- | ------- | --------- | ----------- |
+| currentMode      | number   | Yes | Current USB mode.      |
+| currentPowerRole | number   | Yes | Current power role.    |
+| currentDataRole  | number   | Yes | Current data role.     |
 
 ## USBRequestTargetType
 
diff --git a/en/application-dev/reference/apis/js-apis-usb.md b/en/application-dev/reference/apis/js-apis-usb.md
index 18c0ae75e03604340f2d9f61953c869605d01245..3e1c5b919c881ef5c0d0619a5b35e791c48c46cb 100644
--- a/en/application-dev/reference/apis/js-apis-usb.md
+++ b/en/application-dev/reference/apis/js-apis-usb.md
@@ -720,14 +720,14 @@ Represents the USB endpoint from which data is sent or received. You can obtain
 
 | Name           | Type                                       | Mandatory           |Description           |
 | ------------- | ------------------------------------------- | ------------- |------------- |
-| address       | number                                      | Yes|Endpoint address.        |
-| attributes    | number                                      | Yes|Endpoint attributes.        |
-| interval      | number                                      | Yes|Endpoint interval.        |
-| maxPacketSize | number                                      | Yes|Maximum size of data packets on the endpoint.   |
-| direction     | [USBRequestDirection](#usbrequestdirection) | Yes|Endpoint direction.       |
-| number        | number                                      | Yes|Endpoint number.         |
-| type          | number                                      | Yes|Endpoint type.        |
-| interfaceId   | number                                      | Yes|Unique ID of the interface to which the endpoint belongs.|
+| address       | number                                      | Yes | Endpoint address.        |
+| attributes    | number                                      | Yes | Endpoint attributes.        |
+| interval      | number                                      | Yes | Endpoint interval.        |
+| maxPacketSize | number                                      | Yes | Maximum size of data packets on the endpoint.   |
+| direction     | [USBRequestDirection](#usbrequestdirection) | Yes | Endpoint direction.       |
+| number        | number                                      | Yes | Endpoint number.         |
+| type          | number                                      | Yes | Endpoint type.        |
+| interfaceId   | number                                      | Yes | Unique ID of the interface to which the endpoint belongs.|
 
 ## USBInterface
 
@@ -737,13 +737,13 @@ Represents a USB interface. One [USBConfig](#usbconfig) can contain multiple **U
 
 | Name              | Type                                    | Mandatory           |Description                   |
 | ---------------- | ---------------------------------------- | ------------- |--------------------- |
-| id               | number                                   | Yes|Unique ID of the USB interface.             |
-| protocol         | number                                   | Yes|Interface protocol.               |
-| clazz            | number                                   | Yes|Device type.                |
-| subClass         | number                                   | Yes|Device subclass.                |
-| alternateSetting | number                                   | Yes|Settings for alternating between descriptors of the same USB interface.|
-| name             | string                                   | Yes|Interface name.                |
-| endpoints        | Array&lt;[USBEndpoint](#usbendpoint)&gt; | Yes|Endpoints that belong to the USB interface.          |
+| id               | number                                   | Yes | Unique ID of the USB interface.             |
+| protocol         | number                                   | Yes | Interface protocol.               |
+| clazz            | number                                   | Yes | Device type.                |
+| subClass         | number                                   | Yes | Device subclass.                |
+| alternateSetting | number                                   | Yes | Settings for alternating between descriptors of the same USB interface.|
+| name             | string                                   | Yes | Interface name.                |
+| endpoints        | Array&lt;[USBEndpoint](#usbendpoint)&gt; | Yes | Endpoints that belong to the USB interface.          |
 
 ## USBConfig
 
@@ -753,13 +753,13 @@ Represents the USB configuration. One [USBDevice](#usbdevice) can contain multip
 
 | Name            | Type                                            | Mandatory |Description             |
 | -------------- | ------------------------------------------------ | --------------- |--------------- |
-| id             | number                                           | Yes|Unique ID of the USB configuration.       |
-| attributes     | number                                           | Yes|Configuration attributes.         |
-| maxPower       | number                                           | Yes|Maximum power consumption, in mA.   |
-| name           | string                                           | Yes|Configuration name, which can be left empty.    |
-| isRemoteWakeup | boolean                                          | Yes|Support for remote wakeup.|
-| isSelfPowered  | boolean                                          | Yes| Support for independent power supplies.|
-| interfaces     | Array&nbsp;&lt;[USBInterface](#usbinterface)&gt; | Yes|Supported interface attributes.     |
+| id             | number                                           | Yes | Unique ID of the USB configuration.       |
+| attributes     | number                                           | Yes | Configuration attributes.         |
+| maxPower       | number                                           | Yes | Maximum power consumption, in mA.   |
+| name           | string                                           | Yes | Configuration name, which can be left empty.    |
+| isRemoteWakeup | boolean                                          | Yes | Support for remote wakeup.|
+| isSelfPowered  | boolean                                          | Yes | Support for independent power supplies.|
+| interfaces     | Array&nbsp;&lt;[USBInterface](#usbinterface)&gt; | Yes | Supported interface attributes.     |
 
 ## USBDevice
 
@@ -769,19 +769,19 @@ Represents the USB device information.
 
 | Name              | Type                                | Mandatory        |Description        |
 | ---------------- | ------------------------------------ | ---------- |---------- |
-| busNum           | number                               | Yes|Bus address.     |
-| devAddress       | number                               | Yes|Device address.     |
-| serial           | string                               | Yes|Sequence number.      |
-| name             | string                               | Yes|Device name.     |
-| manufacturerName | string                               | Yes| Device manufacturer.     |
-| productName      | string                               | Yes|Product name.     |
-| version          | string                               | Yes|Version number.       |
-| vendorId         | number                               | Yes|Vendor ID.     |
-| productId        | number                               | Yes|Product ID.     |
-| clazz            | number                               | Yes|Device class.      |
-| subClass         | number                               | Yes|Device subclass.     |
-| protocol         | number                               | Yes|Device protocol code.    |
-| configs          | Array&lt;[USBConfig](#usbconfig)&gt; | Yes|Device configuration descriptor information.|
+| busNum           | number                               | Yes | Bus address.     |
+| devAddress       | number                               | Yes | Device address.     |
+| serial           | string                               | Yes | Sequence number.      |
+| name             | string                               | Yes | Device name.     |
+| manufacturerName | string                               | Yes | Device manufacturer.     |
+| productName      | string                               | Yes | Product name.     |
+| version          | string                               | Yes | Version number.       |
+| vendorId         | number                               | Yes | Vendor ID.     |
+| productId        | number                               | Yes | Product ID.     |
+| clazz            | number                               | Yes | Device class.      |
+| subClass         | number                               | Yes | Device subclass.     |
+| protocol         | number                               | Yes | Device protocol code.    |
+| configs          | Array&lt;[USBConfig](#usbconfig)&gt; | Yes | Device configuration descriptor information.|
 
 ## USBDevicePipe
 
@@ -802,12 +802,12 @@ Represents control transfer parameters.
 
 | Name     | Type                                           | Mandatory              |Description              |
 | ------- | ----------------------------------------------- | ---------------- |---------------- |
-| request | number                                          | Yes  |Request type.           |
-| target  | [USBRequestTargetType](#usbrequesttargettype)   | Yes  |Request target type.         |
-| reqType | [USBControlRequestType](#usbcontrolrequesttype) | Yes  |Control request type.         |
-| value   | number                                          | Yes  |Request parameter value.           |
-| index   | number                                          | Yes  |Index of the request parameter value.|
-| data    | Uint8Array                                      | Yes  |Buffer for writing or reading data.    |
+| request | number                                          | Yes  | Request type.           |
+| target  | [USBRequestTargetType](#usbrequesttargettype)   | Yes  | Request target type.         |
+| reqType | [USBControlRequestType](#usbcontrolrequesttype) | Yes  | Control request type.         |
+| value   | number                                          | Yes  | Request parameter value.           |
+| index   | number                                          | Yes  | Index of the request parameter value.|
+| data    | Uint8Array                                      | Yes  | Buffer for writing or reading data.    |
 
 ## USBPort
 
@@ -819,9 +819,9 @@ Represents a USB port.
 
 | Name          | Type                        | Mandatory     |Description                               |
 | -------------- | ------------------------------- | ------------------- |------------------------ |
-| id             | number                          | Yes  |Unique identifier of a USB port.                  |
-| supportedModes | [PortModeType](#portmodetype)   | Yes  |Numeric mask combination for the supported mode list.|
-| status         | [USBPortStatus](#usbportstatus) | Yes  |USB port role.                      |
+| id             | number                          | Yes  | Unique identifier of a USB port.                  |
+| supportedModes | [PortModeType](#portmodetype)   | Yes  | Numeric mask combination for the supported mode list.|
+| status         | [USBPortStatus](#usbportstatus) | Yes  | USB port role.                      |
 
 ## USBPortStatus
 
@@ -833,9 +833,9 @@ Enumerates USB port roles.
 
 | Name            | Type| Mandatory     |Description                  |
 | ---------------- | -------- | ---------------- |---------------------- |
-| currentMode      | number   | Yes|Current USB mode.       |
-| currentPowerRole | number   | Yes  |Current power role.    |
-| currentDataRole  | number   | Yes  |Current data role.|
+| currentMode      | number   | Yes  | Current USB mode.       |
+| currentPowerRole | number   | Yes  | Current power role.    |
+| currentDataRole  | number   | Yes  | Current data role.|
 
 ## USBRequestTargetType
 
@@ -843,12 +843,12 @@ Enumerates request target types.
 
 **System capability**: SystemCapability.USB.USBManager
 
-| Name                        | Value  | Description  |
-| ---------------------------- | ---- | ------ |
-| USB_REQUEST_TARGET_DEVICE    | 0    | Device|
-| USB_REQUEST_TARGET_INTERFACE | 1    | Interface|
-| USB_REQUEST_TARGET_ENDPOINT  | 2    | Endpoint|
-| USB_REQUEST_TARGET_OTHER     | 3    | Other|
+| Name                         | Value | Description |
+| ---------------------------- | ----- | ----------- |
+| USB_REQUEST_TARGET_DEVICE    | 0     | Device      |
+| USB_REQUEST_TARGET_INTERFACE | 1     | Interface   |
+| USB_REQUEST_TARGET_ENDPOINT  | 2     | Endpoint    |
+| USB_REQUEST_TARGET_OTHER     | 3     | Other       |
 
 ## USBControlRequestType
 
diff --git a/en/application-dev/reference/apis/js-apis-wallpaper.md b/en/application-dev/reference/apis/js-apis-wallpaper.md
index 371e69dd03b0e5886456a189f9aceeb4444610c0..c7f4c94d54cc19d3a95ff40784af886d28f1e3ff 100644
--- a/en/application-dev/reference/apis/js-apis-wallpaper.md
+++ b/en/application-dev/reference/apis/js-apis-wallpaper.md
@@ -1,6 +1,6 @@
 # @ohos.wallpaper
 
-The **wallpaper** module is part of the theme framework and provides the system-level wallpaper management service in OpenHarmony. You can use the APIs of this module to show, set, and switch between wallpapers.
+The **wallpaper** module is a system service module in OpenHarmony that provides the wallpaper management service. You can use the APIs of this module to show, set, and switch between wallpapers.
 
 > **NOTE**
 > 
@@ -63,7 +63,12 @@ Obtains the main color information of the wallpaper of the specified type.
 **Example**
 
 ```js
-let colors = wallpaper.getColorsSync(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
+try {
+    let colors = wallpaper.getColorsSync(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
+    console.log(`success to getColorsSync: ${JSON.stringify(colors)}`);
+} catch (error) {
+    console.error(`failed to getColorsSync because: ${JSON.stringify(error)}`);
+}
 ```
 
 ## wallpaper.getIdSync<sup>9+</sup>
@@ -84,12 +89,17 @@ Obtains the ID of the wallpaper of the specified type.
 
 | Type| Description|
 | -------- | -------- |
-| number | ID of the wallpaper. If this type of wallpaper is configured, a number greater than or equal to **0** is returned. Otherwise, **-1** is returned. The value ranges from -1 to 2^31-1.|
+| number | ID of the wallpaper. If this type of wallpaper is configured, a number greater than or equal to **0** is returned. Otherwise, **-1** is returned. The value ranges from -1 to (2^31-1).|
 
 **Example**
 
 ```js
-let id = wallpaper.getIdSync(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
+try {
+    let id = wallpaper.getIdSync(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
+    console.log(`success to getIdSync: ${JSON.stringify(id)}`);
+} catch (error) {
+    console.error(`failed to getIdSync because: ${JSON.stringify(error)}`);
+}
 ```
 
 ## wallpaper.getMinHeightSync<sup>9+</sup>
@@ -187,7 +197,7 @@ Resets the wallpaper of the specified type to the default wallpaper. This API us
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is error information.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the wallpaper is reset, **err** is **undefined**. Otherwise, **err** is an error object.|
 
 **Example**
 
@@ -247,14 +257,14 @@ Sets a specified source as the wallpaper of a specified type. This API uses an a
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or bitmap of a PNG file.|
+| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or pixel map of a PNG file.|
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is error information.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the wallpaper is set, **err** is **undefined**. Otherwise, **err** is an error object.|
 
 **Example**
 
 ```js
-//The source type is string.
+// The source type is string.
 let wallpaperPath = "/data/data/ohos.acts.aafwk.plrdtest.form/files/Cup_ic.jpg";
 wallpaper.setImage(wallpaperPath, wallpaper.WallpaperType.WALLPAPER_SYSTEM, (error) => {
     if (error) {
@@ -300,7 +310,7 @@ Sets a specified source as the wallpaper of a specified type. This API uses a pr
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or bitmap of a PNG file.|
+| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or pixel map of a PNG file.|
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
 
 **Return value**
@@ -312,7 +322,7 @@ Sets a specified source as the wallpaper of a specified type. This API uses a pr
 **Example**
 
 ```js
-//The source type is string.
+// The source type is string.
 let wallpaperPath = "/data/data/ohos.acts.aafwk.plrdtest.form/files/Cup_ic.jpg";
 wallpaper.setImage(wallpaperPath, wallpaper.WallpaperType.WALLPAPER_SYSTEM).then(() => {
     console.log(`success to setImage.`);
@@ -365,7 +375,12 @@ Obtains the wallpaper of the specified type.
 **Example**
 
 ```js
-let file = wallpaper.getFileSync(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
+try {
+    let file = wallpaper.getFileSync(wallpaper.WallpaperType.WALLPAPER_SYSTEM);
+    console.log(`success to getFileSync: ${JSON.stringify(file)}`);
+} catch (error) {
+    console.error(`failed to getFileSync because: ${JSON.stringify(error)}`);
+}
 ```
 
 ## wallpaper.getImage<sup>9+</sup>
@@ -385,7 +400,7 @@ Obtains the pixel map for the wallpaper of the specified type. This API uses an
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;[image.PixelMap](js-apis-image.md#pixelmap7)&gt; | Yes| Callback used to return the result. Returns the pixel map size of the wallpaper if the operation is successful; returns an error message otherwise.|
+| callback | AsyncCallback&lt;[image.PixelMap](js-apis-image.md#pixelmap7)&gt; | Yes| Callback used to return the result. If the operation is successful, the pixel map of the wallpaper is returned. Otherwise, error information is returned.|
 
 **Example**
 
@@ -422,7 +437,7 @@ Obtains the pixel map for the wallpaper of the specified type. This API uses a p
 
 | Type| Description|
 | -------- | -------- |
-| Promise&lt;[image.PixelMap](js-apis-image.md#pixelmap7)&gt; | Promise used to return the result. Returns the pixel map size of the wallpaper if the operation is successful; returns an error message otherwise.|
+| Promise&lt;[image.PixelMap](js-apis-image.md#pixelmap7)&gt; | Promise used to return the result. If the operation is successful, the pixel map of the wallpaper is returned. Otherwise, error information is returned.|
 
 **Example**
 
@@ -452,10 +467,14 @@ Subscribes to the wallpaper color change event.
 **Example**
 
 ```js
-let listener = (colors, wallpaperType) => {
-    console.log(`wallpaper color changed.`);
-};
-wallpaper.on('colorChange', listener);
+try {
+    let listener = (colors, wallpaperType) => {
+        console.log(`wallpaper color changed.`);
+    };
+    wallpaper.on('colorChange', listener);
+} catch (error) {
+    console.error(`failed to on because: ${JSON.stringify(error)}`);
+}
 ```
 
 ## wallpaper.off('colorChange')<sup>9+</sup>
@@ -479,11 +498,25 @@ Unsubscribes from the wallpaper color change event.
 let listener = (colors, wallpaperType) => {
     console.log(`wallpaper color changed.`);
 };
-wallpaper.on('colorChange', listener);
-// Unsubscribe from the listener.
-wallpaper.off('colorChange', listener);
-// Unsubscribe from all subscriptions of the colorChange type.
-wallpaper.off('colorChange');
+try {
+    wallpaper.on('colorChange', listener);
+} catch (error) {
+    console.error(`failed to on because: ${JSON.stringify(error)}`);
+}
+
+try {
+    // Unsubscribe from the listener.
+    wallpaper.off('colorChange', listener);
+} catch (error) {
+    console.error(`failed to off because: ${JSON.stringify(error)}`);
+}
+
+try {
+    // Unsubscribe from all subscriptions of the colorChange type.
+    wallpaper.off('colorChange');
+} catch (error) {
+    console.error(`failed to off because: ${JSON.stringify(error)}`);
+}
 ```
 
 ## wallpaper.getColors<sup>(deprecated)</sup>
@@ -568,7 +601,7 @@ Obtains the ID of the wallpaper of the specified type. This API uses an asynchro
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;number&gt; | Yes| Callback used to return the wallpaper ID. If the wallpaper of the specified type is configured, a number greater than or equal to **0** is returned. Otherwise, **-1** is returned. The value ranges from -1 to 2^31-1.|
+| callback | AsyncCallback&lt;number&gt; | Yes| Callback used to return the wallpaper ID. If the wallpaper of the specified type is configured, a number greater than or equal to **0** is returned. Otherwise, **-1** is returned. The value ranges from -1 to (2^31-1).|
 
 **Example**
 
@@ -604,7 +637,7 @@ Obtains the ID of the wallpaper of the specified type. This API uses a promise t
 
 | Type| Description|
 | -------- | -------- |
-| Promise&lt;number&gt; | Promise used to return the wallpaper ID. If this type of wallpaper is configured, a number greater than or equal to **0** is returned. Otherwise, **-1** is returned. The value ranges from -1 to 2^31-1.|
+| Promise&lt;number&gt; | Promise used to return the wallpaper ID. If this type of wallpaper is configured, a number greater than or equal to **0** is returned. Otherwise, **-1** is returned. The value ranges from -1 to (2^31-1).|
 
 **Example**
 
@@ -867,7 +900,7 @@ Resets the wallpaper of the specified type to the default wallpaper. This API us
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is error information.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the wallpaper is reset, **err** is **undefined**. Otherwise, **err** is an error object.|
 
 **Example**
 
@@ -935,14 +968,14 @@ Sets a specified source as the wallpaper of a specified type. This API uses an a
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or bitmap of a PNG file.|
+| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or pixel map of a PNG file.|
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is error information.|
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result. If the wallpaper is set, **err** is **undefined**. Otherwise, **err** is an error object.|
 
 **Example**
 
 ```js
-//The source type is string.
+// The source type is string.
 let wallpaperPath = "/data/data/ohos.acts.aafwk.plrdtest.form/files/Cup_ic.jpg";
 wallpaper.setWallpaper(wallpaperPath, wallpaper.WallpaperType.WALLPAPER_SYSTEM, (error) => {
     if (error) {
@@ -992,7 +1025,7 @@ Sets a specified source as the wallpaper of a specified type. This API uses a pr
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or bitmap of a PNG file.|
+| source | string \| [image.PixelMap](js-apis-image.md#pixelmap7) | Yes| URI of a JPEG or PNG file, or pixel map of a PNG file.|
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
 
 **Return value**
@@ -1004,7 +1037,7 @@ Sets a specified source as the wallpaper of a specified type. This API uses a pr
 **Example**
 
 ```js
-//The source type is string.
+// The source type is string.
 let wallpaperPath = "/data/data/ohos.acts.aafwk.plrdtest.form/files/Cup_ic.jpg";
 wallpaper.setWallpaper(wallpaperPath, wallpaper.WallpaperType.WALLPAPER_SYSTEM).then(() => {
     console.log(`success to setWallpaper.`);
@@ -1123,7 +1156,7 @@ Obtains the pixel map for the wallpaper of the specified type. This API uses an
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | wallpaperType | [WallpaperType](#wallpapertype) | Yes| Wallpaper type.|
-| callback | AsyncCallback&lt;image.PixelMap&gt; | Yes| Callback used to return the result. Returns the pixel map size of the wallpaper if the operation is successful; returns an error message otherwise.|
+| callback | AsyncCallback&lt;image.PixelMap&gt; | Yes| Callback used to return the result. If the operation is successful, the pixel map of the wallpaper is returned. Otherwise, error information is returned.|
 
 **Example**
 
@@ -1163,7 +1196,7 @@ Obtains the pixel map for the wallpaper of the specified type. This API uses a p
 
 | Type| Description|
 | -------- | -------- |
-| Promise&lt;image.PixelMap&gt; | Promise used to return the result. Returns the pixel map size of the wallpaper if the operation is successful; returns an error message otherwise.|
+| Promise&lt;image.PixelMap&gt; | Promise used to return the result. If the operation is successful, the pixel map of the wallpaper is returned. Otherwise, error information is returned.|
 
 **Example**
 
diff --git a/en/application-dev/reference/arkui-ts/figures/animation.PNG b/en/application-dev/reference/arkui-ts/figures/animation.PNG
new file mode 100644
index 0000000000000000000000000000000000000000..92f92e0001a90840d03ebd00e0b0ef736c2a94c8
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/animation.PNG differ
diff --git a/en/application-dev/reference/arkui-ts/figures/animation.gif b/en/application-dev/reference/arkui-ts/figures/animation.gif
new file mode 100644
index 0000000000000000000000000000000000000000..6cfbc07fc5122be3ecd69e6b33b6f00c0f676a0f
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/animation.gif differ
diff --git a/en/application-dev/reference/arkui-ts/figures/animation1.PNG b/en/application-dev/reference/arkui-ts/figures/animation1.PNG
new file mode 100644
index 0000000000000000000000000000000000000000..98cc1fa8c0537071549fa8185fa14f7ad103e7f8
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/animation1.PNG differ
diff --git a/en/application-dev/reference/arkui-ts/figures/button.gif b/en/application-dev/reference/arkui-ts/figures/button.gif
new file mode 100644
index 0000000000000000000000000000000000000000..04ab6ed97635118a7ffd3fb9d6be666f2ac40691
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/button.gif differ
diff --git a/en/application-dev/reference/arkui-ts/figures/clipAndMask.PNG b/en/application-dev/reference/arkui-ts/figures/clipAndMask.PNG
new file mode 100644
index 0000000000000000000000000000000000000000..6f522bf5a01241f67ad8c493a04f3d9d71aa9be5
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/clipAndMask.PNG differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001211898492.gif b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001211898492.gif
deleted file mode 100644
index b1724791e4acb31d193a0dce267e42c99288c6bd..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001211898492.gif and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001211898494.gif b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001211898494.gif
deleted file mode 100644
index 3c81f8cfffb0c4d064335c9ebc0e8c918d10035a..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001211898494.gif and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212218452.png b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212218452.png
deleted file mode 100644
index 2243912034c109d0ffa57837aa28f4fab4ed55d7..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212218452.png and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212378394.png b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212378394.png
deleted file mode 100644
index 884eb29ed12c00641fec55f358a41f15f581c335..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212378394.png and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212378444.gif b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212378444.gif
deleted file mode 100644
index 69cc497191325216c394de0ce00328a7c5c5fc8c..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001212378444.gif and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001256978345.gif b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001256978345.gif
deleted file mode 100644
index 864e3a39a57b7a45f63a07fe50545629db3527c4..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001256978345.gif and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001257138341.gif b/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001257138341.gif
deleted file mode 100644
index bb1dd72311c866d5bf31a706d75fc1e107a5a946..0000000000000000000000000000000000000000
Binary files a/en/application-dev/reference/arkui-ts/figures/en-us_image_0000001257138341.gif and /dev/null differ
diff --git a/en/application-dev/reference/arkui-ts/figures/flex.PNG b/en/application-dev/reference/arkui-ts/figures/flex.PNG
new file mode 100644
index 0000000000000000000000000000000000000000..9975e8261fd548d2b11607ed3603410dd4a1577e
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/flex.PNG differ
diff --git a/en/application-dev/reference/arkui-ts/figures/shared.gif b/en/application-dev/reference/arkui-ts/figures/shared.gif
new file mode 100644
index 0000000000000000000000000000000000000000..d43a6a38d9516945efc3ed80f4f1592c94645952
Binary files /dev/null and b/en/application-dev/reference/arkui-ts/figures/shared.gif differ
diff --git a/en/application-dev/reference/arkui-ts/ts-animatorproperty.md b/en/application-dev/reference/arkui-ts/ts-animatorproperty.md
index b390dc8ead870e17ad37c02632295e1f2e414bfc..36d37c6d5fe1e091128d60ee0ff9f337bd13c818 100644
--- a/en/application-dev/reference/arkui-ts/ts-animatorproperty.md
+++ b/en/application-dev/reference/arkui-ts/ts-animatorproperty.md
@@ -1,23 +1,21 @@
 # Property Animator
 
-You can create a property animator to animate certain universal attributes of a component, including **width**, **height**, backgroundColor, **opacity**, **scale**, **rotate**, and **translate**.
+You can create a property animator to animate certain universal attributes of a component, including **width**, **height**, **backgroundColor**, **opacity**, **scale**, **rotate**, and **translate**.
 
 > **NOTE**
 >
 > This event is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.
 
-animation(value: {duration?: number, tempo?: number, curve?: string | Curve | ICurve, delay?:number, iterations: number, playMode?: PlayMode, onFinish?: () => void})
 
-Applies a property animator to the component to animate its attributes over time.
+animation(value: {duration?: number, tempo?: number, curve?: string | Curve | ICurve, delay?:number, iterations: number, playMode?: PlayMode, onFinish?: () => void})
 
 **Parameters**
 
-
 | Name        | Type                                      | Mandatory   | Description                                                        |
 | ---------- | ------------------------------------------| ---- | ------------------------------------------------------------ |
 | duration   | number                                    | No   | Animation duration, in ms.<br>Default value: **1000**|
 | tempo      | number                                    | No   | Animation playback speed. A greater value indicates a higher animation playback speed.<br>The value **0** indicates that no animation is applied.<br>Default value: **1**|
-| curve      | string&nbsp;\|&nbsp;[Curve](ts-appendix-enums.md#curve)&nbsp;\|&nbsp;ICurve<sup>9+</sup> | No  | Animation curve.<br>Default value: **Curve.Linear**  |
+| curve      | string \| [Curve](ts-appendix-enums.md#curve) \| ICurve<sup>9+</sup> | No  | Animation curve.<br>Default value: **Curve.Linear**  |
 | delay      | number                                    | No   | Delay of animation playback, in ms. The value **0** indicates that the playback is not delayed.<br>Default value: **0**  |
 | iterations | number                                    | No   | Number of times that the animation is played. The value **-1** indicates that the animation is played for an unlimited number of times.<br>Default value: **1**|
 | playMode   | [PlayMode](ts-appendix-enums.md#playmode) | No   | Animation playback mode. By default, the animation is played from the beginning after the playback is complete.<br>Default value: **PlayMode.Normal**|
@@ -31,34 +29,49 @@ Applies a property animator to the component to animate its attributes over time
 @Entry
 @Component
 struct AttrAnimationExample {
-  @State widthSize: number = 200;
-  @State heightSize: number = 100;
-  @State flag: boolean = true;
+  @State widthSize: number = 250
+  @State heightSize: number = 100
+  @State rotateAngle: number = 0
+  @State flag: boolean = true
 
   build() {
     Column() {
-      Button('click me')
-        .onClick((event: ClickEvent) => {
+      Button('change width and height')
+        .onClick(() => {
           if (this.flag) {
             this.widthSize = 100
             this.heightSize = 50
           } else {
-            this.widthSize = 200
+            this.widthSize = 250
             this.heightSize = 100
           }
           this.flag = !this.flag
         })
-        .width(this.widthSize).height(this.heightSize).backgroundColor(0x317aff)
+        .margin(30)
+        .width(this.widthSize)
+        .height(this.heightSize)
         .animation({
-          duration: 2000, // Animation duration
-          curve: Curve.EaseOut, // Animation curve
-          delay: 500, // Animation delay
-          iterations: 1, // Number of playback times
-          playMode: PlayMode.Normal // Animation playback mode
-        }) // Animation configuration for the width and height attributes of the <Button> component
-    }.width('100%').margin({ top: 5 })
+          duration: 2000,
+          curve: Curve.EaseOut,
+          iterations: 3,
+          playMode: PlayMode.Normal
+        })
+      Button('change rotate angle')
+        .onClick(() => {
+          this.rotateAngle = 90
+        })
+        .margin(50)
+        .rotate({ angle: this.rotateAngle })
+        .animation({
+          duration: 1200,
+          curve: Curve.Friction,
+          delay: 500,
+          iterations: -1,   // The value -1 indicates that the animation is played for an unlimited number of times.
+          playMode: PlayMode.AlternateReverse
+        })
+    }.width('100%').margin({ top: 20 })
   }
 }
 ```
 
-![en-us_image_0000001212378444](figures/en-us_image_0000001212378444.gif)
+![animation](figures/animation.gif)
diff --git a/en/application-dev/reference/arkui-ts/ts-basic-components-button.md b/en/application-dev/reference/arkui-ts/ts-basic-components-button.md
index fa5705777b76c6c4e94e261efbda40a64054c991..e1e4ac13b65cdec171016867e8b90dfa390efe6f 100644
--- a/en/application-dev/reference/arkui-ts/ts-basic-components-button.md
+++ b/en/application-dev/reference/arkui-ts/ts-basic-components-button.md
@@ -14,26 +14,26 @@ This component can contain only one child component.
 
 ## APIs
 
-**Method 1:** Button(options?: {type?: ButtonType, stateEffect?: boolean})
+**API 1:** Button(options?: {type?: ButtonType, stateEffect?: boolean})
 
 **Parameters**
 
 | Name        | Type      | Mandatory       | Description                             |
 | ----------- | ---------- | ------| --------------------------------- |
 | type        | ButtonType | No   | Button type.<br>Default value: **ButtonType.Capsule**                          |
-| stateEffect | boolean    | No   |  Whether to enable the state switchover effect for when the button is touched or clicked. The value **false** indicates that the state switchover effect is disabled.<br>Default value: **true**|
+| stateEffect | boolean    | No   |  Whether to enable the pressed effect on the click of the button. The value **false** means to disable the pressed effect.<br>Default value: **true**|
 
 
-**Method 2:** Button(label?: ResourceStr, options?: { type?: ButtonType, stateEffect?: boolean })
+**API 2:** Button(label?: ResourceStr, options?: { type?: ButtonType, stateEffect?: boolean })
 
   Creates a button component based on text content. In this case, the component cannot contain child components.
 
 **Parameters**
 
-  | Name    | Type                               | Mandatory  | Description         |
-  | ------- | ----------------------------------- | ---- | ------------- |
-  | label   | [ResourceStr](ts-types.md#resourcestr) | No   | Button text.      |
-  | options | Object                              | No   | For details, see **options**.|
+| Name    | Type                               | Mandatory  | Description         |
+| ------- | ----------------------------------- | ---- | ------------- |
+| label   | [ResourceStr](ts-types.md#resourcestr) | No   | Button text.      |
+| options | { type?: ButtonType, stateEffect?: boolean }   | No   | See parameters of API 1.|
 
 
 ## Attributes
@@ -41,7 +41,7 @@ This component can contain only one child component.
 | Name         | Type          | Description                               |
 | ----------- | ----------- | --------------------------------- |
 | type        | ButtonType  |  Button type.<br>Default value: **ButtonType.Capsule**                      |
-| stateEffect | boolean     |  Whether to enable the state switchover effect. The value **false** indicates that the state switchover effect is disabled.<br>Default value: **true**|
+| stateEffect | boolean     |  Whether to enable the pressed effect on the click of the button. The value **false** means to disable the pressed effect.<br>Default value: **true**|
 
 ## ButtonType enums
 | Name     | Description                |
@@ -66,43 +66,42 @@ This component can contain only one child component.
 struct ButtonExample {
   build() {
     Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Start, justifyContent: FlexAlign.SpaceBetween }) {
-      Text('Common button').fontSize(9).fontColor(0xCCCCCC)
+      Text('Normal button').fontSize(9).fontColor(0xCCCCCC)
       Flex({ alignItems: ItemAlign.Center, justifyContent: FlexAlign.SpaceBetween }) {
-        Button('Ok', { type: ButtonType.Normal, stateEffect: true }).borderRadius(8).backgroundColor(0x317aff).width(90)
+        Button('OK', { type: ButtonType.Normal, stateEffect: true }).borderRadius(8).backgroundColor(0x317aff).width(90)
         Button({ type: ButtonType.Normal, stateEffect: true }) {
           Row() {
-            // To import an image, you are advised to create a Resource object through $r.
-            Image($r('app.media.loading')).width(20).height(20).margin({ left: 12 })
+            LoadingProgress().width(20).height(20).margin({ left: 12 }).color(0xFFFFFF)
             Text('loading').fontSize(12).fontColor(0xffffff).margin({ left: 5, right: 12 })
           }.alignItems(VerticalAlign.Center)
-        }.borderRadius(8).backgroundColor(0x317aff).width(90)
-        Button('Disable', { type: ButtonType.Normal, stateEffect: false }).opacity(0.5)
+        }.borderRadius(8).backgroundColor(0x317aff).width(90).height(40)
+
+        Button('Disable', { type: ButtonType.Normal, stateEffect: false }).opacity(0.4)
           .borderRadius(8).backgroundColor(0x317aff).width(90)
       }
 
       Text('Capsule button').fontSize(9).fontColor(0xCCCCCC)
       Flex({ alignItems: ItemAlign.Center, justifyContent: FlexAlign.SpaceBetween }) {
-        Button('Ok', { type: ButtonType.Capsule, stateEffect: true }).backgroundColor(0x317aff).width(90)
+        Button('OK', { type: ButtonType.Capsule, stateEffect: true }).backgroundColor(0x317aff).width(90)
         Button({ type: ButtonType.Capsule, stateEffect: true }) {
           Row() {
-            Image($r('app.media.loading')).width(20).height(20).margin({ left: 12 })
+            LoadingProgress().width(20).height(20).margin({ left: 12 }).color(0xFFFFFF)
             Text('loading').fontSize(12).fontColor(0xffffff).margin({ left: 5, right: 12 })
-          }.alignItems(VerticalAlign.Center).width(90)
+          }.alignItems(VerticalAlign.Center).width(90).height(40)
         }.backgroundColor(0x317aff)
-        .onClick((event: ClickEvent) => {
-          AlertDialog.show({ message: 'The login is successful' })
-        })
-        Button('Disable', { type: ButtonType.Capsule, stateEffect: false }).opacity(0.5)
+
+        Button('Disable', { type: ButtonType.Capsule, stateEffect: false }).opacity(0.4)
           .backgroundColor(0x317aff).width(90)
       }
 
       Text('Circle button').fontSize(9).fontColor(0xCCCCCC)
       Flex({ alignItems: ItemAlign.Center, wrap: FlexWrap.Wrap }) {
         Button({ type: ButtonType.Circle, stateEffect: true }) {
-          Image($r('app.media.ic_public_app_filled')).width(20).height(20)
+          LoadingProgress().width(20).height(20).color(0xFFFFFF)
         }.width(55).height(55).backgroundColor(0x317aff)
+
         Button({ type: ButtonType.Circle, stateEffect: true }) {
-          Image($r('app.media.ic_public_delete_filled')).width(30).height(30)
+          LoadingProgress().width(20).height(20).color(0xFFFFFF)
         }.width(55).height(55).margin({ left: 20 }).backgroundColor(0xF55A42)
       }
     }.height(400).padding({ left: 35, right: 35, top: 35 })
@@ -110,4 +109,4 @@ struct ButtonExample {
 }
 ```
 
-![en-us_image_0000001257138341](figures/en-us_image_0000001257138341.gif)
+![button](figures/button.gif)
diff --git a/en/application-dev/reference/arkui-ts/ts-basic-components-slider.md b/en/application-dev/reference/arkui-ts/ts-basic-components-slider.md
index 23fc584c49bd484a0629974154a7de5738bb4a21..fab2a885c671b6b480cbf672aa46e66730ff5cb6 100644
--- a/en/application-dev/reference/arkui-ts/ts-basic-components-slider.md
+++ b/en/application-dev/reference/arkui-ts/ts-basic-components-slider.md
@@ -23,7 +23,7 @@ Slider(options?: {value?: number, min?: number, max?: number, step?: number, sty
 | value | number | No| Current progress.<br>Default value: **0**|
 | min | number | No| Minimum value.<br>Default value: **0**|
 | max | number | No| Maximum value.<br>Default value: **100**|
-| step | number | No| Step of the slider.<br>Default value: **1**|
+| step | number | No| Step of the slider.<br>Default value: **1**<br>Value range: [0.01, max]|
 | style | SliderStyle | No| Style of the slider thumb and track.<br>Default value: **SliderStyle.OutSet**|
 | direction<sup>8+</sup> | [Axis](ts-appendix-enums.md#axis) | No| Whether the slider moves horizontally or vertically.<br>Default value: **Axis.Horizontal**|
 | reverse<sup>8+</sup> | boolean | No| Whether the slider values are reversed. By default, the values increase from left to right for a horizontal slider and from top to bottom for a vertical slider.<br>Default value: **false**|
@@ -46,7 +46,7 @@ Except touch target attributes, the universal attributes are supported.
 | trackColor | [ResourceColor](ts-types.md#resourcecolor) | Background color of the slider.|
 | selectedColor | [ResourceColor](ts-types.md#resourcecolor) | Color of the selected part of the slider track.|
 | showSteps | boolean | Whether to display the current step.<br>Default value: **false**|
-| showTips | boolean | Whether to display a bubble to indicate the percentage when the user drags the slider.<br>Default value: **false** |
+| showTips | boolean | Whether to display a bubble to indicate the percentage when the user drags the slider.<br>Default value: **false**|
 | trackThickness      | [Length](ts-types.md#length) | Track thickness of the slider.|
 
 
@@ -223,4 +223,4 @@ struct SliderExample {
 }
 ```
 
-![en-us_image_0000001211898492](figures/en-us_image_0000001211898492.gif)
+![en-us_image_0000001179613854](figures/en-us_image_0000001179613854.gif)
diff --git a/en/application-dev/reference/arkui-ts/ts-explicit-animation.md b/en/application-dev/reference/arkui-ts/ts-explicit-animation.md
index 3f98dbecbfc01753d05eab1f5b14cc915afd2aa4..daf2238308091eaab298b7a757f0ef6e844eceb3 100644
--- a/en/application-dev/reference/arkui-ts/ts-explicit-animation.md
+++ b/en/application-dev/reference/arkui-ts/ts-explicit-animation.md
@@ -7,10 +7,12 @@ You can create explicit animation with your custom settings.
 >  The APIs of this module are supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.
 
 
-| API                                                    | Description                                                    |
-| ------------------------------------------------------------ | ------------------------------------------------------------ |
-| animateTo(value: [AnimateParam](#animateparam), event: ()=&gt; void) : void | Provides a transition animation when the status changes due to the closure code.<br>**event** specifies the closure function that displays the dynamic effect. The system automatically inserts the transition animation if the status changes in the closure function.|
+animateTo(value: AnimateParam, event: () => void): void
 
+| Name            | Type       |       Mandatory    |        Description       |
+| ---------------- | ------------ | -------------------- | -------------------- |
+| value | [AnimateParam](#animateparam)| Yes| Animation settings.|
+| event | () => void | Yes| Closure function that displays the dynamic effect. The system automatically inserts the transition animation if the status changes in the closure function.|
 
 ## AnimateParam
 
@@ -25,7 +27,6 @@ You can create explicit animation with your custom settings.
 | onFinish   | () =&gt; void   | Callback invoked when the animation playback is complete.|
 
 
-
 ## Example
 
 ```ts
@@ -33,26 +34,24 @@ You can create explicit animation with your custom settings.
 @Entry
 @Component
 struct AnimateToExample {
-  @State widthSize: number = 200
+  @State widthSize: number = 250
   @State heightSize: number = 100
+  @State rotateAngle: number = 0
   private flag: boolean = true
 
   build() {
     Column() {
-      Button('click me')
+      Button('change width and height')
         .width(this.widthSize)
         .height(this.heightSize)
-        .backgroundColor(0x317aff)
-        .onClick((event: ClickEvent) => {
-          // Animation configuration for the width and height attributes of the <Button> component
+        .margin(30)
+        .onClick(() => {
           if (this.flag) {
             animateTo({
-              duration: 1000, // Animation duration
-              tempo: 0.5, // Playback speed
-              curve: Curve.EaseInOut, // Animation curve
-              delay: 200, // Animation delay
-              iterations: 1, // Number of playback times
-              playMode: PlayMode.Normal // Animation playback mode
+              duration: 2000,
+              curve: Curve.EaseOut,
+              iterations: 3,
+              playMode: PlayMode.Normal,
               onFinish: () => {
                 console.info('play end')
               }
@@ -61,25 +60,39 @@ struct AnimateToExample {
               this.heightSize = 50
             })
           } else {
-            animateTo({
-              duration: 200, // Animation duration
-              curve: Curve.Ease, // Animated curve
-              delay: 200, // Animation delay
-              iterations: 1, // Number of playback times
-              playMode: PlayMode.Normal // Animation playback mode
-              onFinish: () => {
-                console.info('play end')
-              }
-            }, () => {
-              this.widthSize = 200
+            animateTo({}, () => {
+              this.widthSize = 250
               this.heightSize = 100
             })
           }
           this.flag = !this.flag
         })
+      Button('change rotate angle')
+        .margin(50)
+        .rotate({ x: 0, y: 0, z: 1, angle: this.rotateAngle })
+        .onClick(() => {
+          animateTo({
+            duration: 1200,
+            curve: Curve.Friction,
+            delay: 500,
+            iterations: -1, // The value -1 indicates that the animation is played for an unlimited number of times.
+            playMode: PlayMode.AlternateReverse,
+            onFinish: () => {
+              console.info('play end')
+            }
+          }, () => {
+            this.rotateAngle = 90
+          })
+        })
     }.width('100%').margin({ top: 5 })
   }
 }
 ```
 
-![en-us_image_0000001256978345](figures/en-us_image_0000001256978345.gif)
+The figure below shows two buttons in their initial state.
+
+![animation](figures/animation.PNG)
+
+Clicking the first button plays the animation of resizing the button, and clicking the second button plays the animation of rotating the button clockwise by 90 degrees. The figure below shows the two buttons when the animations have finished.
+
+![animation1](figures/animation1.PNG)
diff --git a/en/application-dev/reference/arkui-ts/ts-media-components-video.md b/en/application-dev/reference/arkui-ts/ts-media-components-video.md
index 457fbe710bf5c28a0e9d94b9a25737d806cc08f3..21bb3d6a2890f13215b0f331f3bbab298c0d1de0 100644
--- a/en/application-dev/reference/arkui-ts/ts-media-components-video.md
+++ b/en/application-dev/reference/arkui-ts/ts-media-components-video.md
@@ -22,12 +22,12 @@ Video(value: {src?: string | Resource, currentProgressRate?: number | string | P
 
 **Parameters**
 
-| Name             | Type                                                    | Mandatory| Description                                                    |
-| ------------------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
-| src                 | string \| [Resource](ts-types.md)                   | No  | Path of the video source, which can be a local path or a URL.<br>The video resources can be stored in the **video** or **rawfile** folder under **resources**.<br>The path can include a **dataability://** prefix, which is used to access the video path provided by a Data ability. For details about the path, see [Data Ability Development](../../ability/fa-dataability.md).<br>**NOTE**<br>The supported video formats are MP4, MKV, WebM, and TS. |
-| currentProgressRate | number \| string \| PlaybackSpeed<sup>8+</sup> | No  | Video playback speed.<br>**NOTE**<br>The value of the number type can only be **0.75**, **1.0**, **1.25**, **1.75**, or **2.0**.<br>Default value: **1.0** \| PlaybackSpeed.Speed_Forward_1_00_X |
-| previewUri          | string \| PixelMap<sup>8+</sup> \| [Resource](ts-types.md) | No  | Path of the preview image.                                            |
-| controller          | [VideoController](#videocontroller)                          | No  | Controller.                                                    |
+| Name                | Type                                    | Mandatory  | Description                                    |
+| ------------------- | ---------------------------------------- | ---- | ---------------------------------------- |
+| src                 | string \| [Resource](ts-types.md)        | No   | Path of the video source, which can be a local path or a URL.<br>The video resources can be stored in the **video** or **rawfile** folder under **resources**.<br>The path can include a **dataability://** prefix, which indicates that the path is provided by a Data ability. For details about the path, see [Data Ability Development](../../application-models/dataability-overview.md).<br>**NOTE**<br>The supported video formats are MP4, MKV, WebM, and TS. |
+| currentProgressRate | number \| string \| PlaybackSpeed<sup>8+</sup> | No   | Video playback speed.<br>**NOTE**<br>The value of the number type can only be **0.75**, **1.0**, **1.25**, **1.75**, or **2.0**.<br>Default value: **1.0** \| **PlaybackSpeed.Speed_Forward_1_00_X** |
+| previewUri          | string \| PixelMap<sup>8+</sup> \| [Resource](ts-types.md) | No   | Path of the preview image.                          |
+| controller          | [VideoController](#videocontroller)      | No   | Video controller.                                |
 
 ## PlaybackSpeed<sup>8+</sup>
 
@@ -43,29 +43,29 @@ Video(value: {src?: string | Resource, currentProgressRate?: number | string | P
 
 In addition to the [universal attributes](ts-universal-attributes-size.md), the following attributes are supported.
 
-| Name     | Type                                | Description                                           |
-| --------- | ---------------------------------------- | ----------------------------------------------- |
-| muted     | boolean                                  | Whether to mute the video.<br>Default value: **false**                   |
-| autoPlay  | boolean                                  | Whether to enable auto play.<br>Default value: **false**               |
+| Name       | Type                                    | Description                          |
+| --------- | ---------------------------------------- | ---------------------------- |
+| muted     | boolean                                  | Whether to mute the video.<br>Default value: **false**         |
+| autoPlay  | boolean                                  | Whether to enable auto play.<br>Default value: **false**       |
 | controls  | boolean                                  | Whether to display the video playback control bar.<br>Default value: **true**|
-| objectFit | [ImageFit](ts-basic-components-image.md) | Video scale type.<br>Default value: **Cover**           |
-| loop      | boolean                                  | Whether to repeat the video.<br>Default value: **false**       |
+| objectFit | [ImageFit](ts-basic-components-image.md) | Video scale type.<br>Default value: **Cover**     |
+| loop      | boolean                                  | Whether to repeat the video.<br>Default value: **false**   |
 
 ## Events
 
 In addition to the [universal events](ts-universal-events-click.md), the following events are supported.
 
-| Name                                                        | Description                                                    |
-| ------------------------------------------------------------ | ------------------------------------------------------------ |
-| onStart(event:() =&gt; void)                       | Triggered when the video is played.                                          |
-| onPause(event:() =&gt; void)                       | Triggered when the video playback is paused.                                          |
-| onFinish(event:() =&gt; void)                      | Triggered when the video playback is finished.                                      |
-| onError(event:() =&gt; void)                       | Triggered when the video playback fails.                                      |
+| Name                                      | Description                                    |
+| ---------------------------------------- | ---------------------------------------- |
+| onStart(event:() =&gt; void)   | Triggered when the video is played.                               |
+| onPause(event:() =&gt; void)   | Triggered when the video playback is paused.                               |
+| onFinish(event:() =&gt; void)  | Triggered when the video playback is finished.                             |
+| onError(event:() =&gt; void)   | Triggered when the video playback fails.                             |
 | onPrepared(callback:(event?: { duration: number }) =&gt; void) | Triggered when video preparation is complete. The video duration (in seconds) is obtained from **duration**.|
-| onSeeking(callback:(event?: { time: number }) =&gt; void) | Triggered to report the time (in seconds) when the progress bar is being dragged.                     |
-| onSeeked(callback:(event?: { time: number }) =&gt; void) | Triggered to report the playback time (in seconds) when the user finishes dragging the progress bar.               |
-| onUpdate(callback:(event?: { time: number }) =&gt; void) | Triggered once per 250 ms when the playback progress changes. The unit of the current playback time is second.    |
-| onFullscreenChange(callback:(event?: { fullscreen: boolean }) =&gt; void) | Triggered when the playback mode is switched between full-screen mode and non-full-screen mode. The value **true** means that the playback is in full-screen mode, and **false** means that the playback is non-full-screen mode.    |
+| onSeeking(callback:(event?: { time: number }) =&gt; void) | Triggered to report the time (in seconds) when the progress bar is being dragged.                    |
+| onSeeked(callback:(event?: { time: number }) =&gt; void) | Triggered to report the playback time (in seconds) when the user finishes dragging the progress bar.                 |
+| onUpdate(callback:(event?: { time: number }) =&gt; void) | Triggered once per 250 ms when the playback progress changes. The unit of the current playback time is second.         |
+| onFullscreenChange(callback:(event?: { fullscreen: boolean }) =&gt; void) | Triggered when the playback mode is switched between full-screen mode and non-full-screen mode. The value **true** means that the playback is in full-screen mode, and **false** means that the playback is non-full-screen mode.|
 
 
 ## VideoController
@@ -76,7 +76,7 @@ Defines a **VideoController** object to control one or more videos.
 ### Objects to Import
 
 ```ts
-controller: VideoController = new VideoController();
+controller: VideoController = new VideoController()
 ```
 
 
@@ -90,13 +90,13 @@ Starts playback.
 
 pause(): void
 
-Pauses playback.
+Pauses playback. The current frame is then displayed, and playback will be resumed from this paused position.
 
 ### stop
 
 stop(): void
 
-Stops playback.
+Stops playback. The current frame is then displayed, and playback will restart from the very beginning.
 
 ### setCurrentTime
 
@@ -106,9 +106,9 @@ Sets the video playback position.
 
 **Parameters**
 
-| Name| Type| Mandatory| Description                   |
-| ------ | -------- | ---- | --------------------------- |
-| value  | number   | Yes  | Video playback position, in seconds.|
+| Name  | Type  | Mandatory  | Description          |
+| ----- | ------ | ---- | -------------- |
+| value | number | Yes   | Video playback position, in seconds.|
 
 ### requestFullscreen
 
@@ -118,8 +118,8 @@ Requests full-screen mode.
 
 **Parameters**
 
-| Name  | Type  | Mandatory  | Description   |
-| ----- | ------ | ---- | ------- |
+| Name  | Type   | Mandatory  | Description                 |
+| ----- | ------- | ---- | --------------------- |
 | value | boolean | Yes   | Whether the playback is in full-screen mode.<br>Default value: **false**|
 
 ### exitFullscreen
@@ -136,10 +136,10 @@ Sets the video playback position with the specified seek mode.
 
 **Parameters**
 
-| Name  | Type| Mandatory| Description          |
-| -------- | -------- | ---- | ------------------ |
-| value    | number   | Yes  | Video playback position.|
-| seekMode | SeekMode | Yes  | Seek mode.        |
+| Name     | Type    | Mandatory  | Description          |
+| -------- | -------- | ---- | -------------- |
+| value    | number   | Yes   | Video playback position, in seconds.|
+| seekMode | SeekMode | Yes   | Seek mode.         |
 
 ## SeekMode<sup>8+</sup>
 
@@ -159,77 +159,89 @@ Sets the video playback position with the specified seek mode.
 @Entry
 @Component
 struct VideoCreateComponent {
-  @State srcs: Resource = $rawfile('video1.mp4');
-  @State previewUris: Resource = $r('app.media.img');
-  @State currentProgressRates: number = 1;
-  @State autoPlays: boolean = false;
-  @State controlsss: boolean = true;
-  controller: VideoController = new VideoController();
-  
+  @State videoSrc: Resource = $rawfile('video1.mp4')
+  @State previewUri: Resource = $r('app.media.poster1')
+  @State curRate: PlaybackSpeed = PlaybackSpeed.Speed_Forward_1_00_X
+  @State isAutoPlay: boolean = false
+  @State showControls: boolean = true
+  controller: VideoController = new VideoController()
+
   build() {
     Column() {
       Video({
-        src: this.srcs,
-        previewUri: this.previewUris, 
-        currentProgressRate: this.currentProgressRates,
+        src: this.videoSrc,
+        previewUri: this.previewUri,
+        currentProgressRate: this.curRate,
         controller: this.controller
-      }).width(700).height(500)
-        .autoPlay(this.autoPlays)
-        .controls(this.controlsss)
+      }).width(800).height(600)
+        .autoPlay(this.isAutoPlay)
+        .controls(this.showControls)
         .onStart(() => {
-                  console.error('onStart');
-                })
+          console.info('onStart')
+        })
         .onPause(() => {
-                  console.error('onPause');
-                })
+          console.info('onPause')
+        })
         .onFinish(() => {
-                  console.error('onFinish');
-                })
+          console.info('onFinish')
+        })
         .onError(() => {
-                  console.error('onFinish');
-                })
+          console.info('onFinish')
+        })
         .onPrepared((e) => {
-                    console.error('onPrepared is ' + e.duration);
-                })
+          console.info('onPrepared is ' + e.duration)
+        })
         .onSeeking((e) => {
-                    console.error('onSeeking is ' + e.time);
-                })
+          console.info('onSeeking is ' + e.time)
+        })
         .onSeeked((e) => {
-                    console.error('onSeekedis ' + e.time);
-                })
+          console.info('onSeeked is ' + e.time)
+        })
         .onUpdate((e) => {
-                    console.error('onUpdateis ' + e.time);
-                })
+          console.info('onUpdate is ' + e.time)
+        })
+      
       Row() {
-        Button("src").onClick(() => {
-            this.srcs = $rawfile('video2.mp4');
-        });
-        Button("previewUri").onClick(() => {
-            this.previewUris = $r('app.media.img1');
-        });
-        Button("controlsss").onClick(() => {
-          this.controlsss = !this.controlsss;
-        });
+        Button('src').onClick(() => {
+          this.videoSrc = $rawfile('video2.mp4') // Switch the video source.
+        }).margin(5)
+        Button('previewUri').onClick(() => {
+          this.previewUri = $r('app.media.poster2') // Switch the preview image.
+        }).margin(5)
+        Button('controls').onClick(() => {
+          this.showControls = !this.showControls // Specify whether to show the control bar.
+        }).margin(5)
       }
 
       Row() {
-        Button("start").onClick(() => {
-          this.controller.start();
-        });
-        Button("pause").onClick(() => {
-          this.controller.pause();
-        });
-        Button("stop").onClick(() => {
-          this.controller.stop();
-        });
+        Button('start').onClick(() => {
+          this.controller.start() // Start playback.
+        }).margin(5)
+        Button('pause').onClick(() => {
+          this.controller.pause() // Pause playback.
+        }).margin(5)
+        Button('stop').onClick(() => {
+          this.controller.stop() // Stop playback.
+        }).margin(5)
+        Button('setTime').onClick(() => {
+          this.controller.setCurrentTime(10, SeekMode.Accurate) // Seek to the 10s position of the video.
+        }).margin(5)
       }
 
       Row() {
-        Button("setCurrentTime").onClick(() => {
-          this.controller.setCurrentTime(9, SeekMode.Accurate);
-        });
+        Button('rate 0.75').onClick(() => {
+          this.curRate = PlaybackSpeed.Speed_Forward_0_75_X // Play the video at the 0.75x speed.
+        }).margin(5)
+        Button('rate 1').onClick(() => {
+          this.curRate = PlaybackSpeed.Speed_Forward_1_00_X // Play the video at the 1x speed.
+        }).margin(5)
+        Button('rate 2').onClick(() => {
+          this.curRate = PlaybackSpeed.Speed_Forward_2_00_X // Play the video at the 2x speed.
+        }).margin(5)
       }
     }
   }
 }
 ```
+
+<!--no_check-->
\ No newline at end of file
diff --git a/en/application-dev/reference/arkui-ts/ts-transition-animation-shared-elements.md b/en/application-dev/reference/arkui-ts/ts-transition-animation-shared-elements.md
index c393bf5812f9508448891111012d6c839cf6fb5c..96d2620e251877f5e183e9a085708a634d4e850a 100644
--- a/en/application-dev/reference/arkui-ts/ts-transition-animation-shared-elements.md
+++ b/en/application-dev/reference/arkui-ts/ts-transition-animation-shared-elements.md
@@ -12,12 +12,12 @@ Shared element transition can be used for transition between pages, for example,
 
 | Name            | Parameters                                                        | Description                                                    |
 | ---------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| sharedTransition | id: string,<br>{<br>duration?: number,<br>curve?: Curve \| string,<br>delay?: number,<br>motionPath?: <br>{<br>path: string,<br>form?: number,<br>to?: number,<br>rotatable?: boolean<br>},<br>zIndex?: number,<br>type?: [SharedTransitionEffectType](ts-appendix-enums.md#sharedtransitioneffecttype)<br>} | Transition of the shared element. If the same **id** value is configured for a component on the two pages, this component is considered as a shared element of the pages. If the **id** value is an empty string, no transition will be applied to the component.<br>- **id**: component ID.<br>- **duration**: Animation duration, in ms. The default duration is 1000 ms.<br>- **curve**: animation curve. The default curve is **Linear**. For details about the valid values, see [Curve](ts-animatorproperty.md).<br>- **delay**: Delay of animation playback, in ms. By default, the playback is not delayed.<br>- **motionPath**: motion path information.<br>- **path**: path.<br>- **from**: start value.<br>- **to**: end value.<br>- **rotatable**: whether to rotate.<br>- **zIndex**: z-axis.<br>- **type**: animation type.|
+| sharedTransition | id: string,<br>{<br> duration?: number,<br> curve?: Curve \| string,<br> delay?: number,<br> motionPath?: <br>{<br> path: string,<br> form?: number,<br> to?: number,<br> rotatable?: boolean<br>},<br>zIndex?: number,<br>type?: [SharedTransitionEffectType](ts-appendix-enums.md#sharedtransitioneffecttype)<br>} | Transition of the shared element. If the same **id** value is configured for a component on the two pages, this component is considered as a shared element of the pages. If the **id** value is an empty string, no transition will be applied to the component.<br>- **id**: component ID.<br>- **duration**: animation duration, in ms. The default duration is 1000 ms.<br>- **curve**: animation curve. The default curve is **Linear**. For details about the valid values, see [Curve](ts-animatorproperty.md).<br>- **delay**: Delay of animation playback, in ms. By default, the playback is not delayed.<br>- **motionPath**: motion path information. For details, see [Motion Path Animation](ts-motion-path-animation.md).<br>- **path**: path.<br>- **from**: start value.<br>- **to**: end value.<br>- **rotatable**: whether to rotate.<br>- **zIndex**: z-axis.<br>- **type**: animation type.|
 
 
 ## Example
 
-The example implements the custom transition of a shared image during redirection from one page to another, which is triggered by a click on the image.
+  The example implements the custom transition of a shared image during redirection from one page to another, which is triggered by a click on the image.
 
 ```ts
 // xxx.ets
@@ -27,20 +27,14 @@ struct SharedTransitionExample {
   @State active: boolean = false
 
   build() {
-    List() {
-      ListItem() {
-        Row() {
-          Navigator({ target: 'pages/common/Animation/transAnimation/PageB', type: NavigationType.Push }) {
-            Image($r('app.media.ic_health_heart')).width(50).height(50)
-              .sharedTransition('sharedImage1', { duration: 800, curve: Curve.Linear, delay: 100 })
-          }.padding({ left: 10 })
-          .onClick(() => {
-            this.active = true
-          })
-
-          Text('SharedTransition').width(80).height(80).textAlign(TextAlign.Center)
-        }
-      }
+    Column() {
+      Navigator({ target: 'pages/PageB', type: NavigationType.Push }) {
+        Image($r('app.media.ic_health_heart')).width(50).height(50)
+          .sharedTransition('sharedImage', { duration: 800, curve: Curve.Linear, delay: 100 })
+      }.padding({ left: 20, top: 20 })
+      .onClick(() => {
+        this.active = true
+      })
     }
   }
 }
@@ -50,14 +44,13 @@ struct SharedTransitionExample {
 // PageB.ets
 @Entry
 @Component
-struct BExample {
-
+struct pageBExample {
   build() {
     Stack() {
-      Image($r('app.media.ic_health_heart')).width(150).height(150).sharedTransition('sharedImage1')
-    }.width('100%').height(400)
+      Image($r('app.media.ic_health_heart')).width(150).height(150).sharedTransition('sharedImage')
+    }.width('100%').height('100%')
   }
 }
 ```
 
-![en-us_image_0000001211898494](figures/en-us_image_0000001211898494.gif)
+![shared](figures/shared.gif)
diff --git a/en/application-dev/reference/arkui-ts/ts-types.md b/en/application-dev/reference/arkui-ts/ts-types.md
index c2f9bc37bead729dffa06631cd3ef49e99d378f2..ffc46108ad8944d16f354ef022581cca6494f0a0 100644
--- a/en/application-dev/reference/arkui-ts/ts-types.md
+++ b/en/application-dev/reference/arkui-ts/ts-types.md
@@ -142,12 +142,12 @@ The **LengthConstrain** type is used to describe the maximum and minimum lengths
 
 The **Font** type is used to set the text style.
 
-| Name    | Type                                      | Mandatory  | Description                                      |
-| ------ | ---------------------------------------- | ---- | ---------------------------------------- |
-| size   | [Length](#length)                        | No   | Font size. If the value is of the number type, the unit fp is used.         |
-| weight | [FontWeight](ts-appendix-enums.md#fontweight) \| number \| string | No   | Font weight. For the number type, the value ranges from 100 to 900, at an interval of 100. The default value is **400**. A larger value indicates a larger font weight.|
-| family | string \| [Resource](#resource)          | No   | Font family of the text. Use commas (,) to separate multiple fonts. The priority of the fonts is the sequence in which they are placed. An example value is **'Arial, sans-serif'**.|
-| style  | [FontStyle](ts-appendix-enums.md#fontstyle) | No   | Font style.                              |
+| Name  | Type                                                        | Mandatory| Description                                                        |
+| ------ | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
+| size   | [Length](#length)                                            | No  | Font size. If the value is of the number type, the unit fp is used. The value cannot be a percentage.|
+| weight | [FontWeight](ts-appendix-enums.md#fontweight) \| number \| string | No  | Font weight. For the number type, the value ranges from 100 to 900, at an interval of 100. The default value is **400**. A larger value indicates a larger font weight.|
+| family | string \| [Resource](#resource)                              | No  | Font family of the text. Use commas (,) to separate multiple fonts. The priority of the fonts is the sequence in which they are placed. An example value is **'Arial, sans-serif'**. Currently, only the **'sans-serif'** font is supported.|
+| style  | [FontStyle](ts-appendix-enums.md#fontstyle)                  | No  | Font style.                                        |
 
 ## Area<sup>8+</sup>
 
diff --git a/en/application-dev/reference/arkui-ts/ts-universal-attributes-flex-layout.md b/en/application-dev/reference/arkui-ts/ts-universal-attributes-flex-layout.md
index da9f86c336021bc5f7cc10b57803ef7ef2371f2f..9234810c88d381fbeda3bbc8e9b79a244d5f74ac 100644
--- a/en/application-dev/reference/arkui-ts/ts-universal-attributes-flex-layout.md
+++ b/en/application-dev/reference/arkui-ts/ts-universal-attributes-flex-layout.md
@@ -10,10 +10,10 @@
 
 | Name        | Type                                    | Description                                      |
 | ---------- | ---------------------------------------- | ---------------------------------------- |
-| flexBasis  | number \| string                         | Base size of a component in the main axis of the parent container.<br>Default value: **'auto'** (indicating that the base size of the component in the main axis is the original size of the component)|
+| flexBasis  | number \| string                         | Base size of the component in the main axis of the parent container.<br>Default value: **'auto'** (indicating that the base size of the component in the main axis is the original size of the component)<br>This attribute cannot be set in percentage.|
 | flexGrow   | number                                   | Percentage of the parent container's remaining space that is allocated to the component.<br>Default value: **0**      |
 | flexShrink | number                                   | Percentage of the parent container's shrink size that is allocated to the component.<br>When the parent container is **\<Row>** or **\<Column>**, the default value is **0**.<br> When the parent container is **\<Flex>**, the default value is **1**.      |
-| alignSelf  | [ItemAlign](ts-appendix-enums.md#itemalign) | Alignment mode of the child components along the cross axis, which overwrites the default **alignItems** configuration in the parent container.<br>Default value: **ItemAlign.Auto**|
+| alignSelf  | [ItemAlign](ts-appendix-enums.md#itemalign) | Alignment mode of the child components along the cross axis of the parent container. The setting overwrites the **alignItems** setting of the parent container.<br>Default value: **ItemAlign.Auto**|
 
 
 ## Example
@@ -30,82 +30,79 @@ struct FlexExample {
       // The value of flexBasis() can be 'auto' or a number, which is equivalent to .width()/.height().
       Flex() {
         Text('flexBasis(100)')
-          .flexBasis('100')
+          .flexBasis(100) // The width is 100 vp.
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xF5DEB3)
           .textAlign(TextAlign.Center)
-        Text('flexBasis("auto")')
-          .flexBasis('auto')
+        Text(`flexBasis('auto')`)
+          .flexBasis('auto') // The width is 60% of the original width.
           .width('60%')
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xD2B48C)
           .textAlign(TextAlign.Center)
       }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)
 
       Text('flexGrow').fontSize(9).fontColor(0xCCCCCC).width('90%')
-      // Percentage of the remaining space
-      // flexGrow() specifies the percentage of the remaining space allocated to the component.
+      // flexGrow() indicates the percentage of the remaining space allocated to the component.
       Flex() {
         Text('flexGrow(2)')
-          .flexGrow(2)
+          .flexGrow(2) // The width allocated to the <Text> component is 2/3 of the remaining width of the parent container.
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xF5DEB3)
           .textAlign(TextAlign.Center)
         Text('flexGrow(1)')
-          .flexGrow(1)
+          .flexGrow(1) // The width allocated to the <Text> component is 1/3 of the remaining width of the parent container.
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xD2B48C)
           .textAlign(TextAlign.Center)
       }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)
 
       Text('flexShrink').fontSize(9).fontColor(0xCCCCCC).width('90%')
-      // flexShrink() specifies the percentage of the shrink size allocated to the component.
-      // The ratio of text1 is 0, and the default values of other parameters are 1. If the components cannot be completely displayed, the last two components are shrunk proportionally. The first component is not shrunk.
+      // flexShrink() indicates the percentage of the shrink size allocated to the component.
+      // The value is 0 for the first <Text> component and 1 for the other two <Text> components. This means that, if the components cannot be completely displayed in the parent container, the latter two are shrunk proportionally, while the former is not shrunk.
       Flex({ direction: FlexDirection.Row }) {
         Text('flexShrink(0)')
           .flexShrink(0)
           .width('50%')
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xF5DEB3)
           .textAlign(TextAlign.Center)
-        Text('no flexShrink')
+        Text('default flexShrink') // The default value is 1.
           .width('40%')
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xD2B48C)
           .textAlign(TextAlign.Center)
-        Text('flexShrink(2)')
-          .flexShrink(2)
+        Text('flexShrink(1)')
+          .flexShrink(1)
           .width('40%')
           .height(100)
-          .lineHeight(70)
           .backgroundColor(0xF5DEB3)
           .textAlign(TextAlign.Center)
       }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)
 
       Text('alignSelf').fontSize(9).fontColor(0xCCCCCC).width('90%')
-      // alignSelf() overwrites the default alignItems configuration in the flex layout.
+      // The alignSelf setting overrides the alignItems setting of the parent container.
       Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center }) {
-        Text('no alignSelf,height:80').width('33%').height(80)
-          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
-        Text('alignSelf stretch')
-          .alignSelf(ItemAlign.Stretch)
+        Text('no alignSelf,height:70')
           .width('33%')
-          .height(80)
-          .lineHeight(70)
+          .height(70)
+          .backgroundColor(0xF5DEB3)
+          .textAlign(TextAlign.Center)
+        Text('alignSelf End')
+          .alignSelf(ItemAlign.End)
+          .width('33%')
+          .height(70)
           .backgroundColor(0xD2B48C)
           .textAlign(TextAlign.Center)
-        Text('no alignSelf,height:100').width('34%').height(100)
-          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
+        Text('no alignSelf,height:100%')
+          .width('34%')
+          .height('100%')
+          .backgroundColor(0xF5DEB3)
+          .textAlign(TextAlign.Center)
       }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)
     }.width('100%').margin({ top: 5 })
   }
 }
 ```
 
-![en-us_image_0000001212378394](figures/en-us_image_0000001212378394.png)
+![flex](figures/flex.PNG)
diff --git a/en/application-dev/reference/arkui-ts/ts-universal-attributes-restoreId.md b/en/application-dev/reference/arkui-ts/ts-universal-attributes-restoreId.md
index 644fbdc9fe511bed688dcaaa57d87cb7b628dee3..8696019fb837eb01f344297da9397406f4d1f4a1 100644
--- a/en/application-dev/reference/arkui-ts/ts-universal-attributes-restoreId.md
+++ b/en/application-dev/reference/arkui-ts/ts-universal-attributes-restoreId.md
@@ -10,16 +10,16 @@ The **restoreId** attribute identifies a component in distributed migration scen
 
 | Name| Type| Description|
 | -------- | -------- | -------- |
-| restoreId | number | ID of the component used for matching during distributed migration. This ID must be unique within an application.|
+| restoreId | number | ID of the component used for device matching during distributed migration. This ID must be unique within an application.|
 
 ## Components with Distributed Migration Support
 
-| Name| Initial Version| Migration Status|
+| Name| Initial API Version| Migration Status|
 | -------- | -------- | -------- |
-| List | 8 | The sequence number of the item displayed on the top of the current device will be migrated to the remote device. After the migration, the item is completely displayed on the top of the remote device.|
-| Grid | 9 | The sequence number of the item displayed on the top of the current device will be migrated to the remote device. After the migration, the item is completely displayed on the top of the remote device. The position of the scrollbar cannot be migrated.|
-| Scroll | 9 | The absolute distance with the top edge for scrolling will be migrated. Due to layout inconsistency resulting from differences in the display specifications between devices, the migration effect may be affected.|
-| TextArea | 9 | The text content and the position of the caret will be migrated.|
+| List      | 8 | The index of the list item displayed at the top of the list on the current device will be migrated to the remote device. After the migration, the list item that matches the index is displayed at the top of the list on the remote device.|
+| Grid      | 9 | The index of the grid item displayed at the top of the grid on the current device will be migrated to the remote device. After the migration, the grid item that matches the index is displayed at the top of the grid on the remote device. The position of the scrollbar cannot be migrated.|
+| Scroll    | 9 | The absolute distance with the top edge for scrolling will be migrated. Due to layout inconsistency resulting from differences in the display specifications between devices, the migration effect may be affected.|
+| TextArea  | 9 | The text content and the position of the caret will be migrated.|
 | TextInput | 9 | The text content and the position of the caret will be migrated.|
 
 ## Example
@@ -39,7 +39,6 @@ struct RestoreIdExample {
               .width('100%')
               .height(100)
               .fontSize(16)
-              .fontColor(0xFFFFFF)
               .textAlign(TextAlign.Center)
               .borderRadius(10)
               .backgroundColor(Color.Pink)
diff --git a/en/application-dev/reference/arkui-ts/ts-universal-attributes-sharp-clipping.md b/en/application-dev/reference/arkui-ts/ts-universal-attributes-sharp-clipping.md
index b0d33d1ca165b386a920c0a9f2f1e7c8db534736..3aaeb64451a672c5eb662fb4f79f166fd7afcab5 100644
--- a/en/application-dev/reference/arkui-ts/ts-universal-attributes-sharp-clipping.md
+++ b/en/application-dev/reference/arkui-ts/ts-universal-attributes-sharp-clipping.md
@@ -10,10 +10,10 @@ Shape clipping changes the visible portion of a component through clipping or ma
 ## Attributes
 
 
-| Name | Type                                    | Description                                 |
+| Name   | Type                                    | Description                                 |
 | -----| ------------------------------------------ | ------------------------------------ |
-| clip | [Circle](ts-drawing-components-circle.md) \| [Ellipse](ts-drawing-components-ellipse.md) \| [Path](ts-drawing-components-path.md) \| [Rect](ts-drawing-components-rect.md) \| boolean | Specifies a clip mode. The value **Shape** indicates that the current component is cropped based on the specified shape. The value **boolean** specifies whether to clip the component based on the edge outline.<br>Default value: **false**|
-| mask | [Circle](ts-drawing-components-circle.md) \| [Ellipse](ts-drawing-components-ellipse.md) \| [Path](ts-drawing-components-path.md) \| [Rect](ts-drawing-components-rect.md) | Adds a mask of the specified shape to the current component.|
+| clip | [Circle](ts-drawing-components-circle.md) \| [Ellipse](ts-drawing-components-ellipse.md) \| [Path](ts-drawing-components-path.md) \| [Rect](ts-drawing-components-rect.md) \| boolean | Clip mode. If the value is a shape, the component is clipped based on the specified shape. If the value is of the Boolean type, it specifies whether to clip the component based on the edge outline of the parent container.<br>Default value: **false**|
+| mask | [Circle](ts-drawing-components-circle.md) \| [Ellipse](ts-drawing-components-ellipse.md) \| [Path](ts-drawing-components-path.md) \| [Rect](ts-drawing-components-rect.md) | Mask of the specified shape to add to the component.|
 
 
 ## Example
@@ -24,34 +24,33 @@ Shape clipping changes the visible portion of a component through clipping or ma
 @Component
 struct ClipAndMaskExample {
   build() {
-    Column({ space: 5 }) {
-      Text('clip').fontSize(9).width('90%').fontColor(0xCCCCCC)
-      // Clip the image by using a circle with a diameter of 280px.
-      Image($r('app.media.example'))
-        .clip(new Circle({ width: 80, height: 80 }))
-        .width('500px').height('280px')
-
+    Column({ space: 15 }) {
+      Text('clip').fontSize(12).width('75%').fontColor('#DCDCDC')
       Row() {
-        Image($r('app.media.example')).width('500px').height('280px')
+        Image($r('app.media.testImg')).width('500px').height('280px')
       }
-      .clip(true)
+      .clip(true) // If clip is not set to true, the image is not confined by the rounded corners of the <Row> component and may extend beyond the <Row> component.
       .borderRadius(20)
+      // Clip the image based on a circle with a diameter of 280 px.
+      Image($r('app.media.testImg'))
+        .clip(new Circle({ width: '280px', height: '280px' }))
+        .width('500px').height('280px')
 
-      Text('mask').fontSize(9).width('90%').fontColor(0xCCCCCC)
-      // Add a 500 px x 280 px mask to the image.
-      Image($r('app.media.example'))
+      Text('mask').fontSize(12).width('75%').fontColor('#DCDCDC')
+      // Add a 500 px x 280 px square mask to the image.
+      Image($r('app.media.testImg'))
         .mask(new Rect({ width: '500px', height: '280px' }).fill(Color.Gray))
         .width('500px').height('280px')
 
-      // Add a 280 px x 280 px circle mask to the image.
-      Image($r('app.media.example'))
+      // Add a 280 px x 280 px circular mask to the image.
+      Image($r('app.media.testImg'))
         .mask(new Circle({ width: '280px', height: '280px' }).fill(Color.Gray))
-        .width('500px').height('281px')
+        .width('500px').height('280px')
     }
     .width('100%')
-    .margin({ top: 5 })
+    .margin({ top: 15 })
   }
 }
 ```
 
-![en-us_image_0000001212218452](figures/en-us_image_0000001212218452.png)
+![clipAndMask](figures/clipAndMask.PNG)
diff --git a/en/application-dev/ui/figures/en-us_image_0000001063148757.gif b/en/application-dev/ui/figures/en-us_image_0000001063148757.gif
new file mode 100644
index 0000000000000000000000000000000000000000..f59b87e0afc79eafbddef8de2a264cf2f41b97c7
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001063148757.gif differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001071134933.png b/en/application-dev/ui/figures/en-us_image_0000001071134933.png
new file mode 100644
index 0000000000000000000000000000000000000000..d39e5026790f8d85866b0e293f6b53ad455ff1c4
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001071134933.png differ
diff --git a/en/application-dev/ui/figures/en-us_image_00000011.gif b/en/application-dev/ui/figures/en-us_image_00000011.gif
new file mode 100644
index 0000000000000000000000000000000000000000..9dd23bf2e649eb1e9c7a71281a8f26dcd90d6f26
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_00000011.gif differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001170167520.png b/en/application-dev/ui/figures/en-us_image_0000001170167520.png
new file mode 100644
index 0000000000000000000000000000000000000000..2441a46f00b3083dfaa8ec2dcdb1760aa7e2aeb7
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001170167520.png differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001176075554.gif b/en/application-dev/ui/figures/en-us_image_0000001176075554.gif
new file mode 100644
index 0000000000000000000000000000000000000000..16e7ff213bd5caf5a9802001d3ced2996c66e0bc
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001176075554.gif differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001204538065.png b/en/application-dev/ui/figures/en-us_image_0000001204538065.png
new file mode 100644
index 0000000000000000000000000000000000000000..b775a2bf408dd710861afa0dfa9f756d5181e811
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001204538065.png differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001267647885.png b/en/application-dev/ui/figures/en-us_image_0000001215113569.png
similarity index 100%
rename from en/application-dev/ui/figures/en-us_image_0000001267647885.png
rename to en/application-dev/ui/figures/en-us_image_0000001215113569.png
diff --git a/en/application-dev/ui/figures/en-us_image_0000001217168141.gif b/en/application-dev/ui/figures/en-us_image_0000001217168141.gif
new file mode 100644
index 0000000000000000000000000000000000000000..75abb6f81315b55e677acd8c4d943b2f22d76fff
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001217168141.gif differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001220635011.gif b/en/application-dev/ui/figures/en-us_image_0000001220635011.gif
new file mode 100644
index 0000000000000000000000000000000000000000..0be34d5b9598c7e03132b08e030fd71d977886b5
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001220635011.gif differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001223127724.png b/en/application-dev/ui/figures/en-us_image_0000001223127724.png
deleted file mode 100644
index 5000709da6dfadee24e10fdbd679b3a28e46578b..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001223127724.png and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001223127752.gif b/en/application-dev/ui/figures/en-us_image_0000001223127752.gif
deleted file mode 100644
index d669cf40b97891ba3853be28574dceae172fe138..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001223127752.gif and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001223287696.gif b/en/application-dev/ui/figures/en-us_image_0000001223287696.gif
deleted file mode 100644
index 2283e46371317539004c0007886500c1a81dd83a..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001223287696.gif and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001223287708.gif b/en/application-dev/ui/figures/en-us_image_0000001223287708.gif
deleted file mode 100644
index fb5399a47b281cb586dbc4460fc0db6381d1e4ab..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001223287708.gif and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001227701867.gif b/en/application-dev/ui/figures/en-us_image_0000001227701867.gif
new file mode 100644
index 0000000000000000000000000000000000000000..0cbcaa3ff368a2a2ad63c8729acc0f66ae874437
Binary files /dev/null and b/en/application-dev/ui/figures/en-us_image_0000001227701867.gif differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001267647881.png b/en/application-dev/ui/figures/en-us_image_0000001267647881.png
deleted file mode 100644
index a84303ae2d68affe3f5702317d9f2bf951c90698..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001267647881.png and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001267647889.gif b/en/application-dev/ui/figures/en-us_image_0000001267647889.gif
deleted file mode 100644
index f470f5261becb6c2d7b30f691a0794db2b1feb93..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001267647889.gif and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001267887869.gif b/en/application-dev/ui/figures/en-us_image_0000001267887869.gif
deleted file mode 100644
index 26152ef9f22387729561bdddb9fa7d50019e08cb..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001267887869.gif and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001276003541.gif b/en/application-dev/ui/figures/en-us_image_0000001276003541.gif
deleted file mode 100644
index 7d8da86f2f1cf71ca9bc5d6cb65564bb64ae5fd1..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001276003541.gif and /dev/null differ
diff --git a/en/application-dev/ui/figures/en-us_image_0000001276162773.gif b/en/application-dev/ui/figures/en-us_image_0000001276162773.gif
deleted file mode 100644
index 9e313e1e87059572aa036b06881381da7b070641..0000000000000000000000000000000000000000
Binary files a/en/application-dev/ui/figures/en-us_image_0000001276162773.gif and /dev/null differ
diff --git a/en/application-dev/ui/js-framework-syntax-css.md b/en/application-dev/ui/js-framework-syntax-css.md
index 46fcc170df8f4688da555b6874a6842c1c6806e8..29ae5f820d24313982afda37f47ff0d613da256f 100644
--- a/en/application-dev/ui/js-framework-syntax-css.md
+++ b/en/application-dev/ui/js-framework-syntax-css.md
@@ -1,28 +1,27 @@
 # CSS
 
-
 Cascading Style Sheets (CSS) is a language used to describe the HML page structure. All HML components have default styles. You can customize styles for these components using CSS to design various pages. For details, see [Universal Styles](../reference/arkui-js/js-components-common-styles.md).
 
 ## Size Unit
 
-- Logical px set by \<length>:
-   - The default logical screen width is 720 px (for details, see the "window" section in [config.json](js-framework-js-tag.md)). Your page will be scaled to fit the actual width of the screen. For example, on a screen with the actual width of 1440 physical px, 100 px is displayed on 200 physical px, with all sizes doubled from 720 px to 1440 px.
-   - If you set autoDesignWidth to true (for details, see the "window" section in [config.json](js-framework-js-tag.md)), the logical px are scaled based on the screen density. For example, if the screen density is 3x, 100 px will be rendered on 300 physical px. This approach is recommended when your application needs to adapt to multiple devices.
+- Logical px set by **\<length>**:
+
+   - The default logical screen width is 720 px (for details, see the **"window"** section in **[config.json](js-framework-js-tag.md)**). Your page will be scaled to fit the actual width of the screen. For example, on a screen with the actual width of 1440 physical px, 100 px is displayed on 200 physical px, with all sizes doubled from 720 px to 1440 px.
+   - If you set **autoDesignWidth** to **true** (for details, see the **"window"** section in **[config.json](js-framework-js-tag.md)**), the logical px are scaled based on the screen density. For example, if the screen density is 3x, 100 px will be rendered on 300 physical px. This approach is recommended when your application needs to adapt to multiple devices.
 
-- Percentage set by &lt;percentage&gt;: The component size is represented by its percentage of the parent component size. For example, if the width &lt;percentage&gt; of a component is set to 50%, the width of the component is half of its parent component's width.
+- Percentage set by **\<percentage>**: The component size is represented by its percentage of the parent component size. For example, if the width **\<percentage>** of a component is set to **50%**, the width of the component is half of its parent component's width.
 
 
 ## Style Import
 
-CSS files can be imported using the @import statement. This facilitates module management and code reuse.
+CSS files can be imported using the **@import** statement. This facilitates module management and code reuse.
 
 
 ## Style Declaration
 
-The .css file with the same name as the .hml file in each page directory describes the styles of components on the HML page, determining how the components will be displayed.
+The **.css** file with the same name as the **.hml** file in each page directory describes the styles of components on the HML page, determining how the components will be displayed.
 
-1. Internal style: The style and class attributes can be used to specify the component style. Example:
-  
+1. Internal style: The **style** and **class** attributes can be used to specify the component style. Example:
    ```html
    <!-- index.hml -->
    <div class="container">
@@ -30,7 +29,6 @@ The .css file with the same name as the .hml file in each page directory describ
    </div>
    ```
 
-   
    ```css
    /* index.css */
    .container {
@@ -38,8 +36,7 @@ The .css file with the same name as the .hml file in each page directory describ
    }
    ```
 
-2. External style files: You need to import the files. For example, create a style.css file in the common directory and import the file at the beginning of index.css.
-  
+2. External style files: You need to import the files. For example, create a **style.css** file in the **common** directory and import the file at the beginning of **index.css**.
    ```css
    /* style.css */
    .title {
@@ -47,7 +44,6 @@ The .css file with the same name as the .hml file in each page directory describ
    }
    ```
 
-   
    ```css
    /* index.css */
    @import '../../common/style.css';
@@ -61,19 +57,18 @@ The .css file with the same name as the .hml file in each page directory describ
 
 A CSS selector is used to select elements for which styles need to be added to. The following table lists the supported selectors.
 
-| Selector | Example | Description |
-| -------- | -------- | -------- |
-| .class | .container | Selects all components whose class is container. |
-| \#id | \#titleId | Selects all components whose id is titleId. |
-| tag | text | Selects all  &lt;text&gt; components. |
-| , | .title, .content | Selects all components whose class is title or content. |
-| \#id .class tag | \#containerId .content text | Selects all grandchild **\<text>** components whose grandparent components are identified as containerId and whose parent components are of the content class. To select child components, use > to replace the space between **\#id** and **.class**, for example, **\#containerId>.content**. |
-
-The following is an example:
+| Selector                      | Example                                   | Description                                    |
+| ------------------------- | ------------------------------------- | ---------------------------------------- |
+| .class                    | .container                            | Selects all components whose **class** is **container**.               |
+| \#id                      | \#titleId                             | Selects all components whose **id** is **titleId**.                    |
+| tag                       | text                                  | Selects all **\<text>** components.                             |
+| ,                         | .title, .content                 | Selects all components whose **class** is **title** or **content**.   |
+| \#id .class tag | \#containerId .content text | Selects all grandchild **\<text>** components whose grandparent components are identified as **containerId** and whose parent components are of the **content** class. To select child components, use **>** to replace the space between **\#id** and **.class**, for example, **\#containerId>.content**.|
 
+Example:
 
 ```html
-<!-- Page layoutxxx.hml -->
+<!-- Pagelayoutexample.hml -->
 <div id="containerId" class="container">
   <text id="titleId" class="title">Title</text>
   <div class="content">
@@ -82,18 +77,17 @@ The following is an example:
 </div>
 ```
 
-
 ```css
-/* Page style xxx.css */
+/* Pagestyleexample.css */
 /* Set the style for all <div> components. */
 div {
   flex-direction: column;
 }
-/* Set the style for the component whose class is title.*/
+/* Set the style for the components whose class is title. */
 .title {
   font-size: 30px;
 }
-/* Set the style for the component whose id is contentId. */
+/* Set the style for the components whose id is contentId. */
 #contentId {
   font-size: 20px;
 }
@@ -101,12 +95,12 @@ div {
 .title, .content {
   padding: 5px;
 }
-/* Set the style for all texts of components whose class is container.*/
+/* Set the style for all texts of components whose class is container. */
 .container text {
-  color: \#007dff;
+  color: #007dff;
 }
-/* Set the style for direct descendant texts of components whose class is container.*/
-.container &gt; text {
+/* Set the style for direct descendant texts of components whose class is container. */
+.container > text {
   color: #fa2a2d;
 }
 ```
@@ -115,31 +109,29 @@ The above style works as follows:
 
 ![en-us_image_0000001267607889](figures/en-us_image_0000001267607889.png)
 
-In the preceding example, .container text sets title and content to blue, and .container > text sets title to red. The two styles have the same priority, but .container > text declares the style later and overwrites the former style. (For details about the priority, see [Selector Specificity](#selector-specificity).)
+In the preceding example, **.container text** sets title and content to blue, and **.container > text** sets title to red. The two styles have the same priority, but **.container > text** declares the style later and overwrites the former style. For details about the priority, see [Selector Specificity](#selector-specificity).
 
 ## Selector Specificity
 
-The specificity rule of the selectors complies with the W3C rule, which is only available for inline styles, id, class, tag, grandchild components, and child components. (Inline styles are those declared in the style attribute.)
+The specificity rule of the selectors complies with the W3C rule, which is only available for inline styles, **id**, **class**, **tag**, grandchild components, and child components. (Inline styles are those declared in the **style** attribute.)
 
-When multiple selectors point to the same element, their priorities are as follows (in descending order): inline style > id > class > tag.
+When multiple selectors point to the same element, their priorities are as follows (in descending order): inline style > **id** > **class** > **tag**.
 
 
 ## Pseudo-classes
 
-A CSS pseudo-class is a keyword added to a selector that specifies a special state of the selected element(s). For example, :disabled can be used to select the element whose disabled attribute is true.
-
-In addition to a single pseudo-class, a combination of pseudo-classes is supported. For example, :focus:checked selects the element whose focus and checked attributes are both set to true. The following table lists the supported single pseudo-class in descending order of priority.
-
+A CSS pseudo-class is a keyword added to a selector that specifies a special state of the selected elements. For example, **:disabled** can be used to select the element whose **disabled** attribute is **true**.
 
-| Pseudo-class | Available Components | Description |
-| -------- | -------- | -------- |
-| :disabled | Components that support the disabled attribute | Selects the element whose disabled attribute is changed to true (unavailable for animation attributes). |
-| :active | Components that support the click event | Selects the element activated by a user. For example, a pressed button or a selected tab-bar (unavailable for animation attributes).  |
-| :waiting | button | Selects the element whose waiting attribute is true (unavailable for animation attributes). |
-| :checked | input[type="checkbox", type="radio"], and switch | Selects the element whose checked attribute is true (unavailable for animation attributes).  |
+In addition to a single pseudo-class, a combination of pseudo-classes is supported. For example, **:focus:checked** selects the element whose **focus** and **checked** attributes are both set to **true**. The following table lists the supported single pseudo-class in descending order of priority.
 
-The following is an example for you to use the **:active** pseudo-class to control the style when a user presses the button.
+| Pseudo-class       | Available Components                                    | Description                                      |
+| --------- | ---------------------------------------- | ---------------------------------------- |
+| :disabled | Components that support the **disabled** attribute                         | Selects the element whose **disabled** attribute is changed to **true** (unavailable for animation attributes).     |
+| :active   | Components that support the click event                       | Selects the element activated by a user. For example, a pressed button or a selected **tab-bar** (unavailable for animation attributes).|
+| :waiting  | button                                   | Selects the element whose **waiting** attribute is **true** (unavailable for animation attributes).        |
+| :checked  | input[type="checkbox", type="radio"], switch | Selects the element whose **checked** attribute is **true** (unavailable for animation attributes).        |
 
+The following is an example for you to use the **:active** pseudo-class to control the style when a user presses the button. 
 
 ```html
 <!-- index.hml -->
@@ -151,32 +143,29 @@ The following is an example for you to use the **:active** pseudo-class to contr
 ```css
 /* index.css */
 .button:active {
-  background-color: #888888;/* After the button is activated, the background color is changed to #888888. */
+    background-color: #888888;/* After the button is activated, the background color is changed to #888888. */
 }
 ```
 
 > **NOTE**
->
-> Pseudo-classes are not supported for the **\<popup>** component and its child components, including **\<popup>**, **\<dialog>**, **\<menu>**, **\<option>**, and **\<picker>**.
+> Pseudo-classes are not supported for the **\<popup>** component and its child components, including, **\<popup>**, **\<dialog>**, **\<menu>**, **\<option>**, and **\<picker>**.
 
 
 ## Precompiled Styles
 
-Precompilation is a program that uses specific syntax to generate CSS files. It provides variables and calculation, helping you define component styles more conveniently. Currently, Less, Sass, and Scss are supported. To use precompiled styles, change the suffix of the original .css file. For example, change **index.css** to **index.less**, **index.sass**, or **index.scss**.
+Precompilation is a program that uses specific syntax to generate CSS files. It provides variables and calculation, helping you define component styles more conveniently. Currently, Less, Sass, and Scss are supported. To use precompiled styles, change the suffix of the original **.css** file. For example, change **index.css** to **index.less**, **index.sass**, or **index.scss**.
 
-- The following index.less file is changed from index.css.
-  
+- The following **index.less** file is changed from **index.css**.
   ```less
   /* index.less */
   /* Define a variable. */
   @colorBackground: #000000;
   .container {
-    background-color: @colorBackground; /* Use the variable defined in the .less file. */
+      background-color: @colorBackground; /* Use the variable defined in the .less file. */
   }
   ```
 
-- Reference a precompiled style file. For example, if the **style.scss** file is located in the common directory, change the original index.css file to **index.scss** and import **style.scss**.
-  
+- Reference a precompiled style file. For example, if the **style.scss** file is located in the **common** directory, change the original **index.css** file to **index.scss** and import **style.scss**.
   ```scss
   /* style.scss */
   /* Define a variable. */
@@ -185,20 +174,18 @@ Precompilation is a program that uses specific syntax to generate CSS files. It
 
   Reference the precompiled style file in **index.scss**:
 
-  
   ```scss
   /* index.scss */
   /* Import style.scss. */
   @import '../../common/style.scss';
   .container {
-    background-color: $colorBackground; /* Use the variable defined in style.scss. */
+      background-color: $colorBackground; /* Use the variable defined in style.scss. */
   }
   ```
 
-  
   > **NOTE**
   >
-  > Place precompiled style files in the common directory.
+  > Place precompiled style files in the **common** directory.
 
 ## CSS Style Inheritance<sup>6+</sup>
 
diff --git a/en/application-dev/ui/ui-js-animate-attribute-style.md b/en/application-dev/ui/ui-js-animate-attribute-style.md
index d950e3f2b5eb25a32f418d69b8c76b691f02aee4..c345843262dd8a4138409e55b0003e32a40f7e1b 100644
--- a/en/application-dev/ui/ui-js-animate-attribute-style.md
+++ b/en/application-dev/ui/ui-js-animate-attribute-style.md
@@ -1,7 +1,7 @@
 # Defining Attribute Style Animations
 
 
-Keyframes is used to scale a component by dynamically setting the width and height of its parent component. Set the scale attribute for child components to scale the child and parent components at the same time. Then, set the opacity attribute to display or hide the child and parent components.
+**Keyframes** is used to scale a component by dynamically setting the width and height of its parent component. Set the scale attribute for child components to scale the child and parent components at the same time. Then, set the opacity attribute to display or hide the child and parent components.
 
 
 ```html
@@ -25,8 +25,10 @@ Keyframes is used to scale a component by dynamically setting the width and heig
   justify-content: center;
   align-items: center;
   flex-direction: column;
+  width: 100%;
+  height: 100%;
 }
-.fade{
+.fade {
   width: 30%;
   height: 200px;
   left: 35%;
@@ -34,13 +36,13 @@ Keyframes is used to scale a component by dynamically setting the width and heig
   position: absolute;
   animation: 2s change infinite friction;
 }
-.bigger{
+.bigger {
   width: 20%;
   height: 100px;
   background-color: blue;
   animation: 2s change1 infinite linear-out-slow-in;
 }
-text{
+text {
   width: 100%;
   height: 100%;
   text-align: center;
@@ -60,7 +62,7 @@ text{
   }
 }
 /* Scaling of the parent component */
-@keyframes change1{
+@keyframes change1 {
   0% {
     width: 20%;
     height: 100px;
@@ -69,11 +71,11 @@ text{
     width: 80%;
     height: 200px;
   }
-}  
+}
 /* Text scaling of the child component */
-@keyframes change2{
-  0%{
-   transform: scale(0);
+@keyframes change2 {
+  0% {
+    transform: scale(0);
   }
   100% {
     transform: scale(1.5);
@@ -82,10 +84,10 @@ text{
 ```
 
 
-![en-us_image_0000001267647889](figures/en-us_image_0000001267647889.gif)
+![en-us_image_0000001217168141](figures/en-us_image_0000001217168141.gif)
 
 
 > **NOTE**
-> 1. The values of animation attributes are not sequenced. However, the values of duration and delay are parsed based on the sequence in which they are displayed.
+> - The values of animation attributes are not sequenced. However, the values of duration and delay are parsed based on the sequence in which they are displayed.
 > 
-> 2. The animation-duration attribute must be set. Otherwise, the duration is 0, which means there is no animation effect. When animation-fill-mode is set to forwards, the component directly displays the style of the last frame.
+> - The animation-duration attribute must be set. Otherwise, the duration is 0, which means there is no animation effect. When animation-fill-mode is set to forwards, the component directly displays the style of the last frame.
diff --git a/en/application-dev/ui/ui-js-animate-component.md b/en/application-dev/ui/ui-js-animate-component.md
index 740ad7a99895513f3674fec2c91d65e924173815..9d51f17b287ef56dfc8cea9b880c129fb0fe7bfc 100644
--- a/en/application-dev/ui/ui-js-animate-component.md
+++ b/en/application-dev/ui/ui-js-animate-component.md
@@ -338,7 +338,7 @@ export default {
 }
 ```
 
-![en-us_image_0000001223127752](figures/en-us_image_0000001223127752.gif)
+![en-us_image_0000001220635011](figures/en-us_image_0000001220635011.gif)
 
 Change the animation status by changing the **playState** attribute.
 
diff --git a/en/application-dev/ui/ui-js-animate-transform.md b/en/application-dev/ui/ui-js-animate-transform.md
index 11d6a11e29eaa920aa7bc3e93aeee7ccb8460f77..202e2ad96201bfd3e2273dd9841000378cd50f85 100644
--- a/en/application-dev/ui/ui-js-animate-transform.md
+++ b/en/application-dev/ui/ui-js-animate-transform.md
@@ -39,8 +39,8 @@ Create a square and rotate it by 90 degrees to form a rhombus. Cover the lower p
   height: 428px;
   background-color: #860303;
   transform: rotate(45deg);
-  margin-top: 230px;
-  margin-left: 266px;
+  margin-top: 284px;
+  margin-left: 148px;
 }
 .content{
   margin-top: 500px;
@@ -53,7 +53,7 @@ Create a square and rotate it by 90 degrees to form a rhombus. Cover the lower p
   width: 100px;
   height: 150px;
   background-color: #1033d9;
-  transform: translate(150px,-150px);
+  transform: translate(150px,-137px);
 }
 .window{
   z-index: 1;
@@ -86,7 +86,7 @@ Create a square and rotate it by 90 degrees to form a rhombus. Cover the lower p
   height: 100px;
   border-radius: 15px;
   background-color: #9a7404;
-  transform: translate(200px,-830px) skewX(-5deg);
+  transform: translate(200px,-710px) skewX(-5deg);
 }
 ```
 
@@ -203,24 +203,26 @@ Set the rotation center around an element in different transform-origin position
   display: flex;
   align-items: center;
   justify-content: center;
+  width: 100%;
+  height: 100%;
 }
-.rect{
+.rect {
   width: 100px;
   height: 100px;
   animation: rotate 3s infinite;
   margin-left: 100px;
 }
-.rect1{
+.rect1 {
   background-color: #f76160;
 }
-.rect2{
+.rect2 {
   background-color: #60f76f;
   /* Change the origin position.*/
   transform-origin: 10% 10px;
 }
-.rect3{
+.rect3 {
   background-color: #6081f7;
-  /* Change the origin position.*/
+  /*  Chhange the origin position.*/
   transform-origin: right bottom;
 }
 @keyframes rotate {
@@ -232,7 +234,7 @@ Set the rotation center around an element in different transform-origin position
   }
 }
 /* 3D sample style */
-.rotate3d{
+.rotate3d {
   margin-top: 150px;
   flex-direction: column;
   background-color:#F1F3F5;
@@ -243,36 +245,36 @@ Set the rotation center around an element in different transform-origin position
   border-radius: 300px;
   border: 1px solid #ec0808;
 }
-.content{
+.content {
   padding-top: 150px;
   display: flex;
   align-items: center;
   justify-content: center;
 }
 /* Use react4 and react5 to shape eyes. */
-.rect4{
+.rect4 {
   width: 100px;
   height: 100px;
-  animation: rotate3d1 17ms infinite;
+  animation: rotate3d1 1000ms infinite;
   background: linear-gradient(#e6c4ec, #be15d9)
 }
-.rect5{
+.rect5 {
   width: 100px;
   height: 100px;
-  animation: rotate3d1 17ms infinite;
+  animation: rotate3d1 1000ms infinite;
   margin-left: 100px;
   background: linear-gradient(#e6c4ec, #be15d9)
 }
-.mouse{
+.mouse {
   margin-top: 150px;
   width: 200px;
   height: 100px;
   border-radius: 50px;
   border: 1px solid #e70303;
-  animation: rotate3d2 17ms infinite;
+  animation: rotate3d2 1000ms infinite;
 }
 /* Eye animation */
-@keyframes rotate3d1{
+@keyframes rotate3d1 {
   0% {
     transform:rotate3d(0,0,0,0deg)
   }
@@ -284,7 +286,7 @@ Set the rotation center around an element in different transform-origin position
   }
 }
 /* Mouth animation */
-@keyframes rotate3d2{
+@keyframes rotate3d2 {
   0% {
     transform:rotate3d(0,0,0,0deg)
   }
@@ -437,6 +439,8 @@ The matrix attribute defines a transformation matrix with six input parameters:
   background-color:#F1F3F5;
   display: flex;
   justify-content: center;
+  width: 100%;
+  height: 100%;
 }
 .rect{
   width: 100px;
@@ -463,7 +467,7 @@ The matrix attribute defines a transformation matrix with six input parameters:
 ![en-us_image_0000001267767853](figures/en-us_image_0000001267767853.gif)
 
 
-## Integrating transform Attributes
+## Integrating Transform Attributes
 
 You can set multiple transform attributes at the same time to apply different transformations to a component. The following example applies the scale, translate, and rotate attributes simultaneously.
 
@@ -481,6 +485,8 @@ You can set multiple transform attributes at the same time to apply different tr
 ```css
 /* xxx.css */
 .container{
+  width: 100%;
+  height: 100%;
   flex-direction:column;
   background-color:#F1F3F5;
   padding:50px;
diff --git a/en/application-dev/ui/ui-js-building-ui-animation.md b/en/application-dev/ui/ui-js-building-ui-animation.md
index 05162d645312dc2f1455e1b4af12e966952c140e..296f9f4fee0dbecea41a50b878d27adb3ec7a4f4 100644
--- a/en/application-dev/ui/ui-js-building-ui-animation.md
+++ b/en/application-dev/ui/ui-js-building-ui-animation.md
@@ -8,11 +8,11 @@ Animations are classified into [Static Animation](#static-animation) and [Contin
 
 The transform attributes are the core of the static animation. A static animation can transform in the following three ways and only once in each way at a time:
 
-- translate: Moves a specified component horizontally or vertically.
+- translate: moves a specified component horizontally or vertically.
 
-- scale: Scales a specified component horizontally or vertically to the required scale.
+- scale: scales a specified component horizontally or vertically to the required scale.
 
-- rotate: Rotates a specified component by a specified angle along the horizontal axis, vertical axis, or center point.
+- rotate: rotates a specified component by a specified angle along the horizontal axis, vertical axis, or center point.
 
 For more information, see [Component Methods](../reference/arkui-js/js-components-common-methods.md). The following is an example:
 
@@ -28,12 +28,14 @@ For more information, see [Component Methods](../reference/arkui-js/js-component
 ```css
 /* xxx.css */
 .container {
+  width: 100%;
   flex-direction: column;
   align-items: center;
 }
 .translate {
   height: 150px;
   width: 300px;
+  margin: 50px;
   font-size: 50px;
   background-color: #008000;
   transform: translate(200px);
@@ -41,14 +43,16 @@ For more information, see [Component Methods](../reference/arkui-js/js-component
 .rotate {
   height: 150px;
   width: 300px;
+  margin: 50px;
   font-size: 50px;
   background-color: #008000;
   transform-origin: 200px 100px;
-  transform: rotateX(45deg);
+  transform: rotate(45deg);
 }
 .scale {
   height: 150px;
   width: 300px;
+  margin: 50px;
   font-size: 50px;
   background-color: #008000;
   transform: scaleX(1.5);
@@ -57,7 +61,7 @@ For more information, see [Component Methods](../reference/arkui-js/js-component
 
 **Figure 1** Static animation
 
-![en-us_image_0000001223127724](figures/en-us_image_0000001223127724.png)
+![en-us_image_0000001071134933](figures/en-us_image_0000001071134933.png)
 
 
 ## Continuous Animation
@@ -66,43 +70,39 @@ The static animation has only the start and end states. To set the transition st
 
 The core of a continuous animation is animation attributes, which define the start and end states of the animation and the curve of time and speed. Animation attributes can implement the following effects:
 
-- animation-name: Background color, opacity, width, height, and transformation type applied to the element after the animation is executed
+- **animation-name**: background color, opacity, width, height, and transformation type applied to the element after the animation is executed
 
-- animation-delay and animation-duration: Element delay and duration after the animation is executed
+- **animation-delay** and **animation-duration**: element delay and duration after the animation is executed
 
-- animation-timing-function: Speed curve of an animation, which makes the animation more fluent
+- **animation-timing-function**: speed curve of an animation, which makes the animation more fluent
 
-- animation-iteration-count: Number of animation playback times
+- **animation-iteration-count**: number of animation playback times
 
-- animation-fill-mode: Whether to restore the initial state after the animation is executed
+- **animation-fill-mode**: whether to restore the initial state after the animation is executed
 
-To use the animation attributes, you need to define a @keyframes rule in the .css file, set the animation transition effect in @keyframes, and invoke the effect through a style class in the .hml file. The following is an example for animation-name:
+To use the animation attributes, you need to define a @keyframes rule in the .css file, set the animation transition effect in **@keyframes**, and invoke the effect through a style class in the .hml file. The following is an example for **animation-name**:
 
 ```html
 <!-- xxx.hml -->
 <div class="item-container">
-  <text class="header">animation-name</text>
-  <div class="item {{colorParam}}">
-    <text class="txt">color</text>
-  </div>
-  <div class="item {{opacityParam}}">
-    <text class="txt">opacity</text>
-  </div>
-  <input class="button" type="button" name="" value="show" onclick="showAnimation"/>
+    <div class="item {{colorParam}}">
+        <text class="txt">color</text>
+    </div>
+    <div class="item {{opacityParam}}">
+        <text class="txt">opacity</text>
+    </div>
+    <input class="button" type="button" name="" value="show" onclick="showAnimation"/>
 </div>
 ```
 
 ```css
 /* xxx.css */
 .item-container {
-  margin-right: 60px;
-  margin-left: 60px;
+  margin: 60px;
   flex-direction: column;
 }
-.header {
-  margin-bottom: 20px;
-}
 .item {
+  width: 80%;
   background-color: #f76160;
 }
 .txt {
@@ -112,6 +112,7 @@ To use the animation attributes, you need to define a @keyframes rule in the .cs
 }
 .button {
   width: 200px;
+  margin: 10px;
   font-size: 30px;
   background-color: #09ba07;
 }
@@ -141,7 +142,7 @@ To use the animation attributes, you need to define a @keyframes rule in the .cs
 }
 ```
 
-```
+```js
 // xxx.js
 export default {
   data: {
@@ -153,10 +154,10 @@ export default {
     this.opacityParam = '';
     this.colorParam = 'color';
     this.opacityParam = 'opacity';
-  },
+  }
 }
 ```
 
 **Figure 2** Continuous animation effect
 
-![en-us_image_0000001223287696](figures/en-us_image_0000001223287696.gif)
+![en-us_image_0000001063148757](figures/en-us_image_0000001063148757.gif)
diff --git a/en/application-dev/ui/ui-js-building-ui-event.md b/en/application-dev/ui/ui-js-building-ui-event.md
index 8ab6becdd9af00f34e2d4429d380d6b4decab92e..fd188d02e9bc4aa81d6c639362ae07dd1cbc46d9 100644
--- a/en/application-dev/ui/ui-js-building-ui-event.md
+++ b/en/application-dev/ui/ui-js-building-ui-event.md
@@ -49,16 +49,18 @@ The following is an example:
 ```css
 /* xxx.css */
 .container {
+  width: 100%;
+  height: 100%;
   flex-direction: column;
   justify-content: center;
   align-items: center;
 }
 .text-container {
-  margin-top: 10px;
+  margin-top: 30px;
   flex-direction: column;
-  width: 750px;
-  height: 50px;
-  background-color: #09ba07;
+  width: 600px;
+  height: 70px;
+  background-color: #0000FF;
 }
 .text-style {
   width: 100%;
@@ -100,3 +102,5 @@ export default {
   },
 }
 ```
+
+![en-us_image_00000011](figures/en-us_image_00000011.gif)
\ No newline at end of file
diff --git a/en/application-dev/ui/ui-js-components-canvas.md b/en/application-dev/ui/ui-js-components-canvas.md
index 9442d5d0fada4ac969e060264238df2b4cb4c65e..9f92788d41e3d1d62fb1eb3dd9df413ef2a9944c 100644
--- a/en/application-dev/ui/ui-js-components-canvas.md
+++ b/en/application-dev/ui/ui-js-components-canvas.md
@@ -115,12 +115,10 @@ Add the long press event to the **&lt;canvas&gt;** component. When the event is
 
 ```js
 // xxx.js
-import prompt from '@system.prompt';
+import promptAction from '@ohos.promptAction';
 export default {
   data:{
     dataURL:null,
-    antialia: false,
-    porc:'open',
   },
   onShow(){
     let el = this.$refs.canvas1;
@@ -131,7 +129,7 @@ export default {
     let el = this.$refs.canvas1
     let dataUrl = el.toDataURL()
     this.dataURL = dataUrl;
-    prompt.showToast({duration:2000,message:"long press,get dataURL"})
+    promptAction.showToast({duration:2000,message:"long press,get dataURL"})
   }
 }
 ```
diff --git a/en/application-dev/ui/ui-js-components-marquee.md b/en/application-dev/ui/ui-js-components-marquee.md
index 4f6ded26a943e9d3b4301b01a8432e4224342323..844caa67cb1066cc7f5bb7f8f2ca61a766d8c0ee 100644
--- a/en/application-dev/ui/ui-js-components-marquee.md
+++ b/en/application-dev/ui/ui-js-components-marquee.md
@@ -79,7 +79,7 @@ Set the **scrollamount**, **loop**, and **direction** attributes to define the m
 <div class="tutorial-page">
   <div class="mymarquee">
     <marquee loop="{{loopval}}" scrollamount="{{scroll}}" direction="{{isleft}}" class="marqueetext" id="testmarquee" onclick="makestart">
-      It's a racing lamp
+      Life is a journey, not the destination.
     </marquee>
   </div>
   <div style="width: 600px;height: 150px;flex-direction: row;justify-content: space-around;">
@@ -128,7 +128,9 @@ button{
 // xxx.js
 export default {
   private: {
-    loopval: -1,    scroll: 10,    isleft: "left",
+    loopval: -1,
+    scroll: 10,    
+    isleft: "left",
   },
   onInit(){
   },
@@ -148,7 +150,7 @@ export default {
 >
 > When the value of **loop** is less than or equal to 0, the marquee scrolls continuously. If **loop** is not set, the default value **-1** is used.
 
-![en-us_image_0000001276162773](figures/en-us_image_0000001276162773.gif)
+![en-us_image_0000001227701867](figures/en-us_image_0000001227701867.gif)
 
 
 ## Example Scenario
@@ -164,7 +166,7 @@ Set **loop** to **1**. When scrolling ends, trigger a **finish** event to increa
   <div class="mymarquee">
     <marquee  style="color: {{color1}}" loop="{{loopval}}" scrollamount="{{scroll}}" direction="{{isleft}}" class="marqueetext" 
     id="testmarquee" onfinish="setfinish">
-      It's a racing lamp
+      Life is a journey, not the destination.
     </marquee>
   </div>
   <div style="width: 600px;height: 150px;flex-direction: row;justify-content: space-around;">
@@ -233,4 +235,4 @@ export default {
 }
 ```
 
-![en-us_image_0000001276003541](figures/en-us_image_0000001276003541.gif)
+![en-us_image_0000001176075554](figures/en-us_image_0000001176075554.gif)
diff --git a/en/application-dev/ui/ui-js-components-search.md b/en/application-dev/ui/ui-js-components-search.md
index 9426b2431c21b3b86822f47e7a8ecbf3a3328ed6..126a08496409cdabb4699c86fddc2680e6504247 100644
--- a/en/application-dev/ui/ui-js-components-search.md
+++ b/en/application-dev/ui/ui-js-components-search.md
@@ -62,7 +62,7 @@ Set the **hint**, **icon**, and **searchbutton** to define the hint text, icon,
 
 ## Adding Styles
 
-Set **color**, **placeholder**, and **caret-color** to set the text color, hint text color, and cursor color of the search box.
+Set **color**, **placeholder-color**, and **caret-color** to set the text color, hint text color, and cursor color of the search box.
 
 
 ```html
@@ -84,7 +84,9 @@ Set **color**, **placeholder**, and **caret-color** to set the text color, hint
   background-color: #F1F3F5;
 }
 search{
-  color: black;  placeholder-color: black;  caret-color: red;
+  color: black;
+  placeholder-color: black;
+  caret-color: red;
 }
 ```
 
@@ -130,34 +132,34 @@ text{
 
 ```js
 // index.js
-import prompt from '@system.prompt'
+import promptAction from '@ohos.promptAction'
 export default {
   search(e){
-    prompt.showToast({
+    promptAction.showToast({
       message:  e.value,
       duration: 3000,
     });
   },
   translate(e){
-    prompt.showToast({
+    promptAction.showToast({
       message:  e.value,
       duration: 3000,
     });
   },
   share(e){
-    prompt.showToast({
+    promptAction.showToast({
       message:  e.value,
       duration: 3000,
     });
   },
   change(e){
-    prompt.showToast({
+    promptAction.showToast({
       message:  e.value,
       duration: 3000,
     });
   },
   submit(e){
-    prompt.showToast({
+    promptAction.showToast({
       message: 'submit',
       duration: 3000,
     });
@@ -216,7 +218,7 @@ In this example, you can select the **&lt;search&gt;**, **&lt;textarea&gt;**, or
 
 ```js
 // index.js
-import prompt from '@system.prompt';
+import promptAction from '@ohos.promptAction';
 export default {
   data: {
     showsearch: true,
@@ -241,13 +243,13 @@ export default {
     }
   },
   submit(e) {
-    prompt.showToast({
+    promptAction.showToast({
       message: 'Search!',
       duration: 2000
     })
   },
   change(e) {
-    prompt.showToast({
+    promptAction.showToast({
       message: 'Content:'+ e.text,
       duration: 2000
     })
diff --git a/en/application-dev/ui/ui-ts-building-category-grid-layout.md b/en/application-dev/ui/ui-ts-building-category-grid-layout.md
index 90caf412465244c4096fd9c04657ad33ad71963d..e7362d233024d9a09bc529ac4a407b789b07ff34 100644
--- a/en/application-dev/ui/ui-ts-building-category-grid-layout.md
+++ b/en/application-dev/ui/ui-ts-building-category-grid-layout.md
@@ -1,17 +1,16 @@
 # Building a Food Category Grid Layout
 
-
 The diet application allows food on the home page to display in list or grid mode. You can implement switching between food categories through tabs in grid mode.
 
 
 1. Import the **Category** enumeration type to the **FoodCategoryList** page.
-   
+
    ```ts
    import { Category, FoodData } from '../model/FoodData'
    ```
 
 2. Create the **FoodCategoryList** and **FoodCategory** components. The **FoodCategoryList** component is used as the entry component of the new page, and the **initializeOnStartup** method is invoked in the entry component.
-   
+
    ```ts
    @Component
    struct FoodList {
@@ -39,8 +38,8 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-3. Create the **showList** member variable in the **FoodCategoryList** component to control the rendering switchover between the list layout and grid layout. The conditional rendering statement if...else... is required.
-   
+3. Create the **showList** member variable in the **FoodCategoryList** component to control the rendering switchover between the list layout and grid layout. The conditional rendering statement **if...else...** is required.
+
    ```ts
    @Entry
    @Component
@@ -60,8 +59,8 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-4. In the upper right corner of the page, create an icon for switching between the list and grid layouts. Set the stack alignment mode to **TopEnd**, top-bottom alignment. Create an image component, and set the click event, that is, negation of showList.
-   
+4. In the upper right corner of the page, create an icon for switching between the list and grid layouts. Set the stack alignment mode to **TopEnd**, top-bottom alignment. Create an image component, and set the click event, that is, negation of **showList**.
+
    ```ts
    @Entry
    @Component
@@ -88,8 +87,8 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-5. Add the @State decorator. After you click the switch tab in the upper right corner, the page does not change. This is because the showList does not have state data and its change does not trigger the page refresh. You need to add the @State decorator to make it state data. The change of the @State decorator will cause re-rendering of the component where the decorator is located.
-   
+5. Add the **@State** decorator. After you click the switch tab in the upper right corner, the page does not change. This is because the **showList** does not have state data and its change does not trigger the page refresh. You need to add the **@State** decorator to make it state data. The change of the **@State** decorator will cause re-rendering of the component where the decorator is located.
+
    ```ts
    @Entry
    @Component
@@ -117,12 +116,12 @@ The diet application allows food on the home page to display in list or grid mod
    
    ```
 
-   When you click the switch icon, the FoodList component is displayed. When you click the switch icon again, the FoodList component is hidden.
+   When you click the switch icon, the **FoodList** component is displayed. When you click the switch icon again, the **FoodList** component is hidden.
 
    ![en-us_image_0000001170411978](figures/en-us_image_0000001170411978.gif)
 
-6. Create a tab to display all food categories (**All**). Create the **\<Tabs>** component and its child component **TabContent** in the **FoodCategory** component, and set **tabBar** to **All**. Set the width of the **TabBars** to **280** and the layout mode to **Scrollable**. This means that the TabBars can be scrolled when the total length exceeds 280. The **\<Tabs>** component is a container component that allows users to switch between content views through tabs. Each tab page corresponds to a TabContent.
-   
+6. Create a tab to display all food categories (**All**). Create the **\<Tabs>** component and its child component **TabContent** in the **FoodCategory** component, and set **tabBar** to **All**. Set the width of the **TabBars** to 280 and the layout mode to **Scrollable**. This means that the **TabBars** can be scrolled when the total length exceeds 280. The **\<Tabs>** component is a container component that allows users to switch between content views through tabs. Each tab page corresponds to a **TabContent**.
+
    ```ts
    @Component
    struct FoodCategory {
@@ -139,10 +138,10 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-   ![en-us_image_0000001267647881](figures/en-us_image_0000001267647881.png)
+   ![en-us_image_0000001204538065](figures/en-us_image_0000001204538065.png)
+
+7. Create the **FoodGrid** component to function as a child component of the **TabContent** component.
 
-7. Create the FoodGrid component to function as a child component of the TabContent component.
-   
    ```ts
    @Component
    struct FoodGrid {
@@ -167,8 +166,8 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-8. Implement a 2 x 6 grid layout (12 food data resources in total). Create a Grid component, and set **columnsTemplate** to **('1fr 1fr')**, **rowsTemplate** to **('1fr 1fr 1fr 1fr 1fr 1fr')**, and both **rowsGap** and **columnsGap** to **8**. Create a Scroll component so that it can be slid.
-   
+8. Implement a 2 x 6 grid layout (12 food data resources in total). Create a **Grid** component, and set **columnsTemplate** to **('1fr 1fr')**, **rowsTemplate** to **('1fr 1fr 1fr 1fr 1fr 1fr')**, and both **rowsGap** and **columnsGap** to **8**. Create a **Scroll** component so that it can be slid.
+
    ```ts
    @Component
    struct FoodGrid {
@@ -191,8 +190,8 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-9. Create a **FoodGridItem** component to display the food image, name, and calories and implement the UI layout. The **FoodGridItem** component is a child component of the **GridItem** component. The height of each FoodGridItem is 184, and the line spacing is 8. The total height of the **\<Grid>** component is calculated as follows: (184 + 8) x 6 – 8 = 1144.
-   
+9. Create a **FoodGridItem** component to display the food image, name, and calories and implement the UI layout. The **FoodGridItem** component is a child component of the **GridItem** component. The height of each **FoodGridItem** is **184**, and the line spacing is **8**. The total height of the **Grid** component is calculated as follows: (184 + 8) x 6 – 8 = 1144.
+
    ```ts
    @Component
    struct FoodGridItem {
@@ -247,10 +246,10 @@ The diet application allows food on the home page to display in list or grid mod
    }
    ```
 
-   ![en-us_image_0000001223287708](figures/en-us_image_0000001223287708.gif)
+   ![en-us_image_0000001170167520](figures/en-us_image_0000001170167520.png)
+
+10. Create the **Category.Vegetable**, **Category.Fruit**, **Category.Nut**, **Category.SeaFood**, and **Category.Dessert** tabs.
 
-10. Create the Category.Vegetable, Category.Fruit, Category.Nut, Category.SeaFood, and Category.Dessert tabs.
-    
     ```ts
     @Component
     struct FoodCategory {
@@ -290,7 +289,7 @@ The diet application allows food on the home page to display in list or grid mod
     }
     ```
 
-11. Set the number of rows and height of grids for different food categories. Because the number of foods varies according to the category, the **'1fr 1fr 1fr 1fr 1fr 1fr'** constant cannot be used to set the number of rows to 6.
+11. Set the number of rows and height of grids for different food categories. Because the number of foods varies according to the category, the **''1fr 1fr 1fr 1fr 1fr 1fr '** constant cannot be used to set the number of rows to 6.
       Create member variables **gridRowTemplate** and **HeightValue**, and set the number of grid rows and height by using these member variables.
 
     ```ts
@@ -320,9 +319,9 @@ The diet application allows food on the home page to display in list or grid mod
       }
     }
     ```
-    
+
     Invoke the **aboutToAppear** API to calculate the number of rows (**gridRowTemplate**) and height (**heightValue**).
-    
+
        ```ts
     aboutToAppear() {
       var rows = Math.round(this.foodItems.length / 2);
@@ -330,11 +329,11 @@ The diet application allows food on the home page to display in list or grid mod
       this.heightValue = rows * 192 - 8;
     }
        ```
-    
-    The custom component provides two lifecycle callbacks: **aboutToAppear** and **aboutToDisappear**. **aboutToAppear** is executed after the custom component is created and before the build method of the custom component is executed. **aboutToDisappear** is executed when the custom component is deinitialized.
-    
-    ![en-us_image_0000001267647885](figures/en-us_image_0000001267647885.png)
-    
+
+    The custom component provides two lifecycle callbacks: **aboutToAppear** and **aboutToDisappear**. **aboutToAppear** is executed after the custom component is created and before the **build** method of the custom component is executed. **aboutToDisappear** is executed before the custom component is destroyed.
+
+    ![en-us_image_0000001215113569](figures/en-us_image_0000001215113569.png)
+
        ```ts
     @Component
     struct FoodGrid {
@@ -368,5 +367,5 @@ The diet application allows food on the home page to display in list or grid mod
       }
     }
        ```
-    
-    ![en-us_image_0000001267887869](figures/en-us_image_0000001267887869.gif)
\ No newline at end of file
+
+       ![en-us_image_0000001170008198](figures/en-us_image_0000001170008198.gif)
diff --git a/en/application-dev/ui/ui-ts-building-category-list-layout.md b/en/application-dev/ui/ui-ts-building-category-list-layout.md
index b8cdf9dcc2d4b0dcfa381c8dbb8e891359d9f974..951dbba7fab52cc3b59bbfb8b472a4b0f7c2b5ce 100644
--- a/en/application-dev/ui/ui-ts-building-category-list-layout.md
+++ b/en/application-dev/ui/ui-ts-building-category-list-layout.md
@@ -4,7 +4,7 @@ Use the **\<List>** component and **ForEach** loop to build the food category li
 
 
 1. Create a page file named **FoodCategoryList.ets** in the **pages** directory and rename the **index.ets** file **FoodDetail.ets**.
-  
+   
 2. Create a **\<List>** component named **FoodList** as the page entry point. Then, add a **\<ListItem>** component named **FoodListItem** as its child component. The **\<List>** component is used to display data of the same type. Its child component **\<ListItem>** is used to display specific items in the list.
    ```ts
    @Component
@@ -28,7 +28,7 @@ Use the **\<List>** component and **ForEach** loop to build the food category li
 3. Import the **FoodData** class and **initializeOnStartup** method.
 
 There are two file access methods in application code:
-- Use a relative path to reference the code file: Use **"../"** for referencing the upper-level directory and **"./"** (which can also be omitted) for referencing the current directory.
+- Use a relative path to reference the code file: Use **"../"** for referencing the parent directory and **"./"** (which can also be omitted) for referencing the current directory.
 - Use the absolute path, which is the root path of the current module, to reference the code file, for example, **common/utils/utils**.
 In this example, a relative path is used for access.
 
diff --git a/en/device-dev/guide/device-camera-control-example.md b/en/device-dev/guide/device-camera-control-example.md
index dbe3e5744342b584ae913d8bca561323a67c1dd4..6507f3def826e2d8c105e52ccb5176eedbecad8d 100644
--- a/en/device-dev/guide/device-camera-control-example.md
+++ b/en/device-dev/guide/device-camera-control-example.md
@@ -1,64 +1,64 @@
 # Use Case<a name="EN-US_TOPIC_0000001055301733"></a>
 
-This use case takes  **camera\_sample**  \(contained in the source code\) as an example for photographing, recording, and previewing on the development board.
+This use case takes **camera\_sample** \(contained in the source code\) as an example for photographing, recording, and previewing on the development board.
 
--   You can obtain source code of the sample from  **applications/sample/camera/media/camera\_sample.cpp**.
--   Before running the sample camera, you need to compile, burn, and run the image. For details, see  [Hi3516 Development Board](../quick-start/quickstart-lite-introduction-hi3516#section26131214194212).
+-   You can obtain source code of the sample from **applications/sample/camera/media/camera\_sample.cpp**.
+-   Before running the sample camera, you need to compile, burn, and run the image. For details, see  [Quick Start Overview](../quick-start/quickstart-overview.md).
 
     >![](../public_sys-resources/icon-note.gif) **NOTE**<br/>
-    >After the development board is started, the home screen is loaded and displayed above the media layer by default. To prevent covering  **camera\_sample**, you should remove the home screen during compilation or packaging.
-    >How to Remove: In  **build/lite/components/applications.json**, comment out or delete the  **//applications/sample/camera/launcher:launcher\_hap**  line from the  **target**  field of  **camera\_sample\_app**.
+    >After the development board is started, the home screen is loaded and displayed above the media layer by default. To prevent covering **camera\_sample**, you should remove the home screen during compilation or packaging.
+    >How to Remove: In **build/lite/components/applications.json**, comment out or delete the **//applications/sample/camera/launcher:launcher\_hap** line from the **target** field of **camera\_sample\_app**.
 
--   The compilation result of the sample code is stored in  **out/hi3516dv300/ipcamera\_hi3516dv300\_liteos/dev\_tools/bin**. To ensure that the code can be executed on the development board, you can copy the file to a TF card through a card reader, or modify the compilation script of  **camera\_sample**  to copy the compilation result to  **rootfs.img**.
+-   The compilation result of the sample code is stored in **out/hi3516dv300/ipcamera\_hi3516dv300\_liteos/dev\_tools/bin**. To ensure that the code can be executed on the development board, you can copy the file to a TF card through a card reader, or modify the compilation script of **camera\_sample** to copy the compilation result to **rootfs.img**.
 
-    Modify the first  **output\_dir**  in the source code path  **applications/sample/camera/media/BUILD.gn**.
+    Modify the first **output\_dir** in the source code path **applications/sample/camera/media/BUILD.gn**.
 
-    -   Before:  **output\_dir = "$root\_out\_dir/dev\_ools"**
-    -   After:  **output\_dir = "$root\_out\_dir/"**
+    -   Before: **output\_dir = "$root\_out\_dir/dev\_ools"**
+    -   After: **output\_dir = "$root\_out\_dir/"**
 
-    Recompile the source code repository and burn the code into the development board. Then you can find the  **camera\_sample**  file in the  **bin**  directory of the board.
+    Recompile the source code repository and burn the code into the development board. Then you can find the **camera\_sample** file in the **bin** directory of the board.
 
     >![](../public_sys-resources/icon-notice.gif) **NOTICE**<br/>
-    >You should insert a TF card \(up to 128 GB supported\) for photographing and video recording before system startup. This way, the TF card will be automatically mounted to the  **/sdcard**  directory. If you insert the TF card after the system is started, you have to manually mount the TF card.
+    >You should insert a TF card \(up to 128 GB supported\) for photographing and video recording before system startup. This way, the TF card will be automatically mounted to the **/sdcard** directory. If you insert the TF card after the system is started, you have to manually mount the TF card.
     >To view the photos and videos in the TF card, copy them to a computer. If you just want to preview photos and videos, you do not need to insert a TF card.
 
 -   Perform the following steps to run the sample:
 
-1.  Run the  **cd**  command to go to the end path of the executable program and start  **camera\_sample**  by running the command in the following figure.
+1.  Run the **cd** command to go to the end path of the executable program and start **camera\_sample** by running the command in the following figure.
 
-    **Figure 1**  Starting camera\_sample<a name="fig380985885020"></a>  
+    **Figure 1** Starting camera\_sample<a name="fig380985885020"></a>  
     ![](figures/starting-camera_sample.png "starting-camera_sample")
 
-    The control commands are displayed as shown in the preceding figure. Press  **S**  to stop the current operation \(including video recording and preview\), and press  **Q**  to exit the program.
+    The control commands are displayed as shown in the preceding figure. Press **S** to stop the current operation \(including video recording and preview\), and press **Q** to exit the program.
 
-2.  Press  **1**  to take a photo in JPG format. The photo is saved in the  **/sdcard**  directory and named  **Capture\***.
+2.  Press **1** to take a photo in JPG format. The photo is saved in the **/sdcard** directory and named **Capture\***.
 
-    **Figure 2**  Serial port logs displayed after the photographing command is executed<a name="fig17819185018384"></a>  
+    **Figure 2** Serial port logs displayed after the photographing command is executed<a name="fig17819185018384"></a>  
     ![](figures/serial-port-logs-displayed-after-the-photographing-command-is-executed.png "serial-port-logs-displayed-after-the-photographing-command-is-executed")
 
     To view the saved file, exit the program and enter the file system. To start the program again, return to the previous step.
 
-    **Figure  3**  Saved files<a name="fig166391743154619"></a>  
+    **Figure  3** Saved files<a name="fig166391743154619"></a>  
     ![](figures/saved-files.png "saved-files")
 
-3.  Press  **2**  to start recording. The video file is in MP4 format and saved in the  **/sdcard**  directory with the name **Record\***. Press  **S**  to stop recording.
+3.  Press **2** to start recording. The video file is in MP4 format and saved in the **/sdcard** directory with the name **Record\***. Press **S** to stop recording.
 
-    **Figure 4**  Serial port logs displayed after the recording command is executed<a name="fig6340814174317"></a>  
+    **Figure 4** Serial port logs displayed after the recording command is executed<a name="fig6340814174317"></a>  
     ![](figures/serial-port-logs-displayed-after-the-recording-command-is-executed.png "serial-port-logs-displayed-after-the-recording-command-is-executed")
 
-4.  Press  **3**  to start preview. The preview is displayed on the screen. Press  **S**  to stop preview.
+4.  Press **3** to start preview. The preview is displayed on the screen. Press **S** to stop preview.
 
-    **Figure 5**  Serial port logs displayed after the preview command is executed<a name="fig9658148124414"></a>  
+    **Figure 5** Serial port logs displayed after the preview command is executed<a name="fig9658148124414"></a>  
     ![](figures/serial-port-logs-displayed-after-the-preview-command-is-executed.png "serial-port-logs-displayed-after-the-preview-command-is-executed")
 
     The following figure shows the preview.
 
-    **Figure 6**  Preview effect<a name="fig24541759597"></a>  
+    **Figure 6** Preview effect<a name="fig24541759597"></a>  
     ![](figures/preview-effect.jpg "preview-effect")
 
-5.  Press  **Q**  to exit.
+5.  Press **Q** to exit.
 
-    **Figure 7**  Serial port logs displayed after the exit command is executed<a name="fig1755682174514"></a>  
+    **Figure 7** Serial port logs displayed after the exit command is executed<a name="fig1755682174514"></a>  
     ![](figures/serial-port-logs-displayed-after-the-exit-command-is-executed.png "serial-port-logs-displayed-after-the-exit-command-is-executed")
 
 
diff --git a/en/device-dev/guide/device-camera-visual-run.md b/en/device-dev/guide/device-camera-visual-run.md
index fd583adfc26355621fae774b2f2745827f481abd..2d2d4a3de11bb03e921aab7b01069264ea0aea34 100644
--- a/en/device-dev/guide/device-camera-visual-run.md
+++ b/en/device-dev/guide/device-camera-visual-run.md
@@ -1,8 +1,8 @@
 # Running on the Device<a name="EN-US_TOPIC_0000001054809161"></a>
 
-Before you install the application and run it on the development board, install the DevEco Device Tool by following operations provided in  [HUAWEI DevEco Device Tool User Guide](https://device.harmonyos.com/en/docs/ide/user-guides/service_introduction-0000001050166905). Burn OpenHarmony into the development board, and run it on the board. For details about how to compile, burn, and run an image, see the  [Hi3516 Development Board](../quick-start/Readme-EN.md). After the image is running normally and the system is started properly, perform the following steps to install or uninstall the application:
+Before you install the application and run it on the development board, install the DevEco Device Tool by following operations provided in [HUAWEI DevEco Device Tool User Guide](https://device.harmonyos.com/en/docs/ide/user-guides/service_introduction-0000001050166905). Burn OpenHarmony into the development board, and run it on the board. For details about how to compile, burn, and run an image, see the [Quick Start Overview](../quick-start/quickstart-overview.md). After the image is running normally and the system is started properly, perform the following steps to install or uninstall the application:
 
-1.  Store the compiled unsigned application installation package and installation tool in an SD card and insert the SD card into the development board slot. The installation tool is in  **dev\_tools**  of the directory where the image file is generated.
+1.  Store the compiled unsigned application installation package and installation tool in an SD card and insert the SD card into the development board slot. The installation tool is in **dev\_tools** of the directory where the image file is generated.
 2.  Run the following command to disable signature verification, which is enabled by default for application installation:
 
     ```
@@ -15,11 +15,11 @@ Before you install the application and run it on the development board, install
     ./sdcard/dev_tools/bin/bm install -p /sdcard/airquality.hap 
     ```
 
-    The  **dev\_tools**  directory stores the installation tool, and  **airquality.hap**  is the application installation package. Replace it with actual the package name.
+    The **dev\_tools** directory stores the installation tool, and **airquality.hap** is the application installation package. Replace it with actual the package name.
 
 4.  After the application is installed, touch the application icon on the home screen to enter the application.
 
-    **Figure  1**  Home screen<a name="fig146361926155516"></a>  
+    **Figure 1** Home screen<a name="fig146361926155516"></a>  
     ![](figures/home-screen.png "home-screen")
 
 5.  \(Optional\) Uninstall the application.
diff --git a/en/device-dev/guide/device-outerdriver-demo.md b/en/device-dev/guide/device-outerdriver-demo.md
index 91e73e4b290f3a60fedd74a73480bff28f3f399c..5ff943c22f1a91a94fea476159087766e72c4d59 100644
--- a/en/device-dev/guide/device-outerdriver-demo.md
+++ b/en/device-dev/guide/device-outerdriver-demo.md
@@ -26,7 +26,7 @@ For details about the input driver model, see  [Touchscreen Overview](../driver/
 
 Follow the instructions in [Quick Start Overview](../quick-start/quickstart-overview.md).
 
->![](../public_sys-resources/icon-notice.gif) **NOTICE:** 
+>![](../public_sys-resources/icon-notice.gif) **NOTICE** 
 >This development example applies to standard, small, and mini OpenHarmony systems. The following sections use the standard system as an example. You can refer to the specific guide for your system to set up the environment.
 
 ## Developing a Touchscreen Driver<a name="section15233162984520"></a>
@@ -37,9 +37,9 @@ Complete the following tasks to adapt a touchscreen IC based on the input driver
 
 Configure the touchscreen driver description required for registering the driver with the HDF, for example, whether the driver is loaded and what is the loading priority.
 
-You can configure the device driver description in the configuration file at  **./drivers/adapter/khdf/linux/hcs/device\_info/device\_info.hcs**.
+You can configure the device driver description in the configuration file at **./drivers/adapter/khdf/linux/hcs/device\_info/device\_info.hcs**.
 
-The  **device\_info.hcs**  file contains all necessary information for registering drivers in the input driver model with the HDF. You do not need to make any modification for the information unless otherwise required in special scenarios. The private configuration data of each driver uses the  **deviceMatchAttr**  field to match the  **match\_attr**  field in the  **input\_config.hcs**  file.
+The **device\_info.hcs**  file contains all necessary information for registering drivers in the input driver model with the HDF. You do not need to make any modification for the information unless otherwise required in special scenarios. The private configuration data of each driver uses the **deviceMatchAttr**  field to match the **match\_attr**  field in the **input\_config.hcs**  file.
 
 The input-related fields in the configuration file are as follows. For details about these fields, see  [Driver Development](../driver/driver-hdf-development.md).
 
@@ -91,21 +91,21 @@ Pay attention to the following fields in the configuration file:
 
 **preload**: specifies whether to load the driver.
 
-**moduleName**: This value must be the same as the  **moduleName**  value in the driver entry structure.
+**moduleName**: This value must be the same as the **moduleName**  value in the driver entry structure.
 
 **serviceName**: This value is used by the HDF to create a device node name.
 
-**deviceMatchAttr**: This value must be the same as the  **match\_attr**  value in the private configuration data.
+**deviceMatchAttr**: This value must be the same as the **match\_attr**  value in the private configuration data.
 
-After the device descriptions are configured, the HDF matches the configuration with the code registered with the driver entry structure based on the  **moduleName**  field, ensuring that drivers can be loaded properly. If multiple drivers are configured, the  **priority**  field determines the loading sequence of each driver.
+After the device descriptions are configured, the HDF matches the configuration with the code registered with the driver entry structure based on the **moduleName**  field, ensuring that drivers can be loaded properly. If multiple drivers are configured, the **priority**  field determines the loading sequence of each driver.
 
 ### Configuring the Touchscreen<a name="section156331030144617"></a>
 
 The private data includes the power-on and power-off sequence, and the platform hardware information includes the GPIO port that connects the touchscreen to the main board.
 
-You can configure the touchscreen in the configuration file at  **./drivers/adapter/khdf/linux/hcs/input/input\_config.hcs**.
+You can configure the touchscreen in the configuration file at **./drivers/adapter/khdf/linux/hcs/input/input\_config.hcs**.
 
-The  **input\_config.hcs**  file consists of the private configuration data of both the common driver and chip driver. Information of this file is read and parsed by the driver code. The configuration in the file includes the board-level hardware information and private configuration of the touchscreen. You can tailor the configuration during your development.
+The **input\_config.hcs**  file consists of the private configuration data of both the common driver and chip driver. Information of this file is read and parsed by the driver code. The configuration in the file includes the board-level hardware information and private configuration of the touchscreen. You can tailor the configuration during your development.
 
 ```
 root {                                                              
@@ -197,7 +197,7 @@ root {
 }
 ```
 
-In the example,  **touchConfig**  contains the  **touch0**  configuration, which describes the  **boardConfig**  and  **chipConfig**  configuration information. The  **boardConfig**  field provides the board-level hardware information of Hi3516D V300, and the  **chipConfig**  field provides the private configuration data of the touchscreen. To use another touchscreen, you can change the value of the  **chipConfig**  field. You can also configure multiple touchscreens for your product. In this example,  **touch0**  represents the hardware interface and chip configuration of the default touchscreen. If you need to configure a secondary touchscreen, add a  **touch1**  block parallel to  **touch0**.
+In the example, **touchConfig**  contains the **touch0**  configuration, which describes the **boardConfig**  and **chipConfig**  configuration information. The **boardConfig**  field provides the board-level hardware information of Hi3516D V300, and the **chipConfig**  field provides the private configuration data of the touchscreen. To use another touchscreen, you can change the value of the **chipConfig**  field. You can also configure multiple touchscreens for your product. In this example, **touch0**  represents the hardware interface and chip configuration of the default touchscreen. If you need to configure a secondary touchscreen, add a **touch1**  block parallel to **touch0**.
 
 ### Adapting to the Private Drivers of the Touchscreen<a name="section17127331595"></a>
 
@@ -207,7 +207,7 @@ The input driver model consists of three parts of drivers. To develop a brand-ne
 
 1.  Implement differentiated APIs for the touchscreen to adapt to the input chip driver.
 
-    You can obtain the sample code at  **./drivers/framework/model/input/driver/touchscreen/touch\_gt911.c**.
+    You can obtain the sample code at **./drivers/framework/model/input/driver/touchscreen/touch\_gt911.c**.
 
     ```
     static struct TouchChipOps g_gt911ChipOps = {                                  // IC options of the touchscreen
@@ -267,7 +267,7 @@ The input driver model consists of three parts of drivers. To develop a brand-ne
 
 2.  Initialize the input chip driver and register the driver with the HDF.
 
-    You can obtain the sample code at  **./drivers/framework/model/input/driver/touchscreen/touch\_gt911.c**.
+    You can obtain the sample code at **./drivers/framework/model/input/driver/touchscreen/touch\_gt911.c**.
 
     ```
     static int32_t HdfGoodixChipInit(struct HdfDeviceObject *device)
@@ -304,7 +304,7 @@ The input driver model consists of three parts of drivers. To develop a brand-ne
 
 1.  Compile the Makefile.
 
-    Open the file at  **./drivers/adapter/khdf/linux/model/input/Makefile**.
+    Open the file at **./drivers/adapter/khdf/linux/model/input/Makefile**.
 
     Add the following content:
 
@@ -313,7 +313,7 @@ The input driver model consists of three parts of drivers. To develop a brand-ne
                   $(INPUT_ROOT_DIR)/touchscreen/touch_gt911.o
     ```
 
-    **touch\_gt911.o**  is the content added in this example.
+    **touch\_gt911.o** is the content added in this example.
 
 2.  Build source code and burn images. For details, see the related sections in [Quick Start Overview](../quick-start/quickstart-overview.md).
 
diff --git a/en/device-dev/guide/device-wlan-led-control.md b/en/device-dev/guide/device-wlan-led-control.md
index 03613ab7217c9078cd600245ebf008da83926b15..22535b4011ca1b70b84c69ccacb03bfed082f95b 100644
--- a/en/device-dev/guide/device-wlan-led-control.md
+++ b/en/device-dev/guide/device-wlan-led-control.md
@@ -16,7 +16,7 @@ Based on the Hi3861 platform, the OpenHarmony WLAN module provides abundant peri
     #define LED_TEST_GPIO 9
     ```
 
-    >![](../public_sys-resources/icon-note.gif) **NOTE:**
+    >![](../public_sys-resources/icon-note.gif) **NOTE**
     >
     >For details about the schematic diagram of the development board, contact the Hi3861 customer service personnel.
 
diff --git a/zh-cn/application-dev/application-models/ability-startup-with-explicit-want.md b/zh-cn/application-dev/application-models/ability-startup-with-explicit-want.md
index 67dc2e9a44c57cabb5e4cff1ecd69779016890ba..4f470899d8db2a73d34c0b08fb9314bee57deeaf 100644
--- a/zh-cn/application-dev/application-models/ability-startup-with-explicit-want.md
+++ b/zh-cn/application-dev/application-models/ability-startup-with-explicit-want.md
@@ -1,72 +1,4 @@
 # 使用显式Want启动Ability
 
 
-在应用使用场景中，当用户点击某个按钮时，应用经常需要拉起指定UIAbility组件来完成某些特定任务。下面介绍如何通过显式Want拉起应用内一个指定UIAbility组件。
-
-
-## 开发步骤
-
-1. Stage模型工程内，创建一个Ability（此示例内命名为callerAbility）与相应Page（此示例中名为Index.ets），并在callerAbility.ts文件内的onWindowStageCreate函数内通过windowStage.loadContent()方法将两者绑定。
-   
-   ```ts
-   // ...
-       // callerAbility.ts
-       onWindowStageCreate(windowStage) {
-           // Main window is created, set main page for this ability
-           console.info('[Demo] EntryAbility onWindowStageCreate')
-           // Bind callerAbility with a paged named Index
-           windowStage.loadContent('pages/Index')
-       }
-   // ...
-   ```
-
-2. 同上方法再创建一个Ability，此示例内命名为“calleeAbility”。
-
-3. 在callerAbility的“Index.ets”页面内新增一个按钮。
-   
-   ```ts
-   // ...
-     build() {
-       Row() {
-         Column() {
-           Text('hello')
-           .fontSize(50)
-           .fontWeight(FontWeight.Bold)
-           // A new button with will call explicitStartAbility() when clicked.
-           Button("CLICKME")
-           .onClick(this.explicitStartAbility) // explicitStartAbility见下面示例代码
-           // ...
-         }
-         .width('100%')
-       }
-       .height('100%')
-     }
-   // ...
-   ```
-
-4. 补充相对应的onClick方法，并使用**显式Want**在方法内启动calleeAbility。bundleName字段可在工程AppScope&gt;app.json5文件内获取；abilityName可在对应模块内的“yourModuleName &gt; src &gt; main &gt; module.json5”文件查看。
-   
-   ```ts
-   import common from '@ohos.app.ability.common';
-   
-   // ...
-     async explicitStartAbility() {
-       try {
-         // Explicit want with abilityName specified.
-         let want = {
-           deviceId: "",
-           bundleName: "com.example.myapplication",
-           abilityName: "calleeAbility"
-         };
-         let context = getContext(this) as common.UIAbilityContext;
-         await context.startAbility(want);
-         console.info(`explicit start ability succeed`);
-       } catch (error) {
-         console.info(`explicit start ability failed with ${error.code}`);
-       }
-     }
-   // ...
-   ```
-
-5. 至此，当您点击CLICKME按钮时，应看到页面的跳转。
-   <img src="figures/startAbilityWtExplicitWant.PNG" alt="startAbilityWtExplicitWant" style="zoom: 80%;" />
+在应用使用场景中，当用户在应用内点击某个按钮时，经常需要拉起指定UIAbility组件来完成某些特定任务。在启动UIAbility时，指定了abilityName和bundleName参数，可以使用显示Want方式启动UIAbility。显示Want的使用请参见[启动应用内的UIAbility](uiability-intra-device-interaction.md#启动应用内的uiability)。
diff --git a/zh-cn/application-dev/application-models/ability-startup-with-implicit-want.md b/zh-cn/application-dev/application-models/ability-startup-with-implicit-want.md
index 8b120b81e72168a6c01576ea5a9b8e638e9febba..dbf65fc512576ea5b57cee09bacd77f283d1055f 100644
--- a/zh-cn/application-dev/application-models/ability-startup-with-implicit-want.md
+++ b/zh-cn/application-dev/application-models/ability-startup-with-implicit-want.md
@@ -41,7 +41,7 @@
 ## 开发步骤
 
 1. 在自定义函数implicitStartAbility内使用**隐式Want**启动Ability。
-   
+
    ```ts
        async implicitStartAbility() {
            try {
@@ -71,12 +71,12 @@
 
      匹配过程如下：
    1. want内action不为空，且被skills内action包括，匹配成功。
-   
+
    2. want内entities不为空，且被skills内entities包括，匹配成功。
-   
-   3. skills内uris拼接为https://www.test.com:8080/query\* (\*为通配符)包含want内uri，匹配成功。
-   
+
+   3. skills内uris拼接为`https://www.test.com:8080/query*` (\*为通配符)包含want内uri，匹配成功。
+
    4. want内type不为空，且被skills内type包含，匹配成功。
 
-2. 当有多个匹配应用时，会被应用选择器展示给用户进行选择。
-   <img src="figures/stage-want1.png" alt="stage-want1" style="zoom:80%;" />
+2. 当有多个匹配应用时，会被应用选择器展示给用户进行选择。  
+<img src="figures/stage-want1.png" alt="stage-want1" style="zoom:80%;" />
diff --git a/zh-cn/application-dev/application-models/actions-entities.md b/zh-cn/application-dev/application-models/actions-entities.md
index 68cc20700d501e21681748ae9ac02203c13d3656..a03921827b795c847d66cd8d4637b2639cb3b9a0 100644
--- a/zh-cn/application-dev/application-models/actions-entities.md
+++ b/zh-cn/application-dev/application-models/actions-entities.md
@@ -1,6 +1,5 @@
 # 常见action与entities
 
-
 **[action](../reference/apis/js-apis-ability-wantConstant.md#wantconstantaction)**：表示调用方要执行的通用操作（如查看、分享、应用详情）。在隐式Want中，您可定义该字段，配合uri或parameters来表示对数据要执行的操作。如打开，查看该uri数据。例如，当uri为一段网址，action为ohos.want.action.viewData则表示匹配可查看该网址的Ability。在Want内声明action字段表示希望被调用方应用支持声明的操作。在被调用方应用配置文件skills字段内声明actions表示该应用支持声明操作。
 
 
@@ -15,7 +14,6 @@
 
 - ACTION_VIEW_MULTIPLE_DATA：发送多个数据记录的操作。
 
-
 **[entities](../reference/apis/js-apis-ability-wantConstant.md#wantconstantentity)**：表示目标Ability的类别信息（如浏览器、视频播放器），在隐式Want中是对action的补充。在隐式Want中，开发者可定义该字段，来过滤匹配应用的类别，例如必须是浏览器。在Want内声明entities字段表示希望被调用方应用属于声明的类别。在被调用方应用配置文件skills字段内声明entites表示该应用支持的类别。
 
 
diff --git a/zh-cn/application-dev/application-models/data-share-via-want.md b/zh-cn/application-dev/application-models/data-share-via-want.md
index 7ae2b4b8c3aa94cda0fadc6c6f8b2d31339e3133..1c78aafe082370f758d6434ac6c7ee2af796e40f 100644
--- a/zh-cn/application-dev/application-models/data-share-via-want.md
+++ b/zh-cn/application-dev/application-models/data-share-via-want.md
@@ -64,7 +64,7 @@
       - "ability.picker.fileSizes"：应用选择器根据该字段展示文件大小。以字节为单位。
       - "ability.picker.fileNames"与"ability.picker.fileSizes"为数组，其有一一对应关系。
 
-      例如：当"ability.picker.type"为“application/pdf”，"ability.picker.fileNames"为“["接口文档.pdf"]”，"ability.picker.fileSizes"为“[350 \* 1024]”时，应用选择器将以下形式展示。
+      例如：当"ability.picker.type"为“application/pdf”，"ability.picker.fileNames"为“["接口文档.pdf"]”，"ability.picker.fileSizes"为“[350 \* 1024]”时，应用选择器将以下形式展示。  
       <img src="figures/stage-want2.png" alt="stage-want2" style="zoom:50%;" />
       
       示例代码中“ability.want.params.INTENT”字段是一个嵌套Want，内部所含action、type等字段将由应用选择器进行隐式匹配，具体隐式匹配规则可参考[隐式Want匹配原理详解](explicit-implicit-want-mappings.md#隐式want匹配原理详解)。当用户选择具体应用后，“ability.want.params.INTENT”字段的嵌套Want将传递至所选应用。
diff --git a/zh-cn/application-dev/application-models/explicit-implicit-want-mappings.md b/zh-cn/application-dev/application-models/explicit-implicit-want-mappings.md
index 2fcecb63c094190c71db81d3b703c888539a0e66..5cba63d0d4d07151c226feca88fabff0ebc8eb73 100644
--- a/zh-cn/application-dev/application-models/explicit-implicit-want-mappings.md
+++ b/zh-cn/application-dev/application-models/explicit-implicit-want-mappings.md
@@ -49,7 +49,7 @@
 
 ### want参数的action匹配规则
 
-将调用方传入的want参数的action与待匹配Ability的skills配置中的actions进行匹配。
+将调用方传入的want参数的[action](../reference/apis/js-apis-ability-wantConstant.md#wantconstantaction)与待匹配Ability的skills配置中的actions进行匹配。
 
 - 调用方传入的want参数的action不为空，待匹配Ability的skills配置中的actions为空，则action匹配失败。
 
@@ -64,7 +64,7 @@
 
 ### want参数的entities匹配规则
 
-将调用方传入的want参数的entities与待匹配Ability的skills配置中的entities进行匹配。
+将调用方传入的want参数的[entities](../reference/apis/js-apis-ability-wantConstant.md#wantconstantentity)与待匹配Ability的skills配置中的entities进行匹配。
 
 - 调用方传入的want参数的entities为空，待匹配Ability的skills配置中的entities不为空，则entities匹配成功。
 
@@ -84,7 +84,7 @@
 
 调用方传入的want参数中设置uri和type参数发起组件启动请求，系统会遍历当前系统已安装的组件列表，并逐个匹配待匹配Ability的skills配置中的uris数组，如果待匹配Ability的skills配置中的uris数组中只要有一个可以匹配调用方传入的want参数中设置的uri和type即为匹配成功。
 
-  **图3** want参数中uri和type皆不为空时的匹配规则  
+**图3** want参数中uri和type皆不为空时的匹配规则  
 <img src="figures/want-uri-type1.png" alt="want-uri-type1" style="zoom: 80%;" />
 
 实际应用中，uri和type共存在四种情况，下面将讲解四种情况的具体匹配规则：
@@ -110,7 +110,7 @@
 下图为了简化描述，称want中传入的uri为w_uri，称want中传入的type为w_type, 待匹配Ability的skills配置中uris为s_uris，其中每个元素为s_uri；按自上而下顺序匹配。
 
 
-  **图4** want参数中uri和type的具体匹配规则  
+**图4** want参数中uri和type的具体匹配规则  
 <img src="figures/want-uri-type2.png" alt="want-uri-type2" style="zoom:80%;" />
 
 
@@ -133,24 +133,24 @@
 > **说明：**
 > 待匹配Ability的skills配置的uris中scheme、host、port、path、pathStartWith和pathRegex属性拼接，如果依次声明了path、pathStartWith和pathRegex属性时，uris将分别拼接为如下三种表达式：
 > 
-> - **全路径表达式**：scheme://host:port/path
+> - **全路径表达式**：`scheme://host:port/path`
 > 
-> - **前缀表达式**：scheme://host:port/pathStartWith
+> - **前缀表达式**：`scheme://host:port/pathStartWith`
 > 
-> - **正则表达式**：scheme://host:port/pathRegex
+> - **正则表达式**：`scheme://host:port/pathRegex`
 
 
 ### type匹配规则
 
 > **说明：**
-> 此小节所述的type匹配规则的适用性需建立在want参数内type不为空的基础上。当want参数内type为空时请参考[want参数的uri和type匹配规则](#want参数的uri和type匹配规则)。
+> 此小节所述的type匹配规则的适用性需建立在want参数内type不为空的基础上。当want参数内type为空时请参见[want参数的uri和type匹配规则](#want参数的uri和type匹配规则)。
 
 这里为了简化描述，称want中传入的uri为w_type，待匹配Ability的skills数组中uris的type数据为s_type，具体的匹配规则如下：
 
 - 如果s_type为空，则匹配失败。
 
-- 如果s_type或者w_type为通配符"\*/\*"，则匹配成功。
+- 如果s_type或者w_type为通配符`*/*`，则匹配成功。
 
-- 如果s_type最后一个字符为通配符'\*'，如"prefixType/\*"，则当w_type包含"prefixType/"时匹配成功，否则匹配失败。
+- 如果s_type最后一个字符为通配符`*`，如`prefixType/*`，则当w_type包含`prefixType/`时匹配成功，否则匹配失败。
 
-- 如果w_type最后一个字符为通配符'\*'，如"prefixType/\*"，则当s_type包含"prefixType/"时匹配成功，否则匹配失败。
+- 如果w_type最后一个字符为通配符`*`，如`prefixType/*`，则当s_type包含`prefixType/`时匹配成功，否则匹配失败。
diff --git a/zh-cn/application-dev/application-models/uiability-launch-type.md b/zh-cn/application-dev/application-models/uiability-launch-type.md
index 7dca65f44256b10a2dfd463ce3514796d0a82b4e..e07b1567ed1fb763c83b0ae283fdfda1bcae36d1 100644
--- a/zh-cn/application-dev/application-models/uiability-launch-type.md
+++ b/zh-cn/application-dev/application-models/uiability-launch-type.md
@@ -15,15 +15,14 @@ UIAbility的启动模式是指UIAbility实例在启动时的不同呈现状态
 
 singleton启动模式为单实例模式，也是默认情况下的启动模式。
 
-每次调用startAbility()方法时，如果应用进程中该类型的UIAbility实例已经存在，则复用系统中的UIAbility实例。系统中只存在唯一一个该UIAbility实例，即在最近任务列表中只存在一个该类型的UIAbility实例。
+每次调用[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)方法时，如果应用进程中该类型的UIAbility实例已经存在，则复用系统中的UIAbility实例。系统中只存在唯一一个该UIAbility实例，即在最近任务列表中只存在一个该类型的UIAbility实例。
 
 **图1** 单实例模式演示效果  
-<img src="figures/uiability-launch-type1.png" alt="uiability-launch-type1" style="zoom:50%;" />
+<img src="figures/uiability-launch-type1.png" alt="uiability-launch-type1" width="40%;" />
 
-> **说明：**
-> 应用的UIAbility实例已创建，该UIAbility配置为单实例模式，再次调用startAbility()方法启动该UIAbility实例，此时只会进入该UIAbility的[onNewWant()](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonnewwant)回调，不会进入其onCreate()和onWindowStageCreate()生命周期回调。
+> **说明**：应用的UIAbility实例已创建，该UIAbility配置为单实例模式，再次调用[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)方法启动该UIAbility实例。由于启动的还是原来的UIAbility实例，并未重新创建一个新的UIAbility实例，此时只会进入该UIAbility的[onNewWant()](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonnewwant)回调，不会进入其[onCreate()](../reference/apis/js-apis-app-ability-uiAbility.md#uiabilityoncreate)和[onWindowStageCreate()](../reference/apis/js-apis-app-ability-uiAbility.md#uiabilityonwindowstagecreate)生命周期回调。
 
-如果需要使用singleton启动模式，在[module.json5配置文件](../quick-start/module-configuration-file.md)中的"launchType"字段配置为"singleton"即可。
+如果需要使用singleton启动模式，在[module.json5配置文件](../quick-start/module-configuration-file.md)中的`launchType`字段配置为`singleton`即可。
 
 
 ```json
@@ -43,12 +42,12 @@ singleton启动模式为单实例模式，也是默认情况下的启动模式
 
 ## standard启动模式
 
-standard启动模式为标准实例模式，每次调用startAbility()方法时，都会在应用进程中创建一个新的该类型UIAbility实例。即在最近任务列表中可以看到有多个该类型的UIAbility实例。这种情况下可以将UIAbility配置为standard（标准实例模式）。
+standard启动模式为标准实例模式，每次调用[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)方法时，都会在应用进程中创建一个新的该类型UIAbility实例。即在最近任务列表中可以看到有多个该类型的UIAbility实例。这种情况下可以将UIAbility配置为standard（标准实例模式）。
 
-  **图2** 标准实例模式演示效果  
-<img src="figures/standard-mode.png" alt="standard-mode" style="zoom:50%;" />
+**图2** 标准实例模式演示效果  
+<img src="figures/standard-mode.png" alt="standard-mode" width="40%;" />
 
-standard启动模式的开发使用，在[module.json5配置文件](../quick-start/module-configuration-file.md)中的"launchType"字段配置为"standard"即可。
+standard启动模式的开发使用，在[module.json5配置文件](../quick-start/module-configuration-file.md)中的`launchType`字段配置为`standard`即可。
 
 
 ```json
@@ -70,19 +69,12 @@ standard启动模式的开发使用，在[module.json5配置文件](../quick-sta
 
 specified启动模式为指定实例模式，针对一些特殊场景使用（例如文档应用中每次新建文档希望都能新建一个文档实例，重复打开一个已保存的文档希望打开的都是同一个文档实例）。
 
-在UIAbility实例创建之前，允许开发者为该实例创建一个唯一的字符串Key，创建的UIAbility实例绑定Key之后，后续每次调用startAbility()方法时，都会询问应用使用哪个Key对应的UIAbility实例来响应startAbility()请求。运行时由UIAbility内部业务决定是否创建多实例，如果匹配有该UIAbility实例的Key，则直接拉起与之绑定的UIAbility实例，否则创建一个新的UIAbility实例。
-
-  **图3** 指定实例模式演示效果  
+**图3** 指定实例模式演示效果  
 <img src="figures/uiability-launch-type2.png" alt="uiability-launch-type2" style="zoom:50%;" />
 
-> **说明：**
->
-> 1. 应用的UIAbility实例已创建，该UIAbility配置为指定实例模式，再次调用startAbility()方法启动该UIAbility实例，且[AbilityStage](abilitystage.md)的[onAcceptWant()](../reference/apis/js-apis-app-ability-abilityStage.md#abilitystageonacceptwant)回调匹配到一个已创建的UIAbility实例。此时，再次启动该UIAbility时，只会进入该UIAbility的[onNewWant()](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonnewwant)回调，不会进入其onCreate()和onWindowStageCreate()生命周期回调。
-> 2. DevEco Studio默认工程中未自动生成AbilityStage，AbilityStage文件的创建请参见[AbilityStage组件容器](abilitystage.md)。
-
-例如有两个UIAbility：EntryAbility和FuncAbility，FuncAbility配置为specified启动模式，需要从EntryAbility的页面中启动FuncAbility。
+例如有两个UIAbility：EntryAbility和SpecifiedAbility，SpecifiedAbility配置为specified启动模式，需要从EntryAbility的页面中启动SpecifiedAbility。
 
-1. 在FuncAbility中，将[module.json5配置文件](../quick-start/module-configuration-file.md)的"launchType"字段配置为"specified"。
+1. 在SpecifiedAbility中，将[module.json5配置文件](../quick-start/module-configuration-file.md)的`launchType`字段配置为`specified`。
    
    ```json
    {
@@ -98,7 +90,8 @@ specified启动模式为指定实例模式，针对一些特殊场景使用（
    }
    ```
 
-2. 在EntryAbility中，调用startAbility()方法时，在want参数中，增加一个自定义参数来区别UIAbility实例，例如增加一个"instanceKey"自定义参数。
+2. 在UIAbility实例创建之前，允许开发者为该实例创建一个唯一的字符串Key，创建的UIAbility实例绑定Key之后，后续每次调用[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)方法时，都会询问应用使用哪个Key对应的UIAbility实例来响应[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)请求。
+   在EntryAbility中，调用[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)方法时，在want参数中，增加一个自定义参数来区别UIAbility实例，例如增加一个`instanceKey`自定义参数。
    
    ```ts
    // 在启动指定实例模式的UIAbility时，给每一个UIAbility实例配置一个独立的Key标识
@@ -110,7 +103,7 @@ specified启动模式为指定实例模式，针对一些特殊场景使用（
    let want = {
        deviceId: '', // deviceId为空表示本设备
        bundleName: 'com.example.myapplication',
-       abilityName: 'FuncAbility',
+       abilityName: 'SpecifiedAbility',
        moduleName: 'module1', // moduleName非必选
        parameters: { // 自定义信息
            instanceKey: getInstance(),
@@ -123,8 +116,9 @@ specified启动模式为指定实例模式，针对一些特殊场景使用（
        // ...
    })
    ```
-
-3. 由于FuncAbility的启动模式配置为了指定实例启动模式，在FuncAbility启动之前，会先进入其对应的AbilityStage的[onAcceptWant()](../reference/apis/js-apis-app-ability-abilityStage.md#abilitystageonacceptwant)生命周期回调中，解析传入的want参数，获取"instanceKey"自定义参数。根据业务需要通过AbilityStage的[onAcceptWant()](../reference/apis/js-apis-app-ability-abilityStage.md#abilitystageonacceptwant)生命周期回调返回一个字符串Key标识。[如果返回的Key对应一个已启动的UIAbility](mission-management-launch-type.md#fig14520125175314)，则会将之前的UIAbility拉回前台并获焦，而不创建新的实例，否则创建新的实例并启动。
+   
+3. 运行时由UIAbility内部业务决定是否创建多实例，如果匹配有该UIAbility实例的Key，则直接拉起与之绑定的UIAbility实例，否则创建一个新的UIAbility实例。
+   由于SpecifiedAbility的启动模式配置为了指定实例启动模式，在SpecifiedAbility启动之前，会先进入其对应的AbilityStage的[onAcceptWant()](../reference/apis/js-apis-app-ability-abilityStage.md#abilitystageonacceptwant)生命周期回调中，解析传入的want参数，获取`instanceKey`自定义参数。根据业务需要通过AbilityStage的[onAcceptWant()](../reference/apis/js-apis-app-ability-abilityStage.md#abilitystageonacceptwant)生命周期回调返回一个字符串Key标识。[如果返回的Key对应一个已启动的UIAbility](mission-management-launch-type.md#fig14520125175314)，则会将之前的UIAbility拉回前台并获焦，而不创建新的实例，否则创建新的实例并启动。
    
    ```ts
    import AbilityStage from '@ohos.app.ability.AbilityStage';
@@ -132,19 +126,24 @@ specified启动模式为指定实例模式，针对一些特殊场景使用（
    export default class MyAbilityStage extends AbilityStage {
        onAcceptWant(want): string {
            // 在被调用方的AbilityStage中，针对启动模式为specified的UIAbility返回一个UIAbility实例对应的一个Key值
-           // 当前示例指的是module1 Module的FuncAbility
-           if (want.abilityName === 'FuncAbility') {
+           // 当前示例指的是module1 Module的SpecifiedAbility
+           if (want.abilityName === 'SpecifiedAbility') {
                // 返回的字符串Key标识为自定义拼接的字符串内容
-               return `FuncAbilityInstance_${want.parameters.instanceKey}`;
+               return `SpecifiedAbilityInstance_${want.parameters.instanceKey}`;
            }
    
            return '';
        }
    }
    ```
-
+   
+   > **说明：**
+   >
+   > 1. 应用的UIAbility实例已创建，该UIAbility配置为指定实例模式，再次调用[startAbility()](../reference/apis/js-apis-inner-application-uiAbilityContext.md#uiabilitycontextstartability)方法启动该UIAbility实例，且[AbilityStage](../reference/apis/js-apis-app-ability-abilityStage.md)的[onAcceptWant()](../reference/apis/js-apis-app-ability-abilityStage.md#abilitystageonacceptwant)回调匹配到一个已创建的UIAbility实例。由于启动的还是原来的UIAbility实例，并未重新创建一个新的UIAbility实例，此时再次启动该UIAbility时，只会进入该UIAbility的[onNewWant()](../reference/apis/js-apis-app-ability-uiAbility.md#abilityonnewwant)回调，不会进入其[onCreate()](../reference/apis/js-apis-app-ability-uiAbility.md#uiabilityoncreate)和[onWindowStageCreate()](../reference/apis/js-apis-app-ability-uiAbility.md#uiabilityonwindowstagecreate)生命周期回调。
+   > 2. DevEco Studio默认工程中未自动生成AbilityStage，AbilityStage文件的创建请参见[AbilityStage组件容器](abilitystage.md)。
+   
    例如在文档应用中，可以对不同的文档实例内容绑定不同的Key值。当每次新建文档的时候，可以传入不同的新Key值（如可以将文件的路径作为一个Key标识），此时AbilityStage中启动UIAbility时都会创建一个新的UIAbility实例；当新建的文档保存之后，回到桌面，或者新打开一个已保存的文档，回到桌面，此时再次打开该已保存的文档，此时AbilityStage中再次启动该UIAbility时，打开的仍然是之前原来已保存的文档界面。
-
+   
      以如下步骤所示进行举例说明。
    1. 打开文件A，对应启动一个新的UIAbility实例，例如启动“UIAbility实例1”。
    
diff --git a/zh-cn/application-dev/application-models/want-overview.md b/zh-cn/application-dev/application-models/want-overview.md
index b02617e6192c92214808fdb0d7d1c6d9c63db37d..2f4e72601056a6bbdf2beb24898f441bee11dd23 100644
--- a/zh-cn/application-dev/application-models/want-overview.md
+++ b/zh-cn/application-dev/application-models/want-overview.md
@@ -12,7 +12,7 @@
 ## Want的类型
 
 - **显式Want**：在启动Ability时指定了abilityName和bundleName的Want称为显式Want。
-    当有明确处理请求的对象时，通过提供目标Ability所在应用的Bundle名称信息（bundleName），并在Want内指定abilityName便可启动目标Ability。显式Want通常用于在当前应用开发中启动某个已知的Ability。参数说明参见[Want参数说明](want-overview.md#Want参数说明)。
+    当有明确处理请求的对象时，通过提供目标Ability所在应用的Bundle名称信息（bundleName），并在Want内指定abilityName便可启动目标Ability。显式Want通常用于在当前应用开发中启动某个已知的Ability。
     
   ```ts
   let wantInfo = {
@@ -22,7 +22,7 @@
   }
   ```
 
-- **隐式Want**：在启动UIAbility时未指定abilityName的Want称为隐式Want。
+- **隐式Want**：在启动Ability时未指定abilityName的Want称为隐式Want。
   当请求处理的对象不明确时，希望在当前应用中使用其他应用提供的某个能力（通过[skills标签](../quick-start/module-configuration-file.md#skills标签)定义），而不关心提供该能力的具体应用，可以使用隐式Want。例如使用隐式Want描述需要打开一个链接的请求，而不关心通过具体哪个应用打开，系统将匹配声明支持该请求的所有应用。
 
   
@@ -47,18 +47,3 @@
   > - 调用方传入的want参数中不带有abilityName和bundleName，则不允许通过隐式Want启动所有应用的ServiceExtensionAbility。
   > 
   > - 调用方传入的want参数中带有bundleName，则允许使用startServiceExtensionAbility()方法隐式Want启动ServiceExtensionAbility，默认返回优先级最高的ServiceExtensionAbility，如果优先级相同，返回第一个。
-
-## Want参数说明
-
-| 名称 | 读写属性 | 类型 | 必填 | 描述 |
-| -------- | -------- | -------- | -------- | -------- |
-| deviceId | 只读 | string | 否 | 表示目标Ability所在设备ID。如果未设置该字段，则表明本设备。 |
-| bundleName | 只读 | string | 否 | 表示目标Ability所在应用名称。 |
-| moduleName | 只读 | string | 否 | 表示目标Ability所属的模块名称。 |
-| abilityName | 只读 | string | 否 | 表示目标Ability名称。如果未设置该字段，则该Want为隐式。如果在Want中同时指定了bundleName，moduleName和abilityName，则Want可以直接匹配到指定的Ability。 |
-| uri | 只读 | string | 否 | 表示携带的数据，一般配合type使用，指明待处理的数据类型。如果在Want中指定了uri，则Want将匹配指定的Uri信息，包括scheme,&nbsp;schemeSpecificPart,&nbsp;authority和path信息。 |
-| type | 只读 | string | 否 | 表示携带数据类型，使用[MIME类型](https://www.iana.org/assignments/media-types/media-types.xhtml?utm_source=ld246.com%E3%80%82)规范。例如："text/plain"、"image/\*"等。 |
-| [action](../reference/apis/js-apis-ability-wantConstant.md) | 只读 | string | 否 | 表示要执行的通用操作（如：查看、分享、应用详情）。在隐式Want中，您可定义该字段，配合uri或parameters来表示对数据要执行的操作。如打开，查看该uri数据。例如，当uri为一段网址，action为ohos.want.action.viewData则表示匹配可查看该网址的Ability。 |
-| [entities](../reference/apis/js-apis-ability-wantConstant.md) | 只读 | Array&lt;string&gt; | 否 | 表示目标Ability额外的类别信息（如：浏览器，视频播放器），在隐式Want中是对action的补充。在隐式Want中，您可定义该字段，来过滤匹配UIAbility类别，如必须是浏览器。例如，在action字段的举例中，可存在多个应用声明了支持查看网址的操作，其中有应用为普通社交应用，有的为浏览器应用，您可通过entity.system.browsable过滤掉非浏览器的其他应用。 |
-| [flags](../reference/apis/js-apis-ability-wantConstant.md#wantconstantflags) | 只读 | number | 否 | 表示处理Want的方式。例如通过wantConstant.Flags.FLAG_ABILITY_CONTINUATION表示是否以设备间迁移方式启动Ability。 |
-| parameters | 只读 | {[key:&nbsp;string]:&nbsp;any} | 否 | 此参数用于传递自定义数据，通过用户自定义的键值对进行数据填充，具体支持的数据类型如[Want&nbsp;API](../reference/apis/js-apis-app-ability-want.md)所示。 |
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityDelegatorRegistry.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityDelegatorRegistry.md
index 33ee1b0250290a1570f6c0ab1e7fc4deac2c6496..3fb88dfc5eba562d52fa0ed6da2435ef42961d95 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityDelegatorRegistry.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityDelegatorRegistry.md
@@ -46,13 +46,12 @@ getAbilityDelegator(): AbilityDelegator
 ```ts
 import AbilityDelegatorRegistry from '@ohos.app.ability.abilityDelegatorRegistry';
 
-var abilityDelegator;
-abilityDelegator = AbilityDelegatorRegistry.getAbilityDelegator();
+let abilityDelegator = AbilityDelegatorRegistry.getAbilityDelegator();
 
 let want = {
     bundleName: "com.ohos.example",
     abilityName: "MainAbility"
-}
+};
 abilityDelegator.startAbility(want, (err) => {
     if (err.code !== 0) {
         console.log("Success start ability.");
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityLifecycleCallback.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityLifecycleCallback.md
index 24b621cc32d933eb09060f3161ae3acdf59e9ea0..919cbce9d3af5bb0991b425ea5bc1daff90b1e7d 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityLifecycleCallback.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityLifecycleCallback.md
@@ -35,7 +35,7 @@ let abilityLifecycleCallback =  {
     onAbilityCreate(ability){
         console.log("AbilityLifecycleCallback onAbilityCreate.");  
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onWindowStageCreate
@@ -59,7 +59,7 @@ let abilityLifecycleCallback =  {
     onWindowStageCreate(ability, windowStage){
         console.log("AbilityLifecycleCallback onWindowStageCreate.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onWindowStageActive
@@ -83,7 +83,7 @@ let abilityLifecycleCallback =  {
     onWindowStageActive(ability, windowStage){
         console.log("AbilityLifecycleCallback onWindowStageActive.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onWindowStageInactive
@@ -107,7 +107,7 @@ let abilityLifecycleCallback =  {
     onWindowStageInactive(ability, windowStage){
         console.log("AbilityLifecycleCallback onWindowStageInactive.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onWindowStageDestroy
@@ -131,7 +131,7 @@ let abilityLifecycleCallback =  {
     onWindowStageDestroy(ability, windowStage){
         console.log("AbilityLifecycleCallback onWindowStageDestroy.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onAbilityDestroy
@@ -154,7 +154,7 @@ let abilityLifecycleCallback =  {
     onAbilityDestroy(ability){
         console.log("AbilityLifecycleCallback onAbilityDestroy.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onAbilityForeground
@@ -177,7 +177,7 @@ let abilityLifecycleCallback =  {
     onAbilityForeground(ability){
         console.log("AbilityLifecycleCallback onAbilityForeground.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onAbilityBackground
@@ -200,7 +200,7 @@ let abilityLifecycleCallback =  {
     onAbilityBackground(ability){
         console.log("AbilityLifecycleCallback onAbilityBackground.");
     }
-}
+};
 ```
 
 ## AbilityLifecycleCallback.onAbilityContinue
@@ -223,8 +223,9 @@ let abilityLifecycleCallback =  {
     onAbilityContinue(ability){
         console.log("AbilityLifecycleCallback onAbilityContinue.");
     }
-}
+};
 ```
+
 ## AbilityLifecycleCallback使用
 
 **示例：**
@@ -264,7 +265,7 @@ let abilityLifecycleCallback = {
     onAbilityContinue(ability){
         console.log("AbilityLifecycleCallback onAbilityContinue.");
     }
-}
+};
 
 export default class MyFirstAbility extends UIAbility {
     onCreate() {
@@ -284,7 +285,7 @@ export default class MyFirstAbility extends UIAbility {
 
 MySecondAbility.ts
 ```ts
-import UIAbility from "ohos.app.ability.UIAbility"
+import UIAbility from "ohos.app.ability.UIAbility";
 
 export default class MySecondAbility extends UIAbility {
     onDestroy() {
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityManager.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityManager.md
index f90cab2fb3fb4b9e4a3854c47ff29c5453ffa36e..2ca889c93fbe78893b5ac071bd7fbacfa836ccc7 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityManager.md
@@ -10,7 +10,7 @@ AbilityManager模块提供获取、新增、修改Ability相关信息和状态
 ## 导入模块
 
 ```ts
-import abilityManager from '@ohos.app.ability.abilityManager'
+import abilityManager from '@ohos.app.ability.abilityManager';
 ```
 
 ## AbilityState
@@ -57,6 +57,8 @@ updateConfiguration(config: Configuration, callback: AsyncCallback\<void>): void
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 const config = {
   language: 'Zh-Hans',                 // 简体中文
   colorMode: COLOR_MODE_LIGHT,         // 浅色模式
@@ -64,7 +66,7 @@ const config = {
   screenDensity: SCREEN_DENSITY_SDPI,  // 屏幕分辨率为"sdpi"
   displayId: 1,                        // 应用在Id为1的物理屏上显示
   hasPointerDevice: true,              // 指针类型设备已连接
-}
+};
 
 try {
     abilityManager.updateConfiguration(config, (err) => {
@@ -113,6 +115,8 @@ updateConfiguration(config: Configuration): Promise\<void>
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 const config = {
   language: 'Zh-Hans',                 // 简体中文
   colorMode: COLOR_MODE_LIGHT,         // 浅色模式
@@ -120,7 +124,7 @@ const config = {
   screenDensity: SCREEN_DENSITY_SDPI,  // 屏幕分辨率为"sdpi"
   displayId: 1,                        // 应用在Id为1的物理屏上显示
   hasPointerDevice: true,              // 指针类型设备已连接
-}
+};
 
 try {
     abilityManager.updateConfiguration(config).then(() => {
@@ -150,9 +154,19 @@ getAbilityRunningInfos(callback: AsyncCallback\<Array\<AbilityRunningInfo>>): vo
 | --------- | ---------------------------------------- | ---- | -------------- |
 | callback  | AsyncCallback\<Array\<[AbilityRunningInfo](js-apis-inner-application-abilityRunningInfo.md)>>  | 是    | 以回调方式返回接口运行结果及运行中的ability信息，可进行错误处理或其他自定义处理。      |
 
+**错误码**：
+
+| 错误码ID | 错误信息 |
+| ------- | -------- |
+| 16000050 | Internal error. |
+
+以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
+
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 try {
     abilityManager.getAbilityRunningInfos((err, data) => {
         if (err.code !== 0) {
@@ -194,6 +208,8 @@ getAbilityRunningInfos(): Promise\<Array\<AbilityRunningInfo>>
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 try {
     abilityManager.getAbilityRunningInfos().then((data) => {
         console.log("getAbilityRunningInfos success, data: " + JSON.stringify(data))
@@ -234,6 +250,8 @@ getExtensionRunningInfos(upperLimit: number, callback: AsyncCallback\<Array\<Ext
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 let upperLimit = 10;
 
 try {
@@ -283,6 +301,8 @@ getExtensionRunningInfos(upperLimit: number): Promise\<Array\<ExtensionRunningIn
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 let upperLimit = 10;
 
 try {
@@ -322,6 +342,8 @@ getTopAbility(callback: AsyncCallback\<ElementName>): void;
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 abilityManager.getTopAbility((err, data) => { 
     if (err.code !== 0) {
         console.log("getTopAbility fail, err: " + JSON.stringify(err));
@@ -356,6 +378,8 @@ getTopAbility(): Promise\<ElementName>;
 **示例**：
 
 ```ts
+import abilityManager from '@ohos.app.ability.abilityManager';
+
 abilityManager.getTopAbility().then((data) => {
     console.log("getTopAbility success, data: " + JSON.stringify(data));
 }).catch((err) => {
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityStage.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityStage.md
index 45db3863df063b0384c7c92c2c10fee71535e38b..310b6df02cfdadc6ef31b9744a7cdb8937e587c8 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityStage.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-abilityStage.md
@@ -26,6 +26,8 @@ onCreate(): void
 **示例：**
     
 ```ts
+import AbilityStage from '@ohos.app.ability.AbilityStage';
+
 class MyAbilityStage extends AbilityStage {
     onCreate() {
         console.log("MyAbilityStage.onCreate is called");
@@ -57,6 +59,8 @@ onAcceptWant(want: Want): string;
 **示例：**
     
 ```ts
+import AbilityStage from '@ohos.app.ability.AbilityStage';
+
 class MyAbilityStage extends AbilityStage {
     onAcceptWant(want) {
         console.log("MyAbilityStage.onAcceptWant called");
@@ -83,6 +87,8 @@ onConfigurationUpdate(newConfig: Configuration): void;
 **示例：**
     
 ```ts
+import AbilityStage from '@ohos.app.ability.AbilityStage';
+
 class MyAbilityStage extends AbilityStage {
     onConfigurationUpdate(config) {
         console.log('onConfigurationUpdate, language:' + config.language);
@@ -107,6 +113,8 @@ onMemoryLevel(level: AbilityConstant.MemoryLevel): void;
 **示例：**
     
 ```ts
+import AbilityStage from '@ohos.app.ability.AbilityStage';
+
 class MyAbilityStage extends AbilityStage {
     onMemoryLevel(level) {
         console.log('onMemoryLevel, level:' + JSON.stringify(level));
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-appManager.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-appManager.md
index 5a8e00916ef1ccafaed9f223418a28e97f8f6778..34cec4de8bedaf1001810412b0c4430df8f065f0 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-appManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-appManager.md
@@ -37,6 +37,8 @@ static isRunningInStabilityTest(callback: AsyncCallback&lt;boolean&gt;): void
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.isRunningInStabilityTest((err, flag) => {
     if (err.code !== 0) {
         console.log("isRunningInStabilityTest faile, err: " + JSON.stringify(err));
@@ -72,6 +74,8 @@ static isRunningInStabilityTest(): Promise&lt;boolean&gt;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.isRunningInStabilityTest().then((flag) => {
     console.log("The result of isRunningInStabilityTest is:" + JSON.stringify(flag));
 }).catch((error) => {
@@ -105,6 +109,8 @@ isRamConstrainedDevice(): Promise\<boolean>;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.isRamConstrainedDevice().then((data) => {
     console.log("The result of isRamConstrainedDevice is:" + JSON.stringify(data));
 }).catch((error) => {
@@ -137,6 +143,8 @@ isRamConstrainedDevice(callback: AsyncCallback\<boolean>): void;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.isRamConstrainedDevice((err, data) => {
     if (err.code !== 0) {
         console.log("isRamConstrainedDevice faile, err: " + JSON.stringify(err));
@@ -171,6 +179,8 @@ getAppMemorySize(): Promise\<number>;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.getAppMemorySize().then((data) => {
     console.log("The size of app memory is:" + JSON.stringify(data));
 }).catch((error) => {
@@ -203,6 +213,8 @@ getAppMemorySize(callback: AsyncCallback\<number>): void;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.getAppMemorySize((err, data) => {
     if (err.code !== 0) {
         console.log("getAppMemorySize faile, err: " + JSON.stringify(err));
@@ -241,6 +253,8 @@ getProcessRunningInformation(): Promise\<Array\<ProcessRunningInformation>>;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.getProcessRunningInformation().then((data) => {
     console.log("The process running information is:" + JSON.stringify(data));
 }).catch((error) => {
@@ -277,6 +291,8 @@ getProcessRunningInformation(callback: AsyncCallback\<Array\<ProcessRunningInfor
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.getProcessRunningInformation((err, data) => {
     if (err.code !== 0) {
         console.log("getProcessRunningInformation faile, err: " + JSON.stringify(err));
@@ -322,6 +338,8 @@ on(type: "applicationState", observer: ApplicationStateObserver): number;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let applicationStateObserver = {
     onForegroundApplicationChanged(appStateData) {
         console.log(`[appManager] onForegroundApplicationChanged: ${JSON.stringify(appStateData)}`);
@@ -384,6 +402,8 @@ on(type: "applicationState", observer: ApplicationStateObserver, bundleNameList:
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let applicationStateObserver = {
     onForegroundApplicationChanged(appStateData) {
         console.log(`[appManager] onForegroundApplicationChanged: ${JSON.stringify(appStateData)}`);
@@ -441,7 +461,9 @@ off(type: "applicationState", observerId: number,  callback: AsyncCallback\<void
 **示例：**
 
 ```ts
-let observeId: int = 0;
+import appManager from '@ohos.app.ability.appManager';
+
+let observeId = 0;
 
 // 1.注册应用状态监听器
 let applicationStateObserver = {
@@ -520,7 +542,9 @@ off(type: "applicationState", observerId: number): Promise\<void>;
 **示例：**
 
 ```ts
-let observeId: int = 0;
+import appManager from '@ohos.app.ability.appManager';
+
+let observeId = 0;
 
 // 1.注册应用状态监听器
 let applicationStateObserver = {
@@ -589,6 +613,8 @@ getForegroundApplications(callback: AsyncCallback\<Array\<AppStateData>>): void;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 function getForegroundApplicationsCallback(err, data) {
     if (err.code !== 0) {
         console.log("getForegroundApplicationsCallback fail, err: " + JSON.stringify(err));
@@ -632,6 +658,8 @@ getForegroundApplications(): Promise\<Array\<AppStateData>>;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 appManager.getForegroundApplications().then((data) => {
     console.log("getForegroundApplications success, data: " + JSON.stringify(data));
 }).catch((err) => {
@@ -669,6 +697,8 @@ killProcessWithAccount(bundleName: string, accountId: number): Promise\<void\>
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let bundleName = 'bundleName';
 let accountId = 0;
 try {
@@ -714,6 +744,8 @@ killProcessWithAccount(bundleName: string, accountId: number, callback: AsyncCal
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let bundleName = 'bundleName';
 let accountId = 0;
 function killProcessWithAccountCallback(err, data) {
@@ -756,6 +788,8 @@ killProcessesByBundleName(bundleName: string, callback: AsyncCallback\<void>);
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let bundleName = 'bundleName';
 function killProcessesByBundleNameCallback(err, data) {
     if (err.code !== 0) {
@@ -806,6 +840,8 @@ killProcessesByBundleName(bundleName: string): Promise\<void>;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let bundleName = 'bundleName';
 try {
     appManager.killProcessesByBundleName(bundleName).then((data) => {
@@ -848,6 +884,8 @@ clearUpApplicationData(bundleName: string, callback: AsyncCallback\<void>);
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let bundleName = 'bundleName';
 function clearUpApplicationDataCallback(err, data) {
     if (err) {
@@ -898,6 +936,8 @@ clearUpApplicationData(bundleName: string): Promise\<void>;
 **示例：**
 
 ```ts
+import appManager from '@ohos.app.ability.appManager';
+
 let bundleName = 'bundleName';
 try {
     appManager.clearUpApplicationData(bundleName).then((data) => {
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-appRecovery.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-appRecovery.md
index 8701d22ee362057ef8d0b1d32a9b97912e580ce8..72c8116699a3130bdb0fe7bd1045e2f14ef50955 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-appRecovery.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-appRecovery.md
@@ -8,7 +8,7 @@ appRecovery模块提供了应用在故障状态下的恢复能力。
 
 ## 导入模块
 ```ts
-import appRecovery from '@ohos.app.ability.appRecovery'
+import appRecovery from '@ohos.app.ability.appRecovery';
 ```
 
 
@@ -67,12 +67,17 @@ enableAppRecovery(restart?: [RestartFlag](#apprecoveryrestartflag), saveOccasion
 **示例：**
     
 ```ts
+import appRecovery from '@ohos.app.ability.appRecovery';
 import AbilityStage from '@ohos.app.ability.AbilityStage';
 import UIAbility from '@ohos.app.ability.UIAbility';
 
 export default class MyAbility extends UIAbility {
     onCreate() {
-        appRecovery.enableAppRecovery(RestartFlag::ALWAYS_RESTART, SaveOccasionFlag::SAVE_WHEN_ERROR, SaveModeFlag::SAVE_WITH_FILE);
+        appRecovery.enableAppRecovery(
+            appRecovery.RestartFlag::ALWAYS_RESTART,
+            appRecovery.SaveOccasionFlag::SAVE_WHEN_ERROR,
+            appRecovery.SaveModeFlag::SAVE_WITH_FILE
+        );
     }
 }
 ```
@@ -89,6 +94,7 @@ restartApp(): void;
 **示例：**
     
 ```ts
+import appRecovery from '@ohos.app.ability.appRecovery';
 import errorManager from '@ohos.app.ability.errorManager';
 
 let observer = {
@@ -96,6 +102,12 @@ let observer = {
         console.log('onUnhandledException, errorMsg: ', errorMsg)
         appRecovery.restartApp();
     }
+};
+
+try {
+    errorManager.on("error", observer);
+} catch (paramError) {
+    console.log("error: " + paramError.code + ", " + paramError.message);
 }
 ```
 
@@ -116,6 +128,7 @@ saveAppState(): boolean;
 **示例：**
     
 ```ts
+import appRecovery from '@ohos.app.ability.appRecovery';
 import errorManager from '@ohos.app.ability.errorManager';
 
 let observer = {
@@ -123,5 +136,11 @@ let observer = {
         console.log('onUnhandledException, errorMsg: ', errorMsg)
         appRecovery.saveAppState();
     }
+};
+
+try {
+    errorManager.on("error", observer);
+} catch (paramError) {
+    console.log("error: " + paramError.code + ", " + paramError.message);
 }
 ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-want.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-want.md
index 19c13000427a72db9a781c4f7a9add5136f2fa56..f6a99d431dbf0d43482dee2b200d536a009c1845 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-want.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-want.md
@@ -1,6 +1,6 @@
 # @ohos.app.ability.Want (Want)
 
-Want是对象间信息传递的载体, 可以用于应用组件间的信息传递。 Want的使用场景之一是作为startAbility的参数, 其包含了指定的启动目标, 以及启动时需携带的相关数据, 如bundleName和abilityName字段分别指明目标Ability所在应用的包名以及对应包内的Ability名称。当Ability A需要启动Ability B并传入一些数据时, 可使用Want作为载体将这些数据传递给Ability B。
+Want是对象间信息传递的载体, 可以用于应用组件间的信息传递。 Want的使用场景之一是作为startAbility的参数, 其包含了指定的启动目标, 以及启动时需携带的相关数据, 如bundleName和abilityName字段分别指明目标Ability所在应用的包名以及对应包内的Ability名称。当UIAbilityA需要启动UIAbilityB并传入一些数据时, 可使用Want作为载体将这些数据传递给UIAbilityB。
 
 > **说明：**
 >
@@ -19,25 +19,25 @@ import Want from '@ohos.app.ability.Want';
 | 名称        | 类型                 | 必填 | 说明                                                         |
 | ----------- | -------------------- | ---- | ------------------------------------------------------------ |
 | deviceId    | string               | 否   | 表示运行指定Ability的设备ID。如果未设置该字段，则表明指定本设备。                                |
-| bundleName   | string               | 否   | 表示Bundle名称。 |
-| abilityName  | string               | 否   | 表示待启动的Ability名称。如果在Want中该字段同时指定了BundleName和AbilityName，则Want可以直接匹配到指定的Ability。AbilityName需要在一个应用的范围内保证唯一。 |
-| uri          | string               | 否   | 表示Uri描述。如果在Want中指定了Uri，则Want将匹配指定的Uri信息，包括scheme, schemeSpecificPart, authority和path信息。 |
-| type         | string               | 否   | 表示MIME type类型描述，打开文件的类型，主要用于文管打开文件。比如："text/xml" 、 "image/*"等，MIME定义参考：https://www.iana.org/assignments/media-types/media-types.xhtml?utm_source=ld246.com。   |
-| flags        | number               | 否   | 表示处理Want的方式。默认传数字，具体参考：[flags说明](js-apis-app-ability-wantConstant.md#wantConstant.Flags)。 |
-| action      | string               | 否   | 表示要执行的通用操作（如：查看、分享、应用详情）。在隐式Want中，您可以定义该字段，配合uri或parameters来表示对数据要执行的操作。具体参考：[action说明](js-apis-app-ability-wantConstant.md#wantConstant.Action)。隐式Want定义及匹配规则参考：[显式Want与隐式Want匹配规则](application-models/explicit-implicit-want-mappings.md)。                           |
-| parameters   | {[key: string]: any} | 否   | 表示WantParams描述，由开发者自行决定传入的键值对。默认会携带以下key值：<br>ohos.aafwk.callerPid 表示拉起方的pid。<br>ohos.aafwk.param.callerToken 表示拉起方的token。<br>ohos.aafwk.param.callerUid 表示[bundleInfo](js-apis-bundleManager-bundleInfo.md#bundleinfo-1)中的uid，应用包里应用程序的uid。                                       |
-| entities    | Array\<string>       | 否   | 表示目标Ability额外的类别信息（如：浏览器、视频播放器）。在隐式Want中是对action字段的补充。在隐式Want中，您可以定义该字段，来过滤匹配Ability类型。具体参考：[entity说明](js-apis-app-ability-wantConstant.md#wantConstant.Entity)。                                    |
-| moduleName | string | 否    | 表示待启动的Ability所属的模块（module）。 |
+| bundleName   | string               | 否   | 表示待启动Ability所在的应用Bundle名称。 |
+| moduleName | string | 否 | 表示待启动的Ability所属的模块名称。 |
+| abilityName  | string               | 否   | 表示待启动Ability名称。如果在Want中该字段同时指定了BundleName和AbilityName，则Want可以直接匹配到指定的Ability。AbilityName需要在一个应用的范围内保证唯一。 |
+| [action](js-apis-app-ability-wantConstant.md#wantConstant.Action) | string               | 否   | 表示要执行的通用操作（如：查看、分享、应用详情）。在隐式Want中，您可以定义该字段，配合uri或parameters来表示对数据要执行的操作。隐式Want定义及匹配规则请参见[显式Want与隐式Want匹配规则](application-models/explicit-implicit-want-mappings.md)。                     |
+| [entities](js-apis-app-ability-wantConstant.md#wantConstant.Entity) | Array\<string> | 否 | 表示目标Ability额外的类别信息（如：浏览器、视频播放器）。在隐式Want中是对action字段的补充。在隐式Want中，您可以定义该字段，来过滤匹配Ability类型。 |
+| uri | string | 否 | 表示携带的数据，一般配合type使用，指明待处理的数据类型。如果在Want中指定了uri，则Want将匹配指定的Uri信息，包括`scheme`、`schemeSpecificPart`、`authority`和`path`信息。 |
+| type | string | 否 | 表示MIME type类型描述，打开文件的类型，主要用于文管打开文件。比如："text/xml" 、 "image/*"等，MIME定义请参见https://www.iana.org/assignments/media-types/media-types.xhtml?utm_source=ld246.com。 |
+| parameters   | {[key: string]: any} | 否   | 表示WantParams描述，由开发者自行决定传入的键值对。默认会携带以下key值：<br />- ohos.aafwk.callerPid：表示拉起方的pid。<br />- ohos.aafwk.param.callerToken：表示拉起方的token。<br />- ohos.aafwk.param.callerUid：表示[BundleInfo](js-apis-bundleManager-bundleInfo.md#bundleinfo-1)中的uid，应用包里应用程序的uid。           |
+| [flags](js-apis-ability-wantConstant.md#wantconstantflags) | number | 否 | 表示处理Want的方式。默认传数字。<br />例如通过wantConstant.Flags.FLAG_ABILITY_CONTINUATION表示是否以设备间迁移方式启动Ability。 |
 
 **示例：**
 
-- 基础用法(在UIAbility对象中调用，其中示例中的context为UIAbility的上下文对象)
+- 基础用法（在UIAbility对象中调用，其中示例中的context为UIAbility的上下文对象）。
 
   ```ts
     let want = {
         "deviceId": "", // deviceId为空表示本设备
-        "bundleName": "com.extreme.test",
-        "abilityName": "MainAbility",
+        "bundleName": "com.example.myapplication",
+        "abilityName": "FuncAbility",
         "moduleName": "entry" // moduleName非必选
     };
     this.context.startAbility(want, (error) => {
@@ -46,13 +46,13 @@ import Want from '@ohos.app.ability.Want';
     })
   ```
 
-- 通过自定字段传递数据, 以下为当前支持类型。(在UIAbility对象中调用，其中示例中的context为UIAbility的上下文对象)
+- 通过自定字段传递数据, 以下为当前支持类型（在UIAbility对象中调用，其中示例中的context为UIAbility的上下文对象）。
 
     * 字符串（String）
         ```ts
         let want = {
-            bundleName: "com.example.demo",
-            abilityName: "com.example.demo.MainAbility",
+            bundleName: "com.example.myapplication",
+            abilityName: "FuncAbility",
             parameters: {
                 keyForString: "str",
             },
@@ -61,8 +61,8 @@ import Want from '@ohos.app.ability.Want';
     * 数字（Number）
         ```ts
         let want = {
-            bundleName: "com.example.demo",
-            abilityName: "com.example.demo.MainAbility",
+            bundleName: "com.example.myapplication",
+            abilityName: "FuncAbility",
             parameters: {
                 keyForInt: 100,
                 keyForDouble: 99.99,
@@ -72,8 +72,8 @@ import Want from '@ohos.app.ability.Want';
     * 布尔（Boolean）
         ```ts
         let want = {
-            bundleName: "com.example.demo",
-            abilityName: "com.example.demo.MainAbility",
+            bundleName: "com.example.myapplication",
+            abilityName: "FuncAbility",
             parameters: {
                 keyForBool: true,
             },
@@ -82,8 +82,8 @@ import Want from '@ohos.app.ability.Want';
     * 对象（Object）
         ```ts
         let want = {
-            bundleName: "com.example.demo",
-            abilityName: "com.example.demo.MainAbility",
+            bundleName: "com.example.myapplication",
+            abilityName: "FuncAbility",
             parameters: {
                 keyForObject: {
                     keyForObjectString: "str",
@@ -97,8 +97,8 @@ import Want from '@ohos.app.ability.Want';
     * 数组（Array）
         ```ts
         let want = {
-            bundleName: "com.example.demo",
-            abilityName: "com.example.demo.MainAbility",
+            bundleName: "com.example.myapplication",
+            abilityName: "FuncAbility",
             parameters: {
                 keyForArrayString: ["str1", "str2", "str3"],
                 keyForArrayInt: [100, 200, 300, 400],
@@ -109,30 +109,29 @@ import Want from '@ohos.app.ability.Want';
         ```
     * 文件描述符（FD）
         ```ts
-            import fileio from '@ohos.fileio';
-            let fd;
-            try {
-                fd = fileio.openSync("/data/storage/el2/base/haps/pic.png");
-            } catch(e) {
-                console.log("openSync fail:" + JSON.stringify(e));
+        import fileio from '@ohos.fileio';
+        let fd;
+        try {
+            fd = fileio.openSync("/data/storage/el2/base/haps/pic.png");
+        } catch(e) {
+            console.log("openSync fail:" + JSON.stringify(e));
+        }
+        let want = {
+            "deviceId": "", // deviceId为空表示本设备
+            "bundleName": "com.example.myapplication",
+            "abilityName": "FuncAbility",
+            "moduleName": "entry", // moduleName非必选
+            "parameters": {
+                "keyFd":{"type":"FD", "value":fd}
             }
-            let want = {
-                "deviceId": "", // deviceId为空表示本设备
-                "bundleName": "com.extreme.test",
-                "abilityName": "MainAbility",
-                "moduleName": "entry", // moduleName非必选
-                "parameters": {
-                    "keyFd":{"type":"FD", "value":fd}
-                }
-            };
-            this.context.startAbility(want, (error) => {
-                // 显式拉起Ability，通过bundleName、abilityName和moduleName可以唯一确定一个Ability
-                console.log("error.code = " + error.code)
-            })
+        };
+        this.context.startAbility(want, (error) => {
+            // 显式拉起Ability，通过bundleName、abilityName和moduleName可以唯一确定一个Ability
+            console.log("error.code = " + error.code)
+        })
         ```
 
 - 更多详细说明和示例请参见： [应用模型](../../application-models/Readme-CN.md)的信息传递载体Want
 
   <!--no_check-->
 
-
diff --git a/zh-cn/application-dev/reference/apis/js-apis-app-ability-wantAgent.md b/zh-cn/application-dev/reference/apis/js-apis-app-ability-wantAgent.md
index cfe7cc925efc1f34bdf4d48631ae47c38ba7fa6e..5f345d559ef34c5f33f55f2b7f103db8a45a6136 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-app-ability-wantAgent.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-app-ability-wantAgent.md
@@ -24,10 +24,11 @@ getWantAgent(info: WantAgentInfo, callback: AsyncCallback\<WantAgent\>): void
 
 | 参数名     | 类型                       | 必填 | 说明                    |
 | -------- | -------------------------- | ---- | ----------------------- |
-| info     | WantAgentInfo              | 是   | WantAgent信息。           |
+| info     | [WantAgentInfo](js-apis-inner-wantAgent-wantAgentInfo.md)              | 是   | WantAgent信息。           |
 | callback | AsyncCallback\<WantAgent\> | 是   | 创建WantAgent的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -53,33 +54,30 @@ getWantAgent(info: WantAgentInfo, callback: AsyncCallback\<WantAgent\>): void
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -91,15 +89,15 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(err));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -127,6 +125,7 @@ getWantAgent(info: WantAgentInfo): Promise\<WantAgent\>
 | Promise\<WantAgent\> | 以Promise形式返回WantAgent。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -152,30 +151,28 @@ getWantAgent(info: WantAgentInfo): Promise\<WantAgent\>
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -214,6 +211,7 @@ getBundleName(agent: WantAgent, callback: AsyncCallback\<string\>): void
 | callback | AsyncCallback\<string\> | 是   | 获取WantAgent实例的包名的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -243,26 +241,26 @@ getBundleName(agent: WantAgent, callback: AsyncCallback\<string\>): void
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -274,7 +272,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(wantAgent));
@@ -293,9 +291,9 @@ function getWantAgentCallback(err, data) {
         console.info('getBundleName failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -323,6 +321,7 @@ getBundleName(agent: WantAgent): Promise\<string\>
 | Promise\<string\> | 以Promise形式返回获取WantAgent实例的包名。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -348,32 +347,30 @@ getBundleName(agent: WantAgent): Promise\<string\>
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
  //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -385,7 +382,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed!' + JSON.stringify(wantAgent));
@@ -400,9 +397,9 @@ function getWantAgentCallback(err, data) {
         console.info('getBundleName failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -425,6 +422,7 @@ getUid(agent: WantAgent, callback: AsyncCallback\<number\>): void
 | callback | AsyncCallback\<number\> | 是   | 获取WantAgent实例的用户ID的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -450,33 +448,31 @@ getUid(agent: WantAgent, callback: AsyncCallback\<number\>): void
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 import WantAgent from '@ohos.app.ability.wantAgent';
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -488,7 +484,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(err));
@@ -507,9 +503,9 @@ function getWantAgentCallback(err, data) {
         console.info('getUid failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -537,6 +533,7 @@ getUid(agent: WantAgent): Promise\<number\>
 | Promise\<number\> | 以Promise形式返回获取WantAgent实例的用户ID。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -562,32 +559,30 @@ getUid(agent: WantAgent): Promise\<number\>
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -599,7 +594,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed!' + JSON.stringify(wantAgent));
@@ -614,9 +609,9 @@ function getWantAgentCallback(err, data) {
         console.info('getUid failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -640,7 +635,7 @@ getWant(agent: WantAgent, callback: AsyncCallback\<Want\>): void
 | callback | AsyncCallback\<[Want](js-apis-app-ability-want.md)\> | 是   | 获取WantAgent对象want的回调方法。 |
 
 **错误码：**
-|错误码ID    |错误信息            |
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -666,32 +661,30 @@ getWant(agent: WantAgent, callback: AsyncCallback\<Want\>): void
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -703,7 +696,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(wantAgent));
@@ -722,9 +715,9 @@ function getWantAgentCallback(err, data) {
         console.info('getWant failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -754,6 +747,7 @@ getWant(agent: WantAgent): Promise\<Want\>
 | Promise\<Want\> | 以Promise形式返回获取WantAgent对象的want。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -779,32 +773,30 @@ getWant(agent: WantAgent): Promise\<Want\>
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -816,7 +808,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed!' + JSON.stringify(wantAgent));
@@ -831,9 +823,9 @@ function getWantAgentCallback(err, data) {
         console.info('getUid failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -856,6 +848,7 @@ cancel(agent: WantAgent, callback: AsyncCallback\<void\>): void
 | callback | AsyncCallback\<void\> | 是   | 取消WantAgent实例的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -881,32 +874,30 @@ cancel(agent: WantAgent, callback: AsyncCallback\<void\>): void
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -918,7 +909,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(wantAgent));
@@ -937,9 +928,9 @@ function getWantAgentCallback(err, data) {
         console.info('cancel failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -967,6 +958,7 @@ cancel(agent: WantAgent): Promise\<void\>
 | Promise\<void\> | 以Promise形式获取异步返回结果。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -992,32 +984,30 @@ cancel(agent: WantAgent): Promise\<void\>
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1029,7 +1019,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed!' + JSON.stringify(wantAgent));
@@ -1044,9 +1034,9 @@ function getWantAgentCallback(err, data) {
         console.info('cancel failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -1068,6 +1058,7 @@ trigger(agent: WantAgent, triggerInfo: TriggerInfo, callback?: AsyncCallback\<Co
 | callback    | AsyncCallback\<[CompleteData](#completedata)\> | 否   | 主动激发WantAgent实例的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -1093,36 +1084,34 @@ trigger(agent: WantAgent, triggerInfo: TriggerInfo, callback?: AsyncCallback\<Co
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 // triggerInfo
-var triggerInfo = {
+let triggerInfo = {
         code: 0 //自定义义结果码
     }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1134,7 +1123,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(wantAgent));
@@ -1153,9 +1142,9 @@ function getWantAgentCallback(err, data) {
         console.info('getUid failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -1166,7 +1155,7 @@ try{
 
 equal(agent: WantAgent, otherAgent: WantAgent, callback: AsyncCallback\<boolean\>): void
 
-判断两个WantAgent实例是否相等（callback形式）。
+判断两个WantAgent实例是否相等（Callback形式）,以此来判断是否是来自同一应用的相同操作。
 
 **系统能力**：SystemCapability.Ability.AbilityRuntime.Core
 
@@ -1179,6 +1168,7 @@ equal(agent: WantAgent, otherAgent: WantAgent, callback: AsyncCallback\<boolean\
 | callback   | AsyncCallback\<boolean\> | 是   | 判断两个WantAgent实例是否相等的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -1204,33 +1194,31 @@ equal(agent: WantAgent, otherAgent: WantAgent, callback: AsyncCallback\<boolean\
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent1;
-var wantAgent2;
+let wantAgent1;
+let wantAgent2;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1242,7 +1230,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent1 = data;
         wantAgent2 = data;
     } else {
@@ -1262,9 +1250,9 @@ function getWantAgentCallback(err, data) {
         console.info('equal failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -1275,7 +1263,7 @@ try{
 
 equal(agent: WantAgent, otherAgent: WantAgent): Promise\<boolean\>
 
-判断两个WantAgent实例是否相等（Promise形式）。
+判断两个WantAgent实例是否相等（Promise形式）,以此来判断是否是来自同一应用的相同操作。
 
 **系统能力**：SystemCapability.Ability.AbilityRuntime.Core
 
@@ -1293,6 +1281,7 @@ equal(agent: WantAgent, otherAgent: WantAgent): Promise\<boolean\>
 | Promise\<boolean\> | 以Promise形式返回获取判断两个WantAgent实例是否相等的结果。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -1318,33 +1307,31 @@ equal(agent: WantAgent, otherAgent: WantAgent): Promise\<boolean\>
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent1;
-var wantAgent2;
+let wantAgent1;
+let wantAgent2;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1356,7 +1343,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent1 = data;
         wantAgent2 = data;
     } else {
@@ -1372,9 +1359,9 @@ function getWantAgentCallback(err, data) {
         console.info('equal failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -1395,6 +1382,7 @@ getOperationType(agent: WantAgent, callback: AsyncCallback\<number>): void;
 | callback   | AsyncCallback\<number> | 是   | 获取一个WantAgent的OperationType信息的回调方法。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -1420,32 +1408,30 @@ getOperationType(agent: WantAgent, callback: AsyncCallback\<number>): void;
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1457,7 +1443,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed' + JSON.stringify(wantAgent));
@@ -1476,9 +1462,9 @@ function getWantAgentCallback(err, data) {
         console.info('getOperationTypeCallback failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
@@ -1504,6 +1490,7 @@ getOperationType(agent: WantAgent): Promise\<number>;
 | Promise\<number> | 以Promise形式返回获取operationType的结果。 |
 
 **错误码：**
+错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)
 | 错误码ID    | 错误信息            |
 |-----------|--------------------|
 | 16000001   | Input error. The specified ability name does not exist. |
@@ -1529,32 +1516,30 @@ getOperationType(agent: WantAgent): Promise\<number>;
 | 16000152   | wantAgent object not found.|
 | 16000153   | wangAgent object canceled.|
 
-以上错误码详细介绍请参考[errcode-ability](../errorcodes/errorcode-ability.md)。
-
 **示例：**
 
 ```ts
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1566,7 +1551,7 @@ var wantAgentInfo = {
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-    if (err == undefined) {
+    if (err === undefined) {
         wantAgent = data;
     } else {
         console.info('getWantAgent failed!' + JSON.stringify(wantAgent));
@@ -1581,9 +1566,9 @@ function getWantAgentCallback(err, data) {
         console.info('getOperationType failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
     }
 }
-try{
+try {
     WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
-} catch(err){
+} catch(err) {
     console.info('getWantAgent failed!' + JSON.stringify(err.code) + JSON.stringify(err.message));
 }
 ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-buffer.md b/zh-cn/application-dev/reference/apis/js-apis-buffer.md
index 33f6d16e90e4a44034281d7d598a96fa9e1a458b..3395c225e3a01019355c7a1680387e189886ba9d 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-buffer.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-buffer.md
@@ -1,11 +1,12 @@
 # @ohos.buffer (Buffer)
 
-> **说明：**
-> 本模块首批接口从API version 9开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。
+Buffer对象用于表示固定长度的字节序列，是专门存放二进制数据的缓存区。
 
-Buffer对象用于表示固定长度的字节序列,是专门存放二进制数据的缓存区。
+**推荐使用场景：** 可用于处理大量二进制数据，图片处理、文件接收上传等。
 
-**推荐使用场景：** 可用于处理大量二进制数据，处理图片、文件接收上传等等
+> **说明：**
+>
+> 本模块首批接口从API version 9开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。
 
 ## 导入模块
 
@@ -21,29 +22,27 @@ import buffer from '@ohos.buffer';
 
 | 编码格式    | 说明                 |
 | ------- | -------------------- |
-| ascii  | 表示ascii格式。   |
-| utf8  | 表示utf8格式。   |
-| utf-8 | 表示utf8格式。 |
-| utf16le | 表示utf16小端序格式。 |
-| ucs2 | 表示utf16小端序格式。 |
-| ucs-2 | 表示utf16小端序格式。 |
-| base64 | 表示base64格式。 |
-| base64url | 表示base64格式。 |
-| latin1 | 表示ascii格式。 |
-| binary | 表示二进制格式。 |
-| hex | 表示十六进制格式。 |
-
-## Buffer
+| 'ascii' | 表示ascii格式，不区分大小写。 |
+| 'utf8' | 表示utf8格式，不区分大小写。 |
+| 'utf-8' | 表示utf8格式，不区分大小写。 |
+| 'utf16le' | 表示utf16小端序格式，不区分大小写。 |
+| 'ucs2' | 表示utf16小端序格式，不区分大小写。 |
+| 'ucs-2' | 表示utf16小端序格式，不区分大小写。 |
+| 'base64' | 表示base64格式，不区分大小写。 |
+| 'base64url' | 表示base64格式，不区分大小写。 |
+| 'latin1' | 表示ascii格式，不区分大小写。 |
+| 'binary' | 表示二进制格式，不区分大小写。 |
+| 'hex' | 表示十六进制格式，不区分大小写。 |
 
-### 属性
+## 属性
 
 **系统能力：** SystemCapability.Utils.Lang
 
 | 名称 | 类型 | 可读 | 可写 | 说明 |
 | -------- | -------- | -------- | -------- | -------- |
-| length | number | 是 | 否 | buffer的字节长度。 |
+| length | number | 是 | 否 | Buffer对象的字节长度。 |
 | buffer | ArrayBuffer | 是 | 否 | ArrayBuffer对象。 |
-| byteOffset | number | 是 | 否 | 当前buffer所在内存池的偏移量。 |
+| byteOffset | number | 是 | 否 | 当前Buffer所在内存池的偏移量。 |
 
 **错误码：**
 
@@ -65,11 +64,11 @@ console.log(JSON.stringify(new Uint8Array(arrayBuffer)));
 console.log(JSON.stringify(buf.byteOffset));
 ```
 
-### alloc
+## buffer.alloc
 
 alloc(size: number, fill?: string | Buffer | number, encoding?: BufferEncoding): Buffer
 
-创建`size`个字节长度的Buffer实例，并初始化。
+创建一定字节长度的Buffer对象，并初始化。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -77,15 +76,15 @@ alloc(size: number, fill?: string | Buffer | number, encoding?: BufferEncoding):
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| size | number | 是 | 指定的Buffer实例长度，单位：字节。 |
-| fill | string&nbsp;\|&nbsp;Buffer&nbsp;\|&nbsp;number | 否 | 预填充的值，默认值: 0 |
-| encoding | [BufferEncoding](#bufferencoding) | 否 | 编码方式（当`fill`为string时，才有意义）。 默认值: 'utf-8' |
+| size | number | 是 | 指定的Buffer对象长度，单位：字节。 |
+| fill | string&nbsp;\|&nbsp;Buffer&nbsp;\|&nbsp;number | 否 | 填充至新缓存区的值，默认值: 0。 |
+| encoding | [BufferEncoding](#bufferencoding) | 否 | 编码格式（当`fill`为string时，才有意义）。 默认值: 'utf-8'。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 带初始化的Buffer实例。 |
+| Buffer | 返回一个Buffer对象。 |
 
 **示例：**
 
@@ -97,12 +96,12 @@ let buf2 = buffer.alloc(5, 'a');
 let buf3 = buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64');
 ```
 
-### allocUninitializedFromPool
+## buffer.allocUninitializedFromPool
 
 allocUninitializedFromPool(size: number): Buffer
 
-创建指定大小的未被初始化Buffer实例。内存从缓冲池分配。
-创建的Buffer的内容未知，需要使用fill()函数来初始化Buffer实例。
+创建指定大小未被初始化的Buffer对象。内存从缓冲池分配。
+创建的Buffer的内容未知，需要使用[buffer.fill](#bufferfill)函数来初始化Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -110,7 +109,7 @@ allocUninitializedFromPool(size: number): Buffer
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| size | number | 是 | 指定的Buffer实例长度，单位：字节。 |
+| size | number | 是 | 指定的Buffer对象长度，单位：字节。 |
 
 **返回值：**
 
@@ -127,11 +126,12 @@ let buf = buffer.allocUninitializedFromPool(10);
 buf.fill(0);
 ```
 
-### allocUninitialized
+## buffer.allocUninitialized
 
 allocUninitialized(size: number): Buffer
 
-创建指定大小的未被初始化Buffer实例。内存不从缓冲池分配。
+创建指定大小未被初始化的Buffer实例。内存不从缓冲池分配。
+创建的Buffer的内容未知，需要使用[buffer.fill](#bufferfill)函数来初始化Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -139,7 +139,7 @@ allocUninitialized(size: number): Buffer
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| size | number | 是 |指定的Buffer实例长度，单位：字节。 |
+| size | number | 是 |指定的Buffer对象长度，单位：字节。 |
 
 **返回值：**
 
@@ -156,11 +156,11 @@ let buf = buffer.allocUninitialized(10);
 buf.fill(0);
 ```
 
-### byteLength
+## buffer.byteLength
 
 byteLength(string: string | Buffer | TypedArray | DataView | ArrayBuffer | SharedArrayBuffer, encoding?: BufferEncoding): number
 
-根据不同的编码方法，返回字符串的字节数。
+根据不同的编码方法，返回指定字符串的字节数。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -169,13 +169,13 @@ byteLength(string: string | Buffer | TypedArray | DataView | ArrayBuffer | Share
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
 | string | string&nbsp;\|&nbsp;Buffer&nbsp;\|&nbsp;TypedArray&nbsp;\|&nbsp;DataView&nbsp;\|&nbsp;ArrayBuffer&nbsp;\|&nbsp;SharedArrayBuffer | 是 | 指定字符串。 |
-| encoding | [BufferEncoding](#bufferencoding) | 否 | 编码方式。 默认值: 'utf-8' |
+| encoding | [BufferEncoding](#bufferencoding) | 否 | 编码格式。 默认值: 'utf-8'。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| number | 返回字符串的字节数 |
+| number | 返回指定字符串的字节数。 |
 
 **示例：**
 
@@ -187,11 +187,11 @@ console.log(`${str}: ${str.length} characters, ${buffer.byteLength(str, 'utf-8')
 // 打印: ½ + ¼ = ¾: 9 characters, 12 bytes
 ```
 
-### compare
+## buffer.compare
 
 compare(buf1: Buffer | Uint8Array, buf2: Buffer | Uint8Array): -1 | 0 | 1
 
-返回比较buf1和buf2的结果, 通常用于对Buffer实例的数组进行排序。
+返回两个数组的比较结果，通常用于对Buffer对象数组进行排序。
 
 
 **系统能力：** SystemCapability.Utils.Lang
@@ -207,7 +207,7 @@ compare(buf1: Buffer | Uint8Array, buf2: Buffer | Uint8Array): -1 | 0 | 1
 
 | 类型 | 说明 |
 | -------- | -------- |
-| -1&nbsp;\|&nbsp;0&nbsp;\|&nbsp;1 | 如果buf1与buf2相同，则返回0<br/>如果排序时buf1位于buf2之后，则返回1<br/>如果排序时buf1位于buf2之前，则返回-1。 |
+| -1&nbsp;\|&nbsp;0&nbsp;\|&nbsp;1 | 如果buf1与buf2相同，则返回0。<br/>如果排序时buf1位于buf2之后，则返回1。<br/>如果排序时buf1位于buf2之前，则返回-1。 |
 
 **示例：**
 
@@ -221,11 +221,11 @@ let res = buf1.compare(buf2);
 console.log(Number(res).toString()); // 打印 1
 ```
 
-### concat
+## buffer.concat
 
 concat(list: Buffer[] | Uint8Array[], totalLength?: number): Buffer
 
-将`list`中的实例内容复制`totalLength`字节长度到新的Buffer实例中并返回。
+将数组中的内容复制指定字节长度到新的Buffer对象中并返回。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -234,13 +234,13 @@ concat(list: Buffer[] | Uint8Array[], totalLength?: number): Buffer
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
 | list | Buffer[]&nbsp;\|&nbsp;Uint8Array[] | 是 | 实例数组。 |
-| totalLength | number | 否 | 需要融合的总字节长度。 |
+| totalLength | number | 否 | 需要复制的总字节长度。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 返回新Buffer的实例。 |
+| Buffer | 返回新的Buffer对象。 |
 
 **错误码：**
 
@@ -261,11 +261,11 @@ let buf = buffer.concat([buf1, buf2]);
 console.log(buf.toString('hex')); // 3132333461626364
 ```
 
-### from
+## buffer.from
 
 from(array: number[]): Buffer;
 
-根据指定数组创建新的Buffer实例。
+根据指定数组创建新的Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -279,7 +279,7 @@ from(array: number[]): Buffer;
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 新的Buffer实例。 |
+| Buffer | 新的Buffer对象。 |
 
 **示例：**
 
@@ -290,11 +290,11 @@ let buf = buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
 console.log(buf.toString('hex')); // 627566666572
 ```
 
-### from
+## buffer.from
 
 from(arrayBuffer: ArrayBuffer | SharedArrayBuffer, byteOffset?: number, length?: number): Buffer
 
-创建指定长度的与`arrayBuffer`共享内存的Buffer实例
+创建指定长度的与`arrayBuffer`共享内存的Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -304,13 +304,13 @@ from(arrayBuffer: ArrayBuffer | SharedArrayBuffer, byteOffset?: number, length?:
 | -------- | -------- | -------- | -------- |
 | arrayBuffer | ArrayBuffer&nbsp;\|&nbsp;SharedArrayBuffer | 是 | 实例对象。 |
 | byteOffset | number | 否 | 字节偏移量，默认值: 0。 |
-| length | number | 否 | 字节长度， 默认值: arrayBuffer.byteLength - byteOffset。 |
+| length | number | 否 | 字节长度， 默认值: (arrayBuffer.byteLength - byteOffset)。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 返回一个共享内存的Buffer实例。 |
+| Buffer | 返回一个共享内存的Buffer对象。 |
 
 **错误码：**
 
@@ -329,11 +329,11 @@ let ab = new ArrayBuffer(10);
 let buf = buffer.from(ab, 0, 2);
 ```
 
-### from
+## buffer.from
 
 from(buffer: Buffer | Uint8Array): Buffer
 
-创建并复制`buffer`数据到新的Buffer实例并返回。
+创建并复制`buffer`数据到新的Buffer对象并返回。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -341,13 +341,13 @@ from(buffer: Buffer | Uint8Array): Buffer
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| buffer | Buffer&nbsp;\|&nbsp;Uint8Array | 是 | 实例数据。 |
+| buffer | Buffer&nbsp;\|&nbsp;Uint8Array | 是 | 对象数据。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 新的Buffer实例。 |
+| Buffer | 新的Buffer对象。 |
 
 **示例：**
 
@@ -358,11 +358,11 @@ let buf1 = buffer.from('buffer');
 let buf2 = buffer.from(buf1);
 ```
 
-### from
+## buffer.from
 
 from(object: Object, offsetOrEncoding: number | string, length: number): Buffer
 
-根据指定的`object`类型数据，创建新的Buffer实例。
+根据指定的`object`类型数据，创建新的Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -370,29 +370,29 @@ from(object: Object, offsetOrEncoding: number | string, length: number): Buffer
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| object | Object | 是 | 支持Symbol.toPrimitive或valueOf()的对象 |
-| offsetOrEncoding | number&nbsp;\|&nbsp;string | 是 | 字节偏移量或编码。 |
+| object | Object | 是 | 支持Symbol.toPrimitive或valueOf()的对象。 |
+| offsetOrEncoding | number&nbsp;\|&nbsp;string | 是 | 字节偏移量或编码格式。 |
 | length | number | 是 | 字节长度。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 新的Buffer实例。 |
+| Buffer | 返回新的Buffer对象。 |
 
 **示例：**
 
 ```ts
 import buffer from '@ohos.buffer';
 
-let buf = buffer.from(new String('this is a test'));
+let buf = buffer.from(new String('this is a test'), 'utf8', 14);
 ```
 
-### from
+## buffer.from
 
 from(string: String, encoding?: BufferEncoding): Buffer
 
-根据指定编码格式的字符串，创建新的Buffer实例。
+根据指定编码格式的字符串，创建新的Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -407,7 +407,7 @@ from(string: String, encoding?: BufferEncoding): Buffer
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 新的Buffer实例。 |
+| Buffer | 返回新的Buffer对象。 |
 
 **示例：**
 
@@ -422,7 +422,7 @@ console.log(buf2.toString());
 ```
 
 
-### isBuffer
+## buffer.isBuffer
 
 isBuffer(obj: Object): boolean
 
@@ -454,7 +454,7 @@ buffer.isBuffer([]); // false
 buffer.isBuffer(new Uint8Array(1024)); // false
 ```
 
-### isEncoding
+## buffer.isEncoding
 
 isEncoding(encoding: string): boolean
 
@@ -472,7 +472,7 @@ isEncoding(encoding: string): boolean
 
 | 类型 | 说明 |
 | -------- | -------- |
-| boolean | true或者false。 |
+| boolean | 是支持的编码格式返回true，反之则返回false。 |
 
 **示例：**
 
@@ -485,11 +485,11 @@ console.log(buffer.isEncoding('utf/8').toString());	// 打印: false
 console.log(buffer.isEncoding('').toString());	// 打印: false
 ```
 
-### compare
+## buffer.compare
 
 compare(target: Buffer | Uint8Array, targetStart?: number, targetEnd?: number, sourceStart?: number, sourceEnd?: number): -1 | 0 | 1
 
-`this`实例对象与`target`实例对象进行比较，返回buf在排序中的顺序，-1:前排序，0:与buf相同，1:后排序。
+当前Buffer对象与目标Buffer对象进行比较，并返回Buffer在排序中的顺序结果。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -499,15 +499,15 @@ compare(target: Buffer | Uint8Array, targetStart?: number, targetEnd?: number, s
 | -------- | -------- | -------- | -------- |
 | target | Buffer&nbsp;\|&nbsp;Uint8Array | 是 | 要比较的实例对象。 |
 | targetStart | number | 否 | `target`实例中开始的偏移量。 默认值: 0。 |
-| targetEnd | number | 否 | `target`实例中结束的偏移量（不包括本身）。 默认值: target.length。 |
+| targetEnd | number | 否 | `target`实例中结束的偏移量（不包含结束位置）。 默认值: 目标对象的字节长度。 |
 | sourceStart | number | 否 | `this`实例中开始的偏移量。 默认值: 0。 |
-| sourceEnd | number | 否 | `this`实例中结束的偏移量（不包括本身）。 默认值: buf.length。 |
+| sourceEnd | number | 否 | `this`实例中结束的偏移量（不包含结束位置）。 默认值: 当前对象的字节长度。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| number | 比较结果。-1:前排序，0:与buf相同，1:后排序。 |
+| number | 返回比较结果。-1：当前排列在目标前，0：当前与目标相同，1：当前排列在目标后。 |
 
 **错误码：**
 
@@ -530,7 +530,7 @@ console.log(buf1.compare(buf2, 0, 6, 4).toString());	// 打印: -1
 console.log(buf1.compare(buf2, 5, 6, 5).toString());	// 打印: 1
 ```
 
-### copy
+## buffer.copy
 
 copy(target: Buffer| Uint8Array, targetStart?: number, sourceStart?: number, sourceEnd?: number): number
 
@@ -545,7 +545,7 @@ copy(target: Buffer| Uint8Array, targetStart?: number, sourceStart?: number, sou
 | target | Buffer&nbsp;\|&nbsp;Uint8Array | 是 | 要复制到的Buffer或Uint8Array实例。 |
 | targetStart | number | 否 | `target`实例中开始写入的偏移量。 默认值: 0。 |
 | sourceStart | number | 否 | `this`实例中开始复制的偏移量。 默认值: 0。 |
-| sourceEnd | number | 否 | `this`实例中结束复制的偏移量（不包括）。 默认值: buf.length。 |
+| sourceEnd | number | 否 | `this`实例中结束复制的偏移量（不包含结束位置）。 默认值: 当前对象的字节长度。 |
 
 **返回值：**
 
@@ -578,7 +578,7 @@ console.log(buf2.toString('ascii', 0, 25));
 // 打印: !!!!!!!!qrst!!!!!!!!!!!!!
 ```
 
-### entries
+## buffer.entries
 
 entries(): IterableIterator&lt;[number,&nbsp;number]&gt;
 
@@ -586,6 +586,13 @@ entries(): IterableIterator&lt;[number,&nbsp;number]&gt;
 
 **系统能力：** SystemCapability.Utils.Lang
 
+**返回值：**
+
+| 类型 | 说明 |
+| -------- | -------- |
+| number |  表示迭代器的key值。 |
+| number |  表示迭代器的value值。 |
+
 **示例：**
 
 ```ts
@@ -597,7 +604,7 @@ for (let pair of buf.entries()) {
 }
 ```
 
-### equals
+## buffer.equals
 
 equals(otherBuffer: Uint8Array | Buffer): boolean
 
@@ -630,11 +637,11 @@ console.log(buf1.equals(buf2).toString());	// 打印: true
 console.log(buf1.equals(buf3).toString());	// 打印: false
 ```
 
-### fill
+## buffer.fill
 
 fill(value: string | Buffer | Uint8Array | number, offset?: number, end?: number, encoding?: BufferEncoding): Buffer
 
-用`value`填充`this`实例指定位置的数据，默认为循环填充，并返回填充后的Buffer实例。
+用`value`填充当前对象指定位置的数据，默认为循环填充，并返回填充后的Buffer对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -644,14 +651,14 @@ fill(value: string | Buffer | Uint8Array | number, offset?: number, end?: number
 | -------- | -------- | -------- | -------- |
 | value | string&nbsp;\|&nbsp;Buffer&nbsp;\|&nbsp;Uint8Array&nbsp;\|&nbsp;number | 是 | 用于填充的值。 |
 | offset | number | 否 | 起始偏移量。 默认值: 0。 |
-| end | number | 否 | 结束偏移量（不包括在内）。 默认值: buf.length。 |
+| end | number | 否 | 结束偏移量（不包含结束位置）。 默认值: 当前对象的字节长度。 |
 | encoding | [BufferEncoding](#bufferencoding) | 否 | 字符编码格式（`value`为string才有意义）。 默认值: 'utf-8'。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 填充后的Buffer实例。 |
+| Buffer | 返回一个填充后的Buffer对象。 |
 
 **错误码：**
 
@@ -671,7 +678,7 @@ console.log(b.toString());
 ```
 
 
-### includes
+## buffer.includes
 
 includes(value: string | number | Buffer | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): boolean
 
@@ -703,11 +710,11 @@ console.log(buf.includes('this').toString());	// 打印: true
 console.log(buf.includes('be').toString());	// 打印: false
 ```
 
-### indexOf
+## buffer.indexOf
 
 indexOf(value: string | number | Buffer | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number
 
-查找`this`实例中第一次出现`value`的索引，如果不包含`value`，则为-1
+查找当前对象中第一次出现`value`的索引，如果不包含`value`，则为-1。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -715,7 +722,7 @@ indexOf(value: string | number | Buffer | Uint8Array, byteOffset?: number, encod
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | string&nbsp;\|&nbsp;number&nbsp;\|&nbsp;Buffer&nbsp;\|&nbsp;Uint8Array | 是 | 要搜索的内容。 |
+| value | string&nbsp;\|&nbsp;number&nbsp;\|&nbsp;Buffer&nbsp;\|&nbsp;Uint8Array | 是 | 要查找的内容。 |
 | byteOffset | number | 否 | 字节偏移量。 如果为负数，则从末尾开始计算偏移量。 默认值: 0。 |
 | encoding | [BufferEncoding](#bufferencoding) | 否 | 字符编码格式。 默认值: 'utf-8'。 |
 
@@ -735,11 +742,11 @@ console.log(buf.indexOf('this').toString());	// 打印: 0
 console.log(buf.indexOf('is').toString());		// 打印: 2
 ```
 
-### keys
+## buffer.keys
 
 keys(): IterableIterator&lt;number&gt;
 
-返回一个包含key值的迭代器
+返回一个包含key值的迭代器。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -747,7 +754,7 @@ keys(): IterableIterator&lt;number&gt;
 
 | 类型 | 说明 |
 | -------- | -------- |
-|  IterableIterator&lt;number&gt; | 迭代器。 |
+|  IterableIterator&lt;number&gt; | 返回一个包含key值的迭代器。 |
 
 **示例：**
 
@@ -760,7 +767,7 @@ for (const key of buf.keys()) {
 }
 ```
 
-### lastIndexOf
+## buffer.lastIndexOf
 
 lastIndexOf(value: string | number | Buffer | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number
 
@@ -793,7 +800,7 @@ console.log(buf.lastIndexOf('buffer').toString());	// 打印: 17
 ```
 
 
-### readBigInt64BE
+## buffer.readBigInt64BE
 
 readBigInt64BE(offset?: number): bigint
 
@@ -834,7 +841,7 @@ let buf1 = buffer.allocUninitializedFromPool(8);
 buf1.writeBigInt64BE(0x0102030405060708n, 0);
 ```
 
-### readBigInt64LE
+## buffer.readBigInt64LE
 
 readBigInt64LE(offset?: number): bigint
 
@@ -875,7 +882,7 @@ let buf1 = buffer.allocUninitializedFromPool(8);
 buf1.writeBigInt64BE(0x0102030405060708n, 0);
 ```
 
-### readBigUInt64BE
+## buffer.readBigUInt64BE
 
 readBigUInt64BE(offset?: number): bigint
 
@@ -916,7 +923,7 @@ let buf1 = buffer.allocUninitializedFromPool(8);
 buf1.writeBigUInt64BE(0xdecafafecacefaden, 0);
 ```
 
-### readBigUInt64LE
+## buffer.readBigUInt64LE
 
 readBigUInt64LE(offset?: number): bigint
 
@@ -957,7 +964,7 @@ let buf1 = buffer.allocUninitializedFromPool(8);
 buf1.writeBigUInt64BE(0xdecafafecacefaden, 0);
 ```
 
-### readDoubleBE
+## buffer.readDoubleBE
 
 readDoubleBE(offset?: number): number
 
@@ -997,7 +1004,7 @@ let buf1 = buffer.allocUninitializedFromPool(8);
 buf1.writeDoubleBE(123.456, 0);
 ```
 
-### readDoubleLE
+## buffer.readDoubleLE
 
 readDoubleLE(offset?: number): number
 
@@ -1037,7 +1044,7 @@ let buf1 = buffer.allocUninitializedFromPool(8);
 buf1.writeDoubleLE(123.456, 0);
 ```
 
-### readFloatBE
+## buffer.readFloatBE
 
 readFloatBE(offset?: number): number
 
@@ -1077,7 +1084,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeFloatBE(0xcabcbcbc, 0);
 ```
 
-### readFloatLE
+## buffer.readFloatLE
 
 readFloatLE(offset?: number): number
 
@@ -1117,7 +1124,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeFloatLE(0xcabcbcbc, 0);
 ```
 
-### readInt8
+## buffer.readInt8
 
 readInt8(offset?: number): number
 
@@ -1158,7 +1165,7 @@ let buf1 = buffer.allocUninitializedFromPool(2);
 buf1.writeInt8(0x12);
 ```
 
-### readInt16BE
+## buffer.readInt16BE
 
 readInt16BE(offset?: number): number
 
@@ -1198,11 +1205,11 @@ let buf1 = buffer.alloc(2);
 buf1.writeInt16BE(0x1234, 0);
 ```
 
-### readInt16LE
+## buffer.readInt16LE
 
 readInt16LE(offset?: number): number
 
-从指定的`offset`处读取有符号的小端序16位整数
+从指定的`offset`处读取有符号的小端序16位整数。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1238,11 +1245,11 @@ let buf1 = buffer.alloc(2);
 buf1.writeInt16BE(0x1234, 0);
 ```
 
-### readInt32BE
+## buffer.readInt32BE
 
 readInt32BE(offset?: number): number
 
-从指定的`offset`处读取有符号的大端序32位整数
+从指定的`offset`处读取有符号的大端序32位整数。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1278,11 +1285,11 @@ let buf1 = buffer.alloc(4);
 buf1.writeInt32BE(0x12345678, 0);
 ```
 
-### readInt32LE
+## buffer.readInt32LE
 
 readInt32LE(offset?: number): number
 
-从指定的`offset`处读取有符号的小端序32位整数
+从指定的`offset`处读取有符号的小端序32位整数。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1318,7 +1325,7 @@ let buf1 = buffer.alloc(4);
 buf1.writeInt32BE(0x12345678, 0);
 ```
 
-### readIntBE
+## buffer.readIntBE
 
 readIntBE(offset: number, byteLength: number): number
 
@@ -1362,7 +1369,7 @@ buf1.writeIntBE(0x123456789011, 0, 6);
 ```
 
 
-### readIntLE
+## buffer.readIntLE
 
 readIntLE(offset: number, byteLength: number): number
 
@@ -1404,7 +1411,7 @@ let buf1 = buffer.allocUninitializedFromPool(6);
 buf1.writeIntLE(0x123456789011, 0, 6);
 ```
 
-### readUInt8
+## buffer.readUInt8
 
 readUInt8(offset?: number): number
 
@@ -1446,7 +1453,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUInt8(0x42);
 ```
 
-### readUInt16BE
+## buffer.readUInt16BE
 
 readUInt16BE(offset?: number): number
 
@@ -1488,7 +1495,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUInt16BE(0x1234, 0);
 ```
 
-### readUInt16LE
+## buffer.readUInt16LE
 
 readUInt16LE(offset?: number): number
 
@@ -1530,7 +1537,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUInt16LE(0x1234, 0);
 ```
 
-### readUInt32BE
+## buffer.readUInt32BE
 
 readUInt32BE(offset?: number): number
 
@@ -1571,7 +1578,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUInt32BE(0x12345678, 0);
 ```
 
-### readUInt32LE
+## buffer.readUInt32LE
 
 readUInt32LE(offset?: number): number
 
@@ -1612,7 +1619,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUInt32LE(0x12345678, 0);
 ```
 
-### readUIntBE
+## buffer.readUIntBE
 
 readUIntBE(offset: number, byteLength: number): number
 
@@ -1654,7 +1661,7 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUIntBE(0x13141516, 0, 4);
 ```
 
-### readUIntLE
+## buffer.readUIntLE
 
 readUIntLE(offset: number, byteLength: number): number
 
@@ -1696,11 +1703,11 @@ let buf1 = buffer.allocUninitializedFromPool(4);
 buf1.writeUIntLE(0x13141516, 0, 4);
 ```
 
-### subarray
+## buffer.subarray
 
 subarray(start?: number, end?: number): Buffer
 
-截取指定位置的`this`实例并返回。
+截取当前对象指定位置的数据并返回。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1709,13 +1716,13 @@ subarray(start?: number, end?: number): Buffer
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
 | start | number | 否 | 截取开始位置。 默认值: 0。 |
-| end | number | 否 |  截取结束位置（不包括在内）。 默认值: buf.length。 |
+| end | number | 否 |  截取结束位置（不包含结束位置）。 默认值: 当前对象的字节长度。 |
 
 **返回值：**
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 新的Buffer实例。 |
+| Buffer | 返回新的Buffer对象。 |
 
 **示例：**
 
@@ -1732,11 +1739,11 @@ console.log(buf2.toString('ascii', 0, buf2.length));
 // 打印: abc
 ```
 
-### swap16
+## buffer.swap16
 
 swap16(): Buffer
 
-将`this`实例解释为无符号的16位整数数组，并就地交换字节顺序。
+将当前对象解释为无符号的16位整数数组，并交换字节顺序。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1767,11 +1774,11 @@ buf1.swap16();
 console.log(buf1.toString('hex'));	// 打印: 0201040306050807
 ```
 
-### swap32
+## buffer.swap32
 
 swap32(): Buffer
 
-将`this`实例解释为无符号的32位整数数组，并就地交换字节顺序
+将当前对象解释为无符号的32位整数数组，并交换字节顺序。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1780,7 +1787,7 @@ swap32(): Buffer
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 交换之后的Buffer实例。 |
+| Buffer | 交换之后的Buffer对象。 |
 
 **错误码：**
 
@@ -1802,11 +1809,11 @@ buf1.swap32();
 console.log(buf1.toString('hex'));	// 打印: 0403020108070605
 ```
 
-### swap64
+## buffer.swap64
 
 swap64(): Buffer
 
-将`this`实例解释为无符号的64位整数数组，并就地交换字节顺序
+将当前对象解释为无符号的64位整数数组，并交换字节顺序。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1815,7 +1822,7 @@ swap64(): Buffer
 
 | 类型 | 说明 |
 | -------- | -------- |
-| Buffer | 交换之后的Buffer实例。 |
+| Buffer | 交换之后的Buffer对象。 |
 
 **错误码：**
 
@@ -1836,11 +1843,11 @@ buf1.swap64();
 console.log(buf1.toString('hex'));	// 打印: 0807060504030201
 ```
 
-### toJSON
+## buffer.toJSON
 
 toJSON(): Object
 
-将buf转为JSON并返回。
+将Buffer转为JSON并返回。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1862,11 +1869,11 @@ console.log(JSON.stringify(obj))
 // 打印: {"type":"Buffer","data":[1,2,3,4,5]}
 ```
 
-### toString
+## buffer.toString
 
 toString(encoding?: string, start?: number, end?: number): string
 
-将`this`实例中指定位置数据转成指定编码格式字符串并返回。
+将当前对象中指定位置数据转成指定编码格式字符串并返回。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1876,7 +1883,7 @@ toString(encoding?: string, start?: number, end?: number): string
 | -------- | -------- | -------- | -------- |
 | encoding | string | 否 | 字符编码格式。 默认值: 'utf-8'。 |
 | start  | number | 否 |  开始位置。 默认值: 0。 |
-| end  | number | 否 |  结束位置。 默认值: buf.length。 |
+| end  | number | 否 |  结束位置。 默认值: Buffer.length。 |
 
 **返回值：**
 
@@ -1897,7 +1904,7 @@ console.log(buf1.toString('utf-8'));
 // 打印: abcdefghijklmnopqrstuvwxyz
 ```
 
-### values
+## buffer.values
 
 values(): IterableIterator&lt;number&gt;
 
@@ -1922,11 +1929,11 @@ for (let value of buf1.values()) {
 }
 ```
 
-### write
+## buffer.write
 
 write(str: string, offset?: number, length?: number, encoding?: string): number
 
-从buf的offset偏移写入指定编码的字符串str,写入的字节长度为length
+从Buffer对象的offset偏移写入指定编码的字符串str，写入的字节长度为length。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1936,7 +1943,7 @@ write(str: string, offset?: number, length?: number, encoding?: string): number
 | -------- | -------- | -------- | -------- |
 | str | string | 是 | 要写入Buffer的字符串。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
-| length | number | 否 | 最大字节长度。 默认值: (buf.length - offset)。|
+| length | number | 否 | 最大字节长度。 默认值: (Buffer.length - offset)。|
 | encoding | string | 否 | 字符编码。 默认值: 'utf-8'。 |
 
 
@@ -1968,11 +1975,11 @@ let buffer1 = buffer.alloc(10);
 let length = buffer1.write('abcd', 8);
 ```
 
-### writeBigInt64BE
+## buffer.writeBigInt64BE
 
 writeBigInt64BE(value: bigint, offset?: number): number
 
-从buf的offset偏移写入有符号的大端序64位BigInt型数据value
+从Buffer对象的offset偏移写入有符号的大端序64位BigInt型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -1980,7 +1987,7 @@ writeBigInt64BE(value: bigint, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | bigint | 是 | 写入 buf 的数字。 |
+| value | bigint | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2007,11 +2014,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeBigInt64BE(0x0102030405060708n, 0);
 ```
 
-### writeBigInt64LE
+## buffer.writeBigInt64LE
 
 writeBigInt64LE(value: bigint, offset?: number): number
 
-从buf的offset偏移写入有符号的小端序64位BigInt型数据value
+从Buffer对象的offset偏移写入有符号的小端序64位BigInt型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2019,7 +2026,7 @@ writeBigInt64LE(value: bigint, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | bigint | 是 | 写入 buf 的数字。 |
+| value | bigint | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2046,11 +2053,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeBigInt64LE(0x0102030405060708n, 0);
 ```
 
-### writeBigUInt64BE
+## buffer.writeBigUInt64BE
 
 writeBigUInt64BE(value: bigint, offset?: number): number
 
-从buf的offset偏移写入无符号的大端序64位BigUInt型数据value
+从Buffer对象的offset偏移写入无符号的大端序64位BigUInt型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2058,7 +2065,7 @@ writeBigUInt64BE(value: bigint, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | bigint | 是 | 写入 buf 的数字。 |
+| value | bigint | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2085,11 +2092,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeBigUInt64BE(0xdecafafecacefaden, 0);
 ```
 
-### writeBigUInt64LE
+## buffer.writeBigUInt64LE
 
 writeBigUInt64LE(value: bigint, offset?: number): number
 
-从buf的offset偏移写入无符号的小端序64位BigUInt型数据value
+从Buffer对象的offset偏移写入无符号的小端序64位BigUInt型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2097,7 +2104,7 @@ writeBigUInt64LE(value: bigint, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | bigint | 是 | 写入 buf 的数字。 |
+| value | bigint | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2124,11 +2131,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeBigUInt64LE(0xdecafafecacefaden, 0);
 ```
 
-### writeDoubleBE
+## buffer.writeDoubleBE
 
 writeDoubleBE(value: number, offset?: number): number
 
-从buf的offset偏移写入大端序的64位双浮点型数据value
+从Buffer对象的offset偏移写入大端序的64位双浮点型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2136,7 +2143,7 @@ writeDoubleBE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2163,11 +2170,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeDoubleBE(123.456, 0);
 ```
 
-### writeDoubleLE
+## buffer.writeDoubleLE
 
 writeDoubleLE(value: number, offset?: number): number
 
-从buf的offset偏移写入小端序的64位双浮点型数据value
+从Buffer对象的offset偏移写入小端序的64位双浮点型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2175,7 +2182,7 @@ writeDoubleLE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2202,11 +2209,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeDoubleLE(123.456, 0);
 ```
 
-### writeFloatBE
+## buffer.writeFloatBE
 
 writeFloatBE(value: number, offset?: number): number
 
-从buf的offset偏移写入大端序的32位浮点型数据value
+从Buffer对象的offset偏移写入大端序的32位浮点型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2214,7 +2221,7 @@ writeFloatBE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2242,11 +2249,11 @@ buf.writeFloatBE(0xcafebabe, 0);
 ```
 
 
-### writeFloatLE
+## buffer.writeFloatLE
 
 writeFloatLE(value: number, offset?: number): number
 
-从buf的offset偏移写入小端序的32位浮点型数据value
+从Buffer对象的offset偏移写入小端序的32位浮点型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2254,7 +2261,7 @@ writeFloatLE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2281,11 +2288,11 @@ let buf = buffer.allocUninitializedFromPool(8);
 buf.writeFloatLE(0xcafebabe, 0);
 ```
 
-### writeInt8
+## buffer.writeInt8
 
 writeInt8(value: number, offset?: number): number
 
-从buf的offset偏移写入8位有符号整型数据value
+从Buffer对象的offset偏移写入8位有符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2293,7 +2300,7 @@ writeInt8(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2322,11 +2329,11 @@ buf.writeInt8(-2, 1);
 ```
 
 
-### writeInt16BE
+## buffer.writeInt16BE
 
 writeInt16BE(value: number, offset?: number): number
 
-从buf的offset偏移写入大端序的16位有符号整型数据value
+从Buffer对象的offset偏移写入大端序的16位有符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2334,7 +2341,7 @@ writeInt16BE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2362,11 +2369,11 @@ buf.writeInt16BE(0x0102, 0);
 ```
 
 
-### writeInt16LE
+## buffer.writeInt16LE
 
 writeInt16LE(value: number, offset?: number): number
 
-从buf的offset偏移写入小端序的16位有符号整型数据value
+从Buffer对象的offset偏移写入小端序的16位有符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2374,7 +2381,7 @@ writeInt16LE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2401,11 +2408,11 @@ let buf = buffer.allocUninitializedFromPool(2);
 buf.writeInt16LE(0x0304, 0);
 ```
 
-### writeInt32BE
+## buffer.writeInt32BE
 
 writeInt32BE(value: number, offset?: number): number
 
-从buf的offset偏移写入大端序的32位有符号整型数据value
+从Buffer对象的offset偏移写入大端序的32位有符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2413,7 +2420,7 @@ writeInt32BE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2441,11 +2448,11 @@ buf.writeInt32BE(0x01020304, 0);
 ```
 
 
-### writeInt32LE
+## buffer.writeInt32LE
 
 writeInt32LE(value: number, offset?: number): number
 
-从buf的offset偏移写入小端序的32位有符号整型数据value
+从Buffer对象的offset偏移写入小端序的32位有符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2453,7 +2460,7 @@ writeInt32LE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2480,11 +2487,11 @@ let buf = buffer.allocUninitializedFromPool(4);
 buf.writeInt32LE(0x05060708, 0);
 ```
 
-### writeIntBE
+## buffer.writeIntBE
 
 writeIntBE(value: number, offset: number, byteLength: number): number
 
-从buf的offset偏移写入大端序的有符号value数据,value字节长度为byteLength
+从Buffer对象的offset偏移写入大端序的有符号value数据，value字节长度为byteLength。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2492,7 +2499,7 @@ writeIntBE(value: number, offset: number, byteLength: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 是 | 偏移量。 默认值: 0。 |
 | byteLength | number | 是 | 要写入的字节数。 |
 
@@ -2521,11 +2528,11 @@ buf.writeIntBE(0x1234567890ab, 0, 6);
 ```
 
 
-### writeIntLE
+## buffer.writeIntLE
 
 writeIntLE(value: number, offset: number, byteLength: number): number
 
-从buf的offset偏移写入小端序的有符号value数据,value字节长度为byteLength
+从Buffer对象的offset偏移写入小端序的有符号value数据，value字节长度为byteLength。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2533,7 +2540,7 @@ writeIntLE(value: number, offset: number, byteLength: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 是 | 偏移量。 默认值: 0。 |
 | byteLength | number | 是 | 要写入的字节数。 |
 
@@ -2561,11 +2568,11 @@ let buf = buffer.allocUninitializedFromPool(6);
 buf.writeIntLE(0x1234567890ab, 0, 6);
 ```
 
-### writeUInt8
+## buffer.writeUInt8
 
 writeUInt8(value: number, offset?: number): number
 
-从buf的offset偏移写入8位无符号整型数据value
+从Buffer对象的offset偏移写入8位无符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2573,7 +2580,7 @@ writeUInt8(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2603,11 +2610,11 @@ buf.writeUInt8(0x23, 2);
 buf.writeUInt8(0x42, 3);
 ```
 
-### writeUInt16BE
+## buffer.writeUInt16BE
 
 writeUInt16BE(value: number, offset?: number): number
 
-从buf的offset偏移写入大端序的16位无符号整型数据value
+从Buffer对象的offset偏移写入大端序的16位无符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2615,7 +2622,7 @@ writeUInt16BE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2643,11 +2650,11 @@ buf.writeUInt16BE(0xdead, 0);
 buf.writeUInt16BE(0xbeef, 2);
 ```
 
-### writeUInt16LE
+## buffer.writeUInt16LE
 
 writeUInt16LE(value: number, offset?: number): number
 
-从buf的offset偏移写入小端序的16位无符号整型数据value
+从Buffer对象的offset偏移写入小端序的16位无符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2655,7 +2662,7 @@ writeUInt16LE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2683,11 +2690,11 @@ buf.writeUInt16LE(0xdead, 0);
 buf.writeUInt16LE(0xbeef, 2);
 ```
 
-### writeUInt32BE
+## buffer.writeUInt32BE
 
 writeUInt32BE(value: number, offset?: number): number
 
-从buf的offset偏移写入大端序的32位无符号整型数据value
+从Buffer对象的offset偏移写入大端序的32位无符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2695,7 +2702,7 @@ writeUInt32BE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数据。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2722,11 +2729,11 @@ let buf = buffer.allocUninitializedFromPool(4);
 buf.writeUInt32BE(0xfeedface, 0);
 ```
 
-### writeUInt32LE
+## buffer.writeUInt32LE
 
 writeUInt32LE(value: number, offset?: number): number
 
-从buf的offset偏移写入小端序的32位无符号整型数据value
+从Buffer对象的offset偏移写入小端序的32位无符号整型数据value。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2734,7 +2741,7 @@ writeUInt32LE(value: number, offset?: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数字。 |
+| value | number | 是 | 写入Buffer对象的数字。 |
 | offset | number | 否 | 偏移量。 默认值: 0。 |
 
 
@@ -2761,11 +2768,11 @@ let buf = buffer.allocUninitializedFromPool(4);
 buf.writeUInt32LE(0xfeedface, 0);
 ```
 
-### writeUIntBE
+## buffer.writeUIntBE
 
 writeUIntBE(value: number, offset: number, byteLength: number): number
 
-从buf的offset偏移写入大端序的无符号value数据,value字节长度为byteLength
+从Buffer对象的offset偏移写入大端序的无符号value数据，value字节长度为byteLength。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2773,7 +2780,7 @@ writeUIntBE(value: number, offset: number, byteLength: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数据。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 是 | 偏移量。 默认值: 0。 |
 | byteLength | number | 是 | 要写入的字节数。 |
 
@@ -2801,11 +2808,11 @@ let buf = buffer.allocUninitializedFromPool(6);
 buf.writeUIntBE(0x1234567890ab, 0, 6);
 ```
 
-### writeUIntLE
+## buffer.writeUIntLE
 
 writeUIntLE(value: number, offset: number, byteLength: number): number
 
-从buf的offset偏移写入小端序的无符号value数据,value字节长度为byteLength
+从Buffer对象的offset偏移写入小端序的无符号value数据，value字节长度为byteLength。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2813,7 +2820,7 @@ writeUIntLE(value: number, offset: number, byteLength: number): number
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
-| value | number | 是 | 写入 buf 的数据。 |
+| value | number | 是 | 写入Buffer的数据。 |
 | offset | number | 是 | 偏移量。 默认值: 0。 |
 | byteLength | number | 是 | 要写入的字节数。 |
 
@@ -2841,11 +2848,11 @@ let buf = buffer.allocUninitializedFromPool(6);
 buf.writeUIntLE(0x1234567890ab, 0, 6);
 ```
 
-### transcode
+## buffer.transcode
 
 transcode(source: Buffer | Uint8Array, fromEnc: string, toEnc: string): Buffer
 
-将给定的Buffer或Uint8Array实例从一种字符编码重新编码为另一种
+将给定的Buffer或Uint8Array对象从一种字符编码重新编码为另一种。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2919,7 +2926,7 @@ arrayBuffer(): Promise&lt;ArrayBuffer&gt;
 **返回值：**
 | 类型 | 说明 |
 | -------- | -------- |
-| Promise&lt;ArrayBuffer&gt; | 返回包含Blob数据的ArrayBuffer的Promise。 |
+| Promise&lt;ArrayBuffer&gt; | Promise对象，返回包含Blob数据的ArrayBuffer。 |
 
 **示例：**
 ```ts
@@ -2934,7 +2941,7 @@ pro.then(val => {
 
 slice(start?: number, end?: number, type?: string): Blob
 
-创建并返回一个复制原blob对象中start到end位置数据的新blob实例对象。
+创建并返回一个复制原Blob对象中指定数据长度的Blob新对象。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -2962,14 +2969,14 @@ let blob3 = blob.slice(0, 2, "MIME");
 
 text(): Promise&lt;string&gt;
 
-返回一个Promise，该Promise中的值为UTF8编码类型的文本。
+使用UTF8进行解码并返回一个文本。使用Promise异步回调。
 
 **系统能力：** SystemCapability.Utils.Lang
 
 **返回值：**
 | 类型 | 说明 |
 | -------- | -------- |
-| Promise&lt;string&gt; | 包含以UTF8编码的文本的Promise。 |
+| Promise&lt;string&gt; | Promise对象，返回包含以UTF8解码的文本。 |
 
 **示例：**
 ```ts
diff --git a/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md b/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
index 912fbf127bff109c6b29d84c8b658509d4921959..ede65b4423d427eeab3615a47c90b97f86d6e186 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-lightweightmap.md
@@ -275,7 +275,7 @@ let result = lightWeightMap.get("sparrow");
 
 getIndexOfKey(key: K): number
 
-查找指定元素第一次出现的下标值，如果没有找到该元素返回-1。
+查找key元素第一次出现的下标值，如果没有找到该元素返回-1。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -289,7 +289,7 @@ getIndexOfKey(key: K): number
 
 | 类型 | 说明 |
 | -------- | -------- |
-| number | 返回指定元素第一次出现时的下标值，查找失败返回-1。 |
+| number | 返回key元素第一次出现时的下标值，查找失败返回-1。 |
 
 **错误码：**
 
@@ -313,7 +313,7 @@ let result = lightWeightMap.getIndexOfKey("sparrow");
 
 getIndexOfValue(value: V): number
 
-查找指定元素第一次出现的下标值，如果没有找到该元素返回-1。
+查找value元素第一次出现的下标值，如果没有找到该元素返回-1。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -327,7 +327,7 @@ getIndexOfValue(value: V): number
 
 | 类型 | 说明 |
 | -------- | -------- |
-| number | 返回指定元素第一次出现时的下标值，查找失败返回-1。 |
+| number | 返回value元素第一次出现时的下标值，查找失败返回-1。 |
 
 **错误码：**
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md b/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
index f216067bbc4604d56abf7c4b757dad6b19df3fbf..7a9eaabb026f8513589b8d5854ebc4cc06522c1b 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-lightweightset.md
@@ -1,4 +1,4 @@
-# @ohos.util.LightWeightSet (非线性容器LightWeightSet)@ohos.util.LightWeightSet (非线性容器LightWeightSet) 
+# @ohos.util.LightWeightSet (非线性容器LightWeightSet)
 
 > **说明：**
 > 本模块首批接口从API version 8开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。
diff --git a/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md b/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md
index fd09fcdb427fab0839e3b7aa5ad976f26d1dc885..b6c47634264863083e9a81d534c526b638fa1411 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-linkedlist.md
@@ -7,7 +7,7 @@ LinkedList底层通过双向链表实现，双向链表的每个节点都包含
 
 LinkedList和[List](js-apis-list.md)相比，LinkedList是双向链表，可以快速地在头尾进行增删，而List是单向链表，无法双向操作。
 
-LinkedList和[ArrayList](js-apis-arraylist.md)相比，存取数据的效率不如ArrayList。
+LinkedList和[ArrayList](js-apis-arraylist.md)相比，插入数据效率LinkedList优于ArrayList，而查询效率ArrayList优于LinkedList。
 
 **推荐使用场景：** 当需要频繁的插入删除时，推荐使用LinkedList高效操作。
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-list.md b/zh-cn/application-dev/reference/apis/js-apis-list.md
index c7847c749b6da20bfa7b345a4c64d89e7d7a15df..60535897fdd5b43b9b79e641a6ed67f53a307a29 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-list.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-list.md
@@ -15,7 +15,7 @@ List和[LinkedList](js-apis-linkedlist.md)相比，LinkedList是双向链表，
 ## 导入模块
 
 ```ts
-import List from '@ohos.util.List';  
+import List from '@ohos.util.List';
 ```
 
 
@@ -546,8 +546,8 @@ list.add(2);
 list.add(4);
 list.add(5);
 list.add(4);
-list.sort((a: number, b: number) => a - b);
-list.sort((a: number, b: number) => b - a);
+list.sort((a: number, b: number) => a - b); // 结果为升序排列
+list.sort((a: number, b: number) => b - a); // 结果为降序排列
 ```
 
 ### getSubList
diff --git a/zh-cn/application-dev/reference/apis/js-apis-plainarray.md b/zh-cn/application-dev/reference/apis/js-apis-plainarray.md
index 9aa58d239b0f5945356f76f12908b71ba120874c..61eaf7a1f035fabaccf9e265360dc8dc4010c838 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-plainarray.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-plainarray.md
@@ -242,7 +242,7 @@ let result = plainArray.getIndexOfValue("squirrel");
 
 getKeyAt(index: number): number
 
-查找指定下标的元素键值对中key值。
+查找指定下标元素键值对中的key值。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -256,7 +256,7 @@ getKeyAt(index: number): number
 
 | 类型 | 说明 |
 | -------- | -------- |
-| number | 返回该下标对应的元素键值对中key值，失败返回-1。 |
+| number | 返回该下标元素键值对中的key值，失败返回-1。 |
 
 **错误码：**
 
@@ -279,7 +279,7 @@ let result = plainArray.getKeyAt(1);
 
 getValueAt(index: number): T
 
-查找指定下标元素键值对中Value值，否则返回undefined。
+查找指定下标元素键值对中的Value值，失败返回undefined。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -293,7 +293,7 @@ getValueAt(index: number): T
 
   | 类型 | 说明 |
   | -------- | -------- |
-  | T | 返回该下标对应的元素键值对中key值，失败返回undefined。 |
+  | T | 返回该下标元素键值对中的value值，失败返回undefined。 |
 
   **错误码：**
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-url.md b/zh-cn/application-dev/reference/apis/js-apis-url.md
index 2f68cab7daf22be323fc4e5de84b79cbda01639b..48056ef989dfae421c48212a75259ef49172e36d 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-url.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-url.md
@@ -78,8 +78,8 @@ delete(name: string): void
 
 ```js
 let urlObject = new Url.URL('https://developer.exampleUrl/?fod=1&bard=2');
-let paramsobject = new Url.URLParams(urlObject.search.slice(1));
-paramsobject.delete('fod');
+let paramsObject = new Url.URLParams(urlObject.search.slice(1));
+paramsObject.delete('fod');
 ```
 
 
@@ -87,7 +87,7 @@ paramsobject.delete('fod');
 
 getAll(name: string): string[]
 
-获取指定名称的所有键值对。
+获取指定名称的所有键对应值的集合。
 
 **系统能力：** SystemCapability.Utils.Lang
 
@@ -101,7 +101,7 @@ getAll(name: string): string[]
 
 | 类型 | 说明 |
 | -------- | -------- |
-| string[] | 返回指定名称的所有键值对。 |
+| string[] | 返回指定名称的所有键对应值的集合。 |
 
 **示例：**
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-usb.md b/zh-cn/application-dev/reference/apis/js-apis-usb.md
index d0331a03cdd608b1dd7bd467af0ff552e9e51ab5..827b7fb62a07a5ac57bda59fb2b8ef51e4936693 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-usb.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-usb.md
@@ -585,7 +585,7 @@ let ret = usb.usbFunctionsToString(funcs);
 
 ## usb.setCurrentFunctions
 
-setCurrentFunctions(funcs: FunctionType): Promise\<boolean\>
+setCurrentFunctions(funcs: FunctionType): Promise\<void\>
 
 在设备模式下，设置当前的USB功能列表。
 
@@ -601,15 +601,19 @@ setCurrentFunctions(funcs: FunctionType): Promise\<boolean\>
 
 **返回值：**
 
-| 类型               | 说明                                                         |
-| ------------------ | ------------------------------------------------------------ |
-| Promise\<boolean\> | Promise对象，返回设置成功与否的结果。true表示设置成功，false表示设置失败。 |
+| 类型            | 说明          |
+| --------------- | ------------- |
+| Promise\<void\> | Promise对象。 |
 
 **示例：**
 
 ```js
 let funcs = HDC;
-let ret = usb.setCurrentFunctions(funcs);
+usb.setCurrentFunctions(funcs).then(() => {
+    console.info('usb setCurrentFunctions successfully.');
+}).catch(err => {
+    console.error('usb setCurrentFunctions failed: ' + err.code + ' message: ' + err.message);
+});
 ```
 
 ## usb.getCurrentFunctions
@@ -686,7 +690,7 @@ let ret = usb.getSupportedModes(0);
 
 ## usb.setPortRoles
 
-setPortRoles(portId: number, powerRole: PowerRoleType, dataRole: DataRoleType): Promise\<boolean\>
+setPortRoles(portId: number, powerRole: PowerRoleType, dataRole: DataRoleType): Promise\<void\>
 
 设置指定的端口支持的角色模式，包含充电角色、数据传输角色。
 
@@ -704,14 +708,19 @@ setPortRoles(portId: number, powerRole: PowerRoleType, dataRole: DataRoleType):
 
 **返回值：**
 
-| 类型               | 说明                                                         |
-| ------------------ | ------------------------------------------------------------ |
-| Promise\<boolean\> | Promise对象，返回设置成功与否的结果。true表示设置成功，false表示设置失败。 |
+| 类型            | 说明          |
+| --------------- | ------------- |
+| Promise\<void\> | Promise对象。 |
 
 **示例：**
 
 ```js
-let ret = usb.getSupportedModes(0);
+let portId = 1;
+usb.usb.setPortRoles(portId, usb.PowerRoleType.SOURCE, usb.DataRoleType.HOST).then(() => {
+    console.info('usb setPortRoles successfully.');
+}).catch(err => {
+    console.error('usb setPortRoles failed: ' + err.code + ' message: ' + err.message);
+});
 ```
 
 ## USBEndpoint
diff --git a/zh-cn/application-dev/reference/apis/js-apis-wantAgent.md b/zh-cn/application-dev/reference/apis/js-apis-wantAgent.md
index 7a67ad66eb81f3aca814479cbe1c3d2482f06295..0ffb8c8275efcce862ca1ae1054d9233bf26a697 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-wantAgent.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-wantAgent.md
@@ -24,7 +24,7 @@ getWantAgent(info: WantAgentInfo, callback: AsyncCallback\<WantAgent\>): void
 
 | 参数名     | 类型                       | 必填 | 说明                    |
 | -------- | -------------------------- | ---- | ----------------------- |
-| info     | WantAgentInfo              | 是   | WantAgent信息。           |
+| info     | [WantAgentInfo](js-apis-inner-wantAgent-wantAgentInfo.md)              | 是   | WantAgent信息。           |
 | callback | AsyncCallback\<WantAgent\> | 是   | 创建WantAgent的回调方法。 |
 
 **示例：**
@@ -34,27 +34,31 @@ import WantAgent from '@ohos.wantAgent';
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
+    if (err.code) {
+        console.info('getWantAgent Callback err:' + JSON.stringify(err))
+    } else { 
+        console.info('getWantAgent Callback success')
+    }
 }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -64,7 +68,7 @@ var wantAgentInfo = {
     wantAgentFlags:[WantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
 }
 
-WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
+WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback);
 ```
 
 
@@ -81,7 +85,7 @@ getWantAgent(info: WantAgentInfo): Promise\<WantAgent\>
 
 | 参数名 | 类型          | 必填 | 说明          |
 | ---- | ------------- | ---- | ------------- |
-| info | WantAgentInfo | 是   | WantAgent信息。 |
+| info | [WantAgentInfo](js-apis-inner-wantAgent-wantAgentInfo.md) | 是   | WantAgent信息。 |
 
 **返回值：**
 
@@ -96,24 +100,24 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -124,7 +128,7 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
 });
 ```
 
@@ -152,11 +156,11 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     if (err.code == 0) {
     	wantAgent = data;
     } else {
@@ -164,24 +168,24 @@ function getWantAgentCallback(err, data) {
     }
 }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -195,9 +199,9 @@ WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
 
 //getBundleName回调
 function getBundleNameCallback(err, data) {
-	console.info("==========================>getBundleNameCallback=======================>");
+	console.info('==========================>getBundleNameCallback=======================>');
 }
-WantAgent.getBundleName(wantAgent, getBundleNameCallback)
+WantAgent.getBundleName(wantAgent, getBundleNameCallback);
 ```
 
 
@@ -228,27 +232,27 @@ getBundleName(agent: WantAgent): Promise\<string\>
 import WantAgent from '@ohos.wantAgent';
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -259,12 +263,12 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     wantAgent = data;
 });
 
 WantAgent.getBundleName(wantAgent).then((data) => {
-	console.info("==========================>getBundleNameCallback=======================>");
+	console.info('==========================>getBundleNameCallback=======================>');
 });
 ```
 
@@ -292,11 +296,11 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     if (err.code == 0) {
     	wantAgent = data;
     } else {
@@ -304,24 +308,24 @@ function getWantAgentCallback(err, data) {
     }
 }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -335,9 +339,9 @@ WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
 
 //getUid回调
 function getUidCallback(err, data) {
-	console.info("==========================>getUidCallback=======================>");
+	console.info('==========================>getUidCallback=======================>');
 }
-WantAgent.getUid(wantAgent, getUidCallback)
+WantAgent.getUid(wantAgent, getUidCallback);
 ```
 
 
@@ -369,27 +373,27 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -400,162 +404,16 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     wantAgent = data;
 });
 
 WantAgent.getUid(wantAgent).then((data) => {
-	console.info("==========================>getUidCallback=======================>");
+	console.info('==========================>getUidCallback=======================>');
 });
 ```
 
 
-
-## WantAgent.getWant
-
-getWant(agent: WantAgent, callback: AsyncCallback\<Want\>): void
-
-获取WantAgent对象的want（callback形式）。
-
-**系统能力**：SystemCapability.Ability.AbilityRuntime.Core
-
-**系统API**: 此接口为系统接口，三方应用不支持调用。
-
-**参数：**
-
-| 参数名     | 类型                  | 必填 | 说明                            |
-| -------- | --------------------- | ---- | ------------------------------- |
-| agent    | WantAgent             | 是   | WantAgent对象。                   |
-| callback | AsyncCallback\<Want\> | 是   | 获取WantAgent对象want的回调方法。 |
-
-**示例：**
-
-```ts
-import WantAgent from '@ohos.wantAgent';
-
-
-//wantAgent对象
-var wantAgent;
-
-//getWantAgent回调
-function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
-    if (err.code == 0) {
-    	wantAgent = data;
-    } else {
-        console.info('----getWantAgent failed!----');
-    }
-}
-//WantAgentInfo对象
-var wantAgentInfo = {
-    wants: [
-        {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
-            parameters:
-            {
-                mykey0: 2222,
-                mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
-                mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
-                mykey6: true,
-            }
-        }
-    ],
-    operationType: WantAgent.OperationType.START_ABILITIES,
-    requestCode: 0,
-    wantAgentFlags:[WantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
-}
-
-WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
-
-//getWant回调
-function getWantCallback(err, data) {
-	console.info("==========================>getWantCallback=======================>");
-}
-WantAgent.getWant(wantAgent, getWantCallback)
-```
-
-
-
-## WantAgent.getWant
-
-getWant(agent: WantAgent): Promise\<Want\>
-
-获取WantAgent对象的want（Promise形式）。
-
-**系统能力**：SystemCapability.Ability.AbilityRuntime.Core
-
-**系统API**: 此接口为系统接口，三方应用不支持调用。
-
-**参数：**
-
-| 参数名  | 类型      | 必填 | 说明          |
-| ----- | --------- | ---- | ------------- |
-| agent | WantAgent | 是   | WantAgent对象。 |
-
-**返回值：**
-
-| 类型                                                        | 说明                                                         |
-| ----------------------------------------------------------- | ------------------------------------------------------------ |
-| Promise\<Want\> | 以Promise形式返回获取WantAgent对象的want。 |
-
-**示例：**
-
-```ts
-import WantAgent from '@ohos.wantAgent';
-
-
-//wantAgent对象
-var wantAgent;
-
-//WantAgentInfo对象
-var wantAgentInfo = {
-    wants: [
-        {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
-            parameters:
-            {
-                mykey0: 2222,
-                mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
-                mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
-                mykey6: true,
-            }
-        }
-    ],
-    operationType: WantAgent.OperationType.START_ABILITIES,
-    requestCode: 0,
-    wantAgentFlags:[WantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
-}
-
-WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
-    wantAgent = data;
-});
-
-WantAgent.getWant(wantAgent).then((data) => {
-	console.info("==========================>getWantCallback=======================>");
-});
-```
-
-
-
 ## WantAgent.cancel
 
 cancel(agent: WantAgent, callback: AsyncCallback\<void\>): void
@@ -578,11 +436,11 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     if (err.code == 0) {
     	wantAgent = data;
     } else {
@@ -590,24 +448,24 @@ function getWantAgentCallback(err, data) {
     }
 }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -621,9 +479,9 @@ WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
 
 //cancel回调
 function cancelCallback(err, data) {
-	console.info("==========================>cancelCallback=======================>");
+	console.info('==========================>cancelCallback=======================>');
 }
-WantAgent.cancel(wantAgent, cancelCallback)
+WantAgent.cancel(wantAgent, cancelCallback);
 ```
 
 
@@ -655,27 +513,27 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -686,12 +544,12 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     wantAgent = data;
 });
 
 WantAgent.cancel(wantAgent).then((data) => {
-	console.info("==========================>cancelCallback=======================>");
+	console.info('==========================>cancelCallback=======================>');
 });
 ```
 
@@ -720,11 +578,11 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     if (err.code == 0) {
     	wantAgent = data;
     } else {
@@ -732,24 +590,24 @@ function getWantAgentCallback(err, data) {
     }
 }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -763,7 +621,7 @@ WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
 
 //trigger回调
 function triggerCallback(data) {
-	console.info("==========================>triggerCallback=======================>");
+	console.info('==========================>triggerCallback=======================>');
 }
 
 var triggerInfo = {
@@ -778,7 +636,7 @@ WantAgent.trigger(wantAgent, triggerInfo, triggerCallback)
 
 equal(agent: WantAgent, otherAgent: WantAgent, callback: AsyncCallback\<boolean\>): void
 
-判断两个WantAgent实例是否相等（callback形式）。
+判断两个WantAgent实例是否相等（callback形式）,以此来判断是否是来自同一应用的相同操作。
 
 **系统能力**：SystemCapability.Ability.AbilityRuntime.Core
 
@@ -797,12 +655,12 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent1;
-var wantAgent2;
+let wantAgent1;
+let wantAgent2;
 
 //getWantAgent回调
 function getWantAgentCallback(err, data) {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     if (err.code == 0) {
     	wantAgent1 = data;
         wantAgent2 = data;
@@ -811,24 +669,24 @@ function getWantAgentCallback(err, data) {
     }
 }
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -842,7 +700,7 @@ WantAgent.getWantAgent(wantAgentInfo, getWantAgentCallback)
 
 //equal回调
 function equalCallback(err, data) {
-	console.info("==========================>equalCallback=======================>");
+	console.info('==========================>equalCallback=======================>');
 }
 WantAgent.equal(wantAgent1, wantAgent2, equalCallback)
 ```
@@ -853,7 +711,7 @@ WantAgent.equal(wantAgent1, wantAgent2, equalCallback)
 
 equal(agent: WantAgent, otherAgent: WantAgent): Promise\<boolean\>
 
-判断两个WantAgent实例是否相等（Promise形式）。
+判断两个WantAgent实例是否相等（Promise形式）,以此来判断是否是来自同一应用的相同操作。
 
 **系统能力**：SystemCapability.Ability.AbilityRuntime.Core
 
@@ -877,28 +735,28 @@ import WantAgent from '@ohos.wantAgent';
 
 
 //wantAgent对象
-var wantAgent1;
-var wantAgent2;
+let wantAgent1;
+let wantAgent2;
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -909,13 +767,13 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     wantAgent1 = data;
     wantAgent2 = data;
 });
 
 WantAgent.equal(wantAgent1, wantAgent2).then((data) => {
-	console.info("==========================>equalCallback=======================>");
+	console.info('==========================>equalCallback=======================>');
 });
 ```
 
@@ -940,27 +798,27 @@ getOperationType(agent: WantAgent, callback: AsyncCallback\<number>): void;
 import WantAgent from '@ohos.wantAgent';
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -971,7 +829,7 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     wantAgent = data;
 });
 
@@ -1006,27 +864,27 @@ getOperationType(agent: WantAgent): Promise\<number>;
 import WantAgent from '@ohos.wantAgent';
 
 //wantAgent对象
-var wantAgent;
+let wantAgent;
 
 //WantAgentInfo对象
-var wantAgentInfo = {
+let wantAgentInfo = {
     wants: [
         {
-            deviceId: "deviceId",
-            bundleName: "com.neu.setResultOnAbilityResultTest1",
-            abilityName: "com.example.test.MainAbility",
-            action: "action1",
-            entities: ["entity1"],
-            type: "MIMETYPE",
-            uri: "key={true,true,false}",
+            deviceId: 'deviceId',
+            bundleName: 'com.neu.setResultOnAbilityResultTest1',
+            abilityName: 'com.example.test.MainAbility',
+            action: 'action1',
+            entities: ['entity1'],
+            type: 'MIMETYPE',
+            uri: 'key={true,true,false}',
             parameters:
             {
                 mykey0: 2222,
                 mykey1: [1, 2, 3],
-                mykey2: "[1, 2, 3]",
-                mykey3: "ssssssssssssssssssssssssss",
+                mykey2: '[1, 2, 3]',
+                mykey3: 'ssssssssssssssssssssssssss',
                 mykey4: [false, true, false],
-                mykey5: ["qqqqq", "wwwwww", "aaaaaaaaaaaaaaaaa"],
+                mykey5: ['qqqqq', 'wwwwww', 'aaaaaaaaaaaaaaaaa'],
                 mykey6: true,
             }
         }
@@ -1037,15 +895,14 @@ var wantAgentInfo = {
 }
 
 WantAgent.getWantAgent(wantAgentInfo).then((data) => {
-	console.info("==========================>getWantAgentCallback=======================>");
+	console.info('==========================>getWantAgentCallback=======================>');
     wantAgent = data;
+    WantAgent.getOperationType(wantAgent).then((OperationType) => {
+        console.log('getOperationType success, OperationType: ' + OperationType);
+    }).catch((err) => {
+        console.log('getOperationType fail, err: ' + err);
+    })
 });
-
-WantAgent.getOperationType(wantAgent).then((OperationType) => {
-    console.log('getOperationType success, OperationType: ' + OperationType);
-}).catch((err) => {
-    console.log('getOperationType fail, err: ' + err);
-})
 ```
 
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-webview.md b/zh-cn/application-dev/reference/apis/js-apis-webview.md
index 2372ea9e8cbaa3ee36aa0830469108baa05b5d1b..7e1a36239c54761debd6cff1d95a3d2390a8e14a 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-webview.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-webview.md
@@ -19,6 +19,46 @@
 ```ts
 import web_webview from '@ohos.web.webview';
 ```
+
+### once
+
+once(type: string, callback: Callback\<void\>): void
+
+订阅一次指定类型Web事件的回调。
+
+**系统能力：** SystemCapability.Web.Webview.Core
+
+**参数：**
+
+| 参数名  | 类型              | 必填 | 说明                  |
+| ------- | ---------------- | ---- | -------------------- |
+| type     | string          | 是   | Web事件的类型，目前支持："webInited"（Web初始化完成）。      |
+| headers | Callback\<void\> | 是   | 所订阅的回调函数。 |
+
+**示例：**
+
+```ts
+// xxx.ets
+import web_webview from '@ohos.web.webview'
+
+web_webview.once("webInited", () => {
+  console.log("setCookie")
+  web_webview.WebCookieManager.setCookie("www.example.com", "a=b")
+})
+
+@Entry
+@Component
+struct WebComponent {
+  controller: web_webview.WebviewController = new web_webview.WebviewController();
+
+  build() {
+    Column() {
+      Web({ src: 'www.example.com', controller: this.controller })
+    }
+  }
+}
+```
+
 ## WebMessagePort
 
 通过WebMessagePort可以进行消息的发送以及接收。
@@ -2699,6 +2739,55 @@ struct WebComponent {
 }
 ```
 
+### customizeSchemes
+
+static customizeSchemes(schemes: Array\<WebCustomScheme\>): void
+
+配置Web自定义协议请求的权限。建议在任何Web组件初始化之前进行调用。
+
+**系统能力：** SystemCapability.Web.Webview.Core
+
+**参数：**
+
+| 参数名   | 类型    | 必填 | 说明                      |
+| -------- | ------- | ---- | -------------------------------------- |
+| schemes | Array\<[WebCustomScheme](#webcustomscheme)\> | 是   | 自定义协议配置，最多支持同时配置10个自定义协议。 |
+
+**示例：**
+
+```ts
+// xxx.ets
+import web_webview from '@ohos.web.webview';
+
+@Entry
+@Component
+struct WebComponent {
+  controller: web_webview.WebviewController = new web_webview.WebviewController();
+  responseweb: WebResourceResponse = new WebResourceResponse()
+  scheme1: web_webview.WebCustomScheme = {schemeName: "name1", isSupportCORS: true, isSupportFetch: true}
+  scheme2: web_webview.WebCustomScheme = {schemeName: "name2", isSupportCORS: true, isSupportFetch: true}
+  scheme3: web_webview.WebCustomScheme = {schemeName: "name3", isSupportCORS: true, isSupportFetch: true}
+
+  aboutToAppear():void {
+    try {
+      web_webview.WebviewController.customizeSchemes([this.scheme1, this.scheme2, this.scheme3])
+    } catch(error) {
+      console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
+    }
+  }
+
+  build() {
+    Column() {
+      Web({ src: 'www.example.com', controller: this.controller })
+        .onInterceptRequest((event) => {
+          console.log('url:' + event.request.getRequestUrl())
+          return this.responseweb
+        })
+    }
+  }
+}
+```
+
 ## WebCookieManager
 
 通过WebCookie可以控制Web组件中的cookie的各种行为，其中每个应用中的所有web组件共享一个WebCookieManager实例。
@@ -4412,4 +4501,16 @@ struct WebComponent {
 | historyRawUrl | string                                 | 是   | 否   | 历史记录项的原始url地址。    |
 | title         | string                                 | 是   | 否   | 历史记录项的标题。           |
 
+## WebCustomScheme
+
+自定义协议配置。
+
+**系统能力：** SystemCapability.Web.Webview.Core
+
+| 名称           | 类型       | 可读 | 可写 | 说明                         |
+| -------------- | --------- | ---- | ---- | ---------------------------- |
+| schemeName     | string    | 是   | 是   | 自定义协议名称。最大长度为32，其字符仅支持小写字母、数字、'.'、'+'、'-'。        |
+| isSupportCORS  | boolean   | 是   | 是   | 是否支持跨域请求。    |
+| isSupportFetch | boolean   | 是   | 是   | 是否支持fetch请求。           |
+
 ### 
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/arkui-ts/ts-basic-components-web.md b/zh-cn/application-dev/reference/arkui-ts/ts-basic-components-web.md
index 7863ff594efa322268d7b14937fa254c19abb6d9..474217f8666c877f11d13ec3a318cef24215ca15 100755
--- a/zh-cn/application-dev/reference/arkui-ts/ts-basic-components-web.md
+++ b/zh-cn/application-dev/reference/arkui-ts/ts-basic-components-web.md
@@ -1117,6 +1117,70 @@ webCursiveFont(family: string)
   }
   ```
 
+### darkMode<sup>9+</sup>
+
+darkMode(mode: WebDarkMode)
+
+设置Web深色模式，默认关闭。当深色模式开启时，Web将启用媒体查询prefer-color-scheme中网页所定义的深色样式，若网页未定义深色样式，则保持原状。如需开启强制深色模式，建议配合[forceDarkAccess](#forcedarkaccess9)使用。
+
+**参数：**
+
+| 参数名 | 参数类型 | 必填 | 默认值  | 参数描述                       |
+| ------ | ----------- | ---- | --------------- | ------------------ |
+|  mode  | [WebDarkMode](#webdarkmode9枚举说明) | 是   | WebDarkMode.Off | 设置Web的深色模式为关闭、开启或跟随系统。 |
+
+**示例：**
+
+  ```ts
+  // xxx.ets
+  import web_webview from '@ohos.web.webview'
+  @Entry
+  @Component
+  struct WebComponent {
+    controller: web_webview.WebviewController = new web_webview.WebviewController()
+    @State mode: WebDarkMode = WebDarkMode.On
+    build() {
+      Column() {
+        Web({ src: 'www.example.com', controller: this.controller })
+          .darkMode(this.mode)
+      }
+    }
+  }
+  ```
+
+### forceDarkAccess<sup>9+</sup>
+
+forceDarkAccess(access: boolean)
+
+设置网页是否开启强制深色模式。默认关闭。该属性仅在[darkMode](#darkmode9)开启深色模式时生效。
+
+**参数：**
+
+| 参数名 | 参数类型 | 必填 | 默认值  | 参数描述                       |
+| ------ | ------- | ---- | ----- | ------------------ |
+| access | boolean | 是   | false | 设置网页是否开启强制深色模式。 |
+
+**示例：**
+
+  ```ts
+  // xxx.ets
+  import web_webview from '@ohos.web.webview'
+  @Entry
+  @Component
+  struct WebComponent {
+    controller: web_webview.WebviewController = new web_webview.WebviewController()
+    @State mode: WebDarkMode = WebDarkMode.On
+    @State access: boolean = true
+    build() {
+      Column() {
+        Web({ src: 'www.example.com', controller: this.controller })
+          .darkMode(this.mode)
+          .forceDarkAccess(this.access)
+      }
+    }
+  }
+  ```
+
 ## 事件
 
 不支持通用事件。
@@ -2186,7 +2250,7 @@ onPermissionRequest(callback: (event?: { request: PermissionRequest }) => void)
 
 onContextMenuShow(callback: (event?: { param: WebContextMenuParam, result: WebContextMenuResult }) => boolean)
 
-长按特定元素（例如图片，链接），跳出菜单。
+长按特定元素（例如图片，链接）或鼠标右键，跳出菜单。
 
 **参数：**
 
@@ -3235,9 +3299,44 @@ grant(resources: Array\<string\>): void
 | --------- | --------------- | ---- | ---- | ------------- |
 | resources | Array\<string\> | 是    | -    | 网页所请求的权限资源列表。 |
 
+## ContextMenuSourceType<sup>9+</sup>枚举说明
+| 名称                   | 描述         |
+| -------------------- | ---------- |
+| None        | 其他事件来源。  |
+| Mouse       | 鼠标事件。  |
+| LongPress   | 长按事件。  |
+
+## ContextMenuMediaType<sup>9+</sup>枚举说明
+
+| 名称           | 描述          |
+| ------------ | ----------- |
+| None      | 非特殊媒体或其他媒体类型。 |
+| Image     | 图片。     |
+
+## ContextMenuInputFieldType<sup>9+</sup>枚举说明
+
+| 名称           | 描述          |
+| ------------ | ----------- |
+| None      | 非输入框。       |
+| PlainText | 纯文本类型，包括text、search、email等。   |
+| Password  | 密码类型。     |
+| Number    | 数字类型。     |
+| Telephone | 电话号码类型。 |
+| Other     | 其他类型。     |
+
+## ContextMenuEditStateFlags<sup>9+</sup>枚举说明
+
+| 名称         | 描述         |
+| ------------ | ----------- |
+| NONE         | 不可编辑。   |
+| CAN_CUT      | 支持剪切。   |
+| CAN_COPY     | 支持拷贝。   |
+| CAN_PASTE    | 支持粘贴。   |
+| CAN_SELECT_ALL  | 支持全选。 |
+
 ## WebContextMenuParam<sup>9+</sup>
 
-实现长按页面元素跳出来的菜单信息。示例代码参考[onContextMenuShow事件](#oncontextmenushow9)。
+实现长按页面元素或鼠标右键弹出来的菜单信息。示例代码参考[onContextMenuShow事件](#oncontextmenushow9)。
 
 ### x<sup>9+</sup>
 
@@ -3311,9 +3410,81 @@ existsImageContents(): boolean
 | ------- | ------------------------- |
 | boolean | 长按位置中有图片返回true，否则返回false。 |
 
+### getMediaType<sup>9+</sup>
+
+getMediaType(): ContextMenuMediaType
+
+获取网页元素媒体类型。
+
+**返回值：**
+
+| 类型                                       | 说明          |
+| ---------------------------------------- | ----------- |
+| [ContextMenuMediaType](#contextmenumediatype9枚举说明) | 网页元素媒体类型。 |
+
+### getSelectionText<sup>9+</sup>
+
+getSelectionText(): string
+
+获取选中文本。
+
+**返回值：**
+
+| 类型      | 说明                        |
+| ------- | ------------------------- |
+| string | 菜单上下文选中文本内容，不存在则返回空。 |
+
+### getSourceType<sup>9+</sup>
+
+getSourceType(): ContextMenuSourceType
+
+获取菜单事件来源。
+
+**返回值：**
+
+| 类型                                       | 说明          |
+| ---------------------------------------- | ----------- |
+| [ContextMenuSourceType](#contextmenusourcetype9枚举说明) | 菜单事件来源。 |
+
+### getInputFieldType<sup>9+</sup>
+
+getInputFieldType(): ContextMenuInputFieldType
+
+获取网页元素输入框类型。
+
+**返回值：**
+
+| 类型                                       | 说明          |
+| ---------------------------------------- | ----------- |
+| [ContextMenuInputFieldType](#contextmenuinputfieldtype9枚举说明) | 输入框类型。 |
+
+### isEditable<sup>9+</sup>
+
+isEditable(): boolean
+
+获取网页元素是否可编辑标识。
+
+**返回值：**
+
+| 类型      | 说明                        |
+| ------- | ------------------------- |
+| boolean | 网页元素可编辑返回true，不可编辑返回false。 |
+
+### getEditStateFlags<sup>9+</sup>
+
+getEditStateFlags(): number
+
+获取网页元素可编辑标识。
+
+**返回值：**
+
+| 类型      | 说明                        |
+| ------- | ------------------------- |
+| number | 网页元素可编辑标识，参照[ContextMenuEditStateFlags](#contextmenueditstateflags9枚举说明)。 |
+
 ## WebContextMenuResult<sup>9+</sup>
 
-实现长按页面元素跳出来的菜单所执行的响应事件。示例代码参考[onContextMenuShow事件](#oncontextmenushow9)。
+实现长按页面元素或鼠标右键弹出来的菜单所执行的响应事件。示例代码参考[onContextMenuShow事件](#oncontextmenushow9)。
 
 ### closeContextMenu<sup>9+</sup>
 
@@ -3327,6 +3498,30 @@ copyImage(): void
 
 WebContextMenuParam有图片内容则复制图片。
 
+### copy<sup>9+</sup>
+
+copy(): void
+
+执行与此上下文菜单相关的拷贝操作。
+
+### paste<sup>9+</sup>
+
+paste(): void
+
+执行与此上下文菜单相关的粘贴操作。
+
+### cut<sup>9+</sup>
+
+cut(): void
+
+执行与此上下文菜单相关的剪切操作。
+
+### selectAll<sup>9+</sup>
+
+selectAll(): void
+
+执行与此上下文菜单相关的全选操作。
+
 ## JsGeolocation
 
 Web组件返回授权或拒绝权限功能的对象。示例代码参考[onGeolocationShow事件](#ongeolocationshow)。
@@ -5973,6 +6168,13 @@ onSslErrorEventReceive接口返回的SSL错误的具体原因。
 | --------- | ------------- | -------------------------- |
 | MidiSysex | MIDI SYSEX资源。 | 目前仅支持权限事件上报，MIDI设备的使用还未支持。 |
 
+## WebDarkMode<sup>9+</sup>枚举说明
+| 名称      | 描述                                   |
+| ------- | ------------------------------------ |
+| Off     | Web深色模式关闭。                     |
+| On      | Web深色模式开启。                     |
+| Auto    | Web深色模式跟随系统。                 |
+
 ## WebAsyncController
 
 通过WebAsyncController可以控制Web组件具有异步回调通知的行为，一个WebAsyncController对象控制一个Web组件。