From 9acc3daf3b42ac52de137c4a2087010353a0e6ad Mon Sep 17 00:00:00 2001
From: esterzhou <ester.zhou@huawei.com>
Date: Sat, 31 Dec 2022 15:59:27 +0800
Subject: [PATCH] update docs (12813)

Signed-off-by: esterzhou <ester.zhou@huawei.com>
---
 .../quick-start/arkts-basic-ui-description.md |  36 +-
 .../reference/apis/js-apis-request.md         | 986 +++++++++---------
 .../reference/arkui-ts/figures/focus.png      | Bin 0 -> 18108 bytes
 .../reference/arkui-ts/ts-types.md            |  18 +-
 .../arkui-ts/ts-universal-focus-event.md      |  57 +-
 5 files changed, 543 insertions(+), 554 deletions(-)
 create mode 100644 en/application-dev/reference/arkui-ts/figures/focus.png

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 d20efe1285..f8afbe2d46 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
@@ -146,7 +146,7 @@ Events supported by components are configured using event methods, which each fo
   ...
 
   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)
   }
   ```
 
diff --git a/en/application-dev/reference/apis/js-apis-request.md b/en/application-dev/reference/apis/js-apis-request.md
index 65e8c2708c..26723ecb4d 100644
--- a/en/application-dev/reference/apis/js-apis-request.md
+++ b/en/application-dev/reference/apis/js-apis-request.md
@@ -1,9 +1,9 @@
-# Upload and Download
+# @ohos.request
 
 The **request** module provides applications with basic upload, download, and background transmission agent capabilities.
 
 > **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.
 
 
@@ -34,7 +34,7 @@ var config = {
 
 The **cleartextTraffic** attribute is not involved during application development in the stage model.
 
-The download server must support the HTTP HEAD method so that the size of the data to download can be obtained through **content-length**. Otherwise, the download task fails. If this is the case, you can check the failure cause through [on('fail')<sup>7+</sup>)](#onfail7).
+The download server must support the HTTP HEAD method so that the size of the data to download can be obtained through **Content-length**. Otherwise, the download task fails. If this is the case, you can check the failure cause through [on('fail')<sup>7+</sup>](#onfail7).
 
 
 ## Constants
@@ -69,34 +69,39 @@ The download server must support the HTTP HEAD method so that the size of the da
 | SESSION_SUCCESSFUL<sup>7+</sup> | number | Yes| No| Successful download.|
 
 
-## request.upload
+## request.uploadFile<sup>9+</sup>
 
-upload(config: UploadConfig): Promise&lt;UploadTask&gt;
+uploadFile(context: BaseContext, config: UploadConfig): Promise&lt;UploadTask&gt;
 
 Uploads files. This API uses a promise to return the result.
 
-This API can be used only in the FA model.
-
->  **NOTE**<br>This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9).
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
+| config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400002 | Bad file path. |
 
 **Example**
-  
+
   ```js
   let uploadTask;
   let uploadConfig = {
@@ -106,39 +111,45 @@ This API can be used only in the FA model.
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.upload(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);
+  }
   ```
 
 
-## request.upload
+## request.uploadFile<sup>9+</sup>
 
-upload(config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
+uploadFile(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
 
 Uploads files. This API uses an asynchronous callback to return the result.
 
-This API can be used only in the FA model.
-
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1).
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
-  | callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
+| config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+| callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400002 | Bad file path. |
 
 **Example**
-  
+
   ```js
   let uploadTask;
   let uploadConfig = {
@@ -148,23 +159,30 @@ This API can be used only in the FA model.
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.upload(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>9+</sup>
 
-upload(context: BaseContext, config: UploadConfig): Promise&lt;UploadTask&gt;
+## request.upload<sup>(deprecated)</sup>
+
+upload(config: UploadConfig): Promise&lt;UploadTask&gt;
 
 Uploads files. This API uses a promise to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9).
+**Model restriction**: This API can be used only in the FA model.
+
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -172,20 +190,18 @@ Uploads files. This API uses a promise to return the result.
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | context | BaseContext | Yes| Application-based context.|
-  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
-  
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
 
 **Example**
-  
+
   ```js
   let uploadTask;
   let uploadConfig = {
@@ -195,23 +211,25 @@ Uploads files. This API uses a promise to return the result.
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.upload(globalThis.abilityContext, uploadConfig).then((data) => {
+  request.upload(uploadConfig).then((data) => {
       uploadTask = data;
   }).catch((err) => {
       console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
-  });
+  })
   ```
 
 
-## request.upload<sup>9+</sup>
+## request.upload<sup>(deprecated)</sup>
 
-upload(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
+upload(config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
 
 Uploads files. This API uses an asynchronous callback to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1).
+**Model restriction**: This API can be used only in the FA model.
+
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -219,14 +237,13 @@ Uploads files. This API uses an asynchronous callback to return the result.
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | context | BaseContext | Yes| Application-based context.|
-  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
-  | callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+| callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
 
 **Example**
-  
+
   ```js
   let uploadTask;
   let uploadConfig = {
@@ -236,7 +253,7 @@ Uploads files. This API uses an asynchronous callback to return the result.
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.upload(globalThis.abilityContext, uploadConfig, (err, data) => {
+  request.upload(uploadConfig, (err, data) => {
       if (err) {
           console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
           return;
@@ -245,13 +262,16 @@ Uploads files. This API uses an asynchronous callback to return the result.
   });
   ```
 
+## request.upload<sup>(deprecated)</sup>
 
-## request.uploadFile<sup>9+</sup>
-
-uploadFile(context: BaseContext, config: UploadConfig): Promise&lt;UploadTask&gt;
+upload(context: BaseContext, config: UploadConfig): Promise&lt;UploadTask&gt;
 
 Uploads files. This API uses a promise to return the result.
 
+>  **NOTE**
+>
+>  This API is supported since API version 9 and is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
@@ -259,23 +279,16 @@ Uploads files. This API uses a promise to return the result.
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| context | BaseContext | Yes| Application-based context.|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
 | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
 
 
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
-| Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
-
-**Error codes**
-For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
-
-| ID| Error Message|
 | -------- | -------- |
-| 13400002 | Bad file path. |
+| Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
 
 **Example**
 
@@ -288,7 +301,7 @@ 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) => {
+  request.upload(globalThis.abilityContext, uploadConfig).then((data) => {
       uploadTask = data;
   }).catch((err) => {
       console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
@@ -296,12 +309,16 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
   ```
 
 
-## request.uploadFile<sup>9+</sup>
+## request.upload<sup>(deprecated)</sup>
 
-uploadFile(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
+upload(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
 
 Uploads files. This API uses an asynchronous callback to return the result.
 
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
@@ -309,18 +326,11 @@ Uploads files. This API uses an asynchronous callback to return the result.
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| context | BaseContext | Yes| Application-based context.|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
 | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
 | callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
 
-**Error codes**
-For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
-
-| ID| Error Message|
-| -------- | -------- |
-| 13400002 | Bad file path. |
-
 **Example**
 
   ```js
@@ -332,7 +342,7 @@ 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) => {
+  request.upload(globalThis.abilityContext, uploadConfig, (err, data) => {
       if (err) {
           console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
           return;
@@ -341,10 +351,10 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
   });
   ```
 
-
 ## UploadTask
 
-Implements file uploads. Before using any APIs of this class, you must obtain an **UploadTask** object.
+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')
@@ -359,22 +369,21 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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 bits.|
+| totalSize | number | Yes| Total size of the files to upload, in bits.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
   uploadTask.on('progress', function callback(uploadedSize, totalSize) {
       console.info("upload totalSize:" + totalSize + "  uploadedSize:" + uploadedSize);
   }
@@ -394,21 +403,20 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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|
 | -------- | -------- | -------- | -------- |
 | header | object | Yes| HTTP Response Header.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
   uploadTask.on('headerReceive', function callback(headers){   
       console.info("upOnHeader headers:" + JSON.stringify(headers));
   }
@@ -428,21 +436,20 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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|
 | -------- | -------- | -------- | -------- |
 | taskstates | Array&lt;[TaskState](#taskstate9)&gt; | Yes| Upload result.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
   uploadTask.on('complete', function callback(taskStates) {
     for (let i = 0; i < taskStates.length; i++ ) {
       console.info("upOnComplete taskState:" + JSON.stringify(taskStates[i]));
@@ -471,22 +478,21 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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 bits.|
+| totalSize | number | Yes| Total size of the files to upload, in bits.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
   uploadTask.off('progress', function callback(uploadedSize, totalSize) {
       console.info('uploadedSize: ' + uploadedSize, 'totalSize: ' + totalSize);
   }
@@ -506,21 +512,20 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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|
 | -------- | -------- | -------- | -------- |
 | header | object | Yes| HTTP Response Header.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
   uploadTask.off('headerReceive', function callback(headers) {
       console.info("upOnHeader headers:" + JSON.stringify(headers));
   }
@@ -539,21 +544,20 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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|
 | -------- | -------- | -------- | -------- |
 | taskstates | Array&lt;[TaskState](#taskstate9)&gt; | Yes| Upload result.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
   uploadTask.off('complete', function callback(taskStates) {
     for (let i = 0; i < taskStates.length; i++ ) {
       console.info("upOnComplete taskState:" + JSON.stringify(taskStates[i]));
@@ -569,16 +573,10 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
   );
   ```
 
+### delete<sup>9+</sup>
+delete(): Promise&lt;boolean&gt;
 
-### remove
-
-remove(): Promise&lt;boolean&gt;
-
-Removes this upload task. This API uses a promise to return the result. 
-
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9).
+Deletes this upload task. This API uses a promise to return the result. 
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -586,15 +584,14 @@ Removes this upload task. This API uses a promise to return the result.
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;boolean&gt; | Promise used to return the result. It returns **true** if the operation is successful and returns **false** otherwise.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the task removal result. It returns **true** if the operation is successful and returns **false** otherwise.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
-  uploadTask.remove().then((result) => {
+  uploadTask.delete().then((result) => {
       if (result) {
           console.info('Upload task removed successfully. ');
       } else {
@@ -606,15 +603,11 @@ Removes this upload task. This API uses a promise to return the result.
   ```
 
 
-### remove
-
-remove(callback: AsyncCallback&lt;boolean&gt;): void
+### delete<sup>9+</sup>
 
-Removes this upload task. This API uses an asynchronous callback to return the result. 
+delete(callback: AsyncCallback&lt;boolean&gt;): void
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-1).
+Deletes this upload task. This API uses an asynchronous callback to return the result. 
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -622,15 +615,14 @@ Removes this upload task. This API uses an asynchronous callback to return the r
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
 
 **Example**
-  
+
   ```js
-  let uploadTask;
-  uploadTask.remove((err, result) => {
+  uploadTask.delete((err, result) => {
       if (err) {
           console.error('Failed to remove the upload task. Cause: ' + JSON.stringify(err));
           return;
@@ -644,11 +636,15 @@ Removes this upload task. This API uses an asynchronous callback to return the r
   ```
 
 
-### delete<sup>9+</sup>
+### remove<sup>(deprecated)</sup>
 
-delete(): Promise&lt;boolean&gt;
+remove(): Promise&lt;boolean&gt;
 
-Deletes this upload task. This API uses a promise to return the result. 
+Removes this upload task. This API uses a promise to return the result. 
+
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -657,14 +653,13 @@ Deletes this upload task. This API uses a promise to return the result.
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
-| Promise&lt;boolean&gt; | Promise used to return the task deletion result. It returns **true** if the operation is successful and returns **false** otherwise.|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the task removal result. It returns **true** if the operation is successful and returns **false** otherwise.|
 
 **Example**
 
   ```js
-  let uploadTask;
-  uploadTask.delete().then((result) => {
+  uploadTask.remove().then((result) => {
       if (result) {
           console.info('Upload task removed successfully. ');
       } else {
@@ -676,11 +671,15 @@ Deletes this upload task. This API uses a promise to return the result.
   ```
 
 
-### delete<sup>9+</sup>
+### remove<sup>(deprecated)</sup>
 
-delete(callback: AsyncCallback&lt;boolean&gt;): void
+remove(callback: AsyncCallback&lt;boolean&gt;): void
 
-Deletes this upload task. This API uses an asynchronous callback to return the result. 
+Removes this upload task. This API uses an asynchronous callback to return the result. 
+
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-1).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -689,14 +688,13 @@ Deletes this upload task. This API uses an asynchronous callback to return the r
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
+| -------- | -------- | -------- | -------- |
 | callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
 
 **Example**
 
   ```js
-  let uploadTask;
-  uploadTask.delete((err, result) => {
+  uploadTask.remove((err, result) => {
       if (err) {
           console.error('Failed to remove the upload task. Cause: ' + JSON.stringify(err));
           return;
@@ -709,7 +707,6 @@ Deletes this upload task. This API uses an asynchronous callback to return the r
   });
   ```
 
-
 ## UploadConfig
 
 **Required permissions**: ohos.permission.INTERNET
@@ -746,7 +743,7 @@ Deletes this upload task. This API uses an asynchronous callback to return the r
 | -------- | -------- | -------- | -------- |
 | filename | string | Yes| File name in the header when **multipart** is used.|
 | name | string | Yes| Name of a form item when **multipart** is used. The default value is **file**.|
-| uri | string | Yes| Local path for storing files.<br>The **dataability** and **internal** protocol types are supported. However, the **internal** protocol type supports only temporary directories. Below are examples:<br>dataability:///com.domainname.dataability.persondata/person/10/file.txt<br>internal://cache/path/to/file.txt |
+| uri | string | Yes| Local path for storing files.<br>The **dataability** and **internal** protocol types are supported. However, the **internal** protocol type supports only temporary directories. Below are examples:<br>dataability:///com.domainname.dataability.persondata/person/10/file.txt<br><br>internal://cache/path/to/file.txt |
 | type | string | Yes| Type of the file content. By default, the type is obtained based on the extension of the file name or URI.|
 
 
@@ -761,93 +758,110 @@ Deletes this upload task. This API uses an asynchronous callback to return the r
 | name | string | Yes| Name of a form element.|
 | value | string | Yes| Value of a form element.|
 
+## request.downloadFile<sup>9+</sup>
 
-## request.download
-
-download(config: DownloadConfig): Promise&lt;DownloadTask&gt;
+downloadFile(context: BaseContext, config: DownloadConfig): Promise&lt;DownloadTask&gt;
 
 Downloads files. This API uses a promise to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9).
-
-This API can be used only in the FA model.
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
+| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400001 | File operation error. |
+| 13400002 | Bad file path. |
+| 13400003 | Task manager service error. |
 
 **Example**
-  
+
   ```js
   let downloadTask;
-  request.download({ 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);
+  }
   ```
 
 
-## request.download
+## request.downloadFile<sup>9+</sup>
 
-download(config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void
+downloadFile(context: BaseContext, config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void;
 
 Downloads files. This API uses an asynchronous callback to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1).
-
-This API can be used only in the FA model.
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
-  | callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
+| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+| callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400001 | File operation error. |
+| 13400002 | Bad file path. |
+| 13400003 | Task manager service error. |
 
 **Example**
-  
+
   ```js
   let downloadTask;
-  request.download({ 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>9+</sup>
+## request.download<sup>(deprecated)</sup>
 
-download(context: BaseContext, config: DownloadConfig): Promise&lt;DownloadTask&gt;
+download(config: DownloadConfig): Promise&lt;DownloadTask&gt;
 
 Downloads files. This API uses a promise to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9).
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9).
+
+**Model restriction**: This API can be used only in the FA model.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -855,22 +869,21 @@ Downloads files. This API uses a promise to return the result.
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | context | BaseContext | Yes| Application-based context.|
-  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
 
 **Example**
-  
+
   ```js
   let downloadTask;
-  request.download(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
+  request.download({ url: 'https://xxxx/xxxx.hap' }).then((data) => {
       downloadTask = data;
   }).catch((err) => {
       console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
@@ -878,15 +891,17 @@ Downloads files. This API uses a promise to return the result.
   ```
 
 
-## request.download<sup>9+</sup>
+## request.download<sup>(deprecated)</sup>
 
-download(context: BaseContext, config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void;
+download(config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void
 
 Downloads files. This API uses an asynchronous callback to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1).
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1).
+
+**Model restriction**: This API can be used only in the FA model.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -894,17 +909,16 @@ Downloads files. This API uses an asynchronous callback to return the result.
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | context | BaseContext | Yes| Application-based context.|
-  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
-  | callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+| callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
 
 **Example**
-  
+
   ```js
   let downloadTask;
-  request.download(globalThis.abilityContext, { url: 'https://xxxx/xxxxx.hap', 
+  request.download({ url: 'https://xxxx/xxxxx.hap', 
   filePath: 'xxx/xxxxx.hap'}, (err, data) => {
       if (err) {
           console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
@@ -914,13 +928,16 @@ Downloads files. This API uses an asynchronous callback to return the result.
   });
   ```
 
+## request.download<sup>(deprecated)</sup>
 
-## request.downloadFile<sup>9+</sup>
-
-downloadFile(context: BaseContext, config: DownloadConfig): Promise&lt;DownloadTask&gt;
+download(context: BaseContext, config: DownloadConfig): Promise&lt;DownloadTask&gt;
 
 Downloads files. This API uses a promise to return the result.
 
+>  **NOTE**
+>
+>  This API is supported since API version 9 and is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
@@ -928,30 +945,21 @@ Downloads files. This API uses a promise to return the result.
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| context | BaseContext | Yes| Application-based context.|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
 | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
-| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
-
-**Error codes**
-For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
-
-| ID| Error Message|
-| -------- | -------- |
-| 13400001 | File operation error. |
-| 13400002 | Bad file path. |
-| 13400003 | Task manager service error. |
+| -------- | -------- |
+| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
 
 **Example**
 
   ```js
   let downloadTask;
-  request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
+  request.download(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
       downloadTask = data;
   }).catch((err) => {
       console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
@@ -959,12 +967,16 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
   ```
 
 
-## request.downloadFile<sup>9+</sup>
+## request.download<sup>(deprecated)</sup>
 
-downloadFile(context: BaseContext, config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void;
+download(context: BaseContext, config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void;
 
 Downloads files. This API uses an asynchronous callback to return the result.
 
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
@@ -972,25 +984,16 @@ Downloads files. This API uses an asynchronous callback to return the result.
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| context | BaseContext | Yes| Application-based context.|
+| -------- | -------- | -------- | -------- |
+| context | [BaseContext](js-apis-inner-application-baseContext.md) | Yes| Application-based context.|
 | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 | callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
 
-**Error codes**
-For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
-
-| ID| Error Message|
-| -------- | -------- |
-| 13400001 | File operation error. |
-| 13400002 | Bad file path. |
-| 13400003 | Task manager service error. |
-
 **Example**
 
   ```js
   let downloadTask;
-  request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxxx.hap', 
+  request.download(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));
@@ -1003,7 +1006,7 @@ For details about the error codes, see [Upload and Download Error Codes](../erro
 
 ## DownloadTask
 
-Implements file downloads.
+Implements file downloads. Before using any APIs of this class, you must obtain a **DownloadTask** object through [request.downloadFile<sup>9+</sup>](#requestdownloadfile9) in promise mode or [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1) in callback mode.
 
 
 ### on('progress')
@@ -1018,10 +1021,10 @@ Subscribes to a download event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (download progress).|
-  | callback | function | Yes| Callback for the download progress event.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (download progress).|
+| callback | function | Yes| Callback for the download progress event.|
 
   Parameters of the callback function
 
@@ -1031,9 +1034,8 @@ Subscribes to a download event. This API uses an asynchronous callback to return
 | totalSize | number | Yes| Total size of the files to download, in KB.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
   downloadTask.on('progress', function download_callback(receivedSize, totalSize) {
       console.info("download receivedSize:" + receivedSize + " totalSize:" + totalSize);
   }
@@ -1053,20 +1055,20 @@ Unsubscribes from a download event. This API uses an asynchronous callback to re
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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 bits.|
+| totalSize | number | Yes| Total size of the files to download, in bits.|
 
 **Example**
-  
+
   ```js
   downloadTask .off('progress', function download_callback(receivedSize, totalSize) {
       console.info("download receivedSize:" + receivedSize + " totalSize:" + totalSize);
@@ -1087,15 +1089,14 @@ Subscribes to a download event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | type | string | Yes| Type of the event to subscribe to.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
-  | callback | function | Yes| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| type | string | Yes| Type of the event to subscribe to.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
+| callback | function | Yes| Callback used to return the result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
   downloadTask.on('complete', function callback() {
       console.info('Download task completed.');
   }
@@ -1115,15 +1116,14 @@ Unsubscribes from a download event. This API uses an asynchronous callback to re
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | type | string | Yes| Type of the event to unsubscribe from.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
-  | callback | function | No| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| type | string | Yes| Type of the event to unsubscribe from.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
+| callback | function | No| Callback used to return the result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
   downloadTask.off('complete', function callback() {
       console.info('Download task completed.');
   }
@@ -1143,10 +1143,10 @@ Subscribes to the download task failure event. This API uses an asynchronous cal
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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
 
@@ -1155,9 +1155,8 @@ Subscribes to the download task failure event. This API uses an asynchronous cal
 | err | number | Yes| Error code of the download failure. For details about the error codes, see [ERROR_*](#constants).|
 
 **Example**
-  
+
   ```js 
-  let downloadTask;
   downloadTask.on('fail', function callBack(err) {
       console.info('Download task failed. Cause:' + err);
   }
@@ -1177,53 +1176,46 @@ Unsubscribes from the download task failure event. This API uses an asynchronous
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | 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.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| 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).|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
   downloadTask.off('fail', function callBack(err) {
       console.info('Download task failed. Cause:' + err);
   } 
   );
   ```
 
+  ### delete<sup>9+</sup>
 
-### remove
-
-remove(): Promise&lt;boolean&gt;
+delete(): Promise&lt;boolean&gt;
 
 Removes this download task. This API uses a promise to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-2).
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;boolean&gt; | Promise used to return the task removal result.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the task removal result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.remove().then((result) => {
+  downloadTask.delete().then((result) => {
       if (result) {
           console.info('Download task removed.');
       } else {
@@ -1235,31 +1227,26 @@ Removes this download task. This API uses a promise to return the result.
   ```
 
 
-### remove
+### delete<sup>9+</sup>
 
-remove(callback: AsyncCallback&lt;boolean&gt;): void
+delete(callback: AsyncCallback&lt;boolean&gt;): void
 
 Removes this download task. This API uses an asynchronous callback to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-3).
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the task removal result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the task removal result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.remove((err, result)=>{
+  downloadTask.delete((err, result)=>{
       if(err) {
           console.error('Failed to remove the download task.');
           return;
@@ -1273,15 +1260,11 @@ Removes this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### query<sup>7+</sup>
-
-query(): Promise&lt;DownloadInfo&gt;
+### getTaskInfo<sup>9+</sup>
 
-Queries this download task. This API uses a promise to return the result.
+getTaskInfo(): Promise&lt;DownloadInfo&gt;
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [getTaskInfo<sup>9+</sup>](#gettaskinfo9).
+Obtains the information about this download task. This API uses a promise to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1289,15 +1272,14 @@ Queries this download task. This API uses a promise to return the result.
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;[DownloadInfo](#downloadinfo7)&gt; | Promise used to return the download task information.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;[DownloadInfo](#downloadinfo7)&gt; | Promise used to return the download task information.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.query().then((downloadInfo) => {    
+  downloadTask.getTaskInfo().then((downloadInfo) => {    
       console.info('Download task queried. Data:' + JSON.stringify(downloadInfo))
   }) .catch((err) => {
       console.error('Failed to query the download task. Cause:' + err)
@@ -1305,15 +1287,11 @@ Queries this download task. This API uses a promise to return the result.
   ```
 
 
-### query<sup>7+</sup>
-
-query(callback: AsyncCallback&lt;DownloadInfo&gt;): void
+### getTaskInfo<sup>9+</sup>
 
-Queries this download task. This API uses an asynchronous callback to return the result.
+getTaskInfo(callback: AsyncCallback&lt;DownloadInfo&gt;): void
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [getTaskInfo<sup>9+</sup>](#gettaskinfo9-1).
+Obtains the information about this download task. This API uses an asynchronous callback to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1321,15 +1299,14 @@ Queries this download task. This API uses an asynchronous callback to return the
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | callback | AsyncCallback&lt;[DownloadInfo](#downloadinfo7)&gt; | Yes| Callback used to return the download task information.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;[DownloadInfo](#downloadinfo7)&gt; | Yes| Callback used to return the download task information.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.query((err, downloadInfo)=>{
+  downloadTask.getTaskInfo((err, downloadInfo)=>{
       if(err) {
           console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
       } else {
@@ -1339,15 +1316,11 @@ Queries this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### queryMimeType<sup>7+</sup>
-
-queryMimeType(): Promise&lt;string&gt;
+### getTaskMimeType<sup>9+</sup>
 
-Queries the **MimeType** of this download task. This API uses a promise to return the result.
+getTaskMimeType(): Promise&lt;string&gt;
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [getTaskMimeType<sup>9+</sup>](#gettaskmimetype9).
+Obtains the **MimeType** of this download task. This API uses a promise to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1355,15 +1328,14 @@ Queries the **MimeType** of this download task. This API uses a promise to retur
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;string&gt; | Promise used to return the **MimeType** of the download task.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;string&gt; | Promise used to return the **MimeType** of the download task.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.queryMimeType().then((data) => {    
+  downloadTask.getTaskMimeType().then((data) => {    
       console.info('Download task queried. Data:' + JSON.stringify(data));
   }).catch((err) => {
       console.error('Failed to query the download MimeType. Cause:' + JSON.stringify(err))
@@ -1371,15 +1343,11 @@ Queries the **MimeType** of this download task. This API uses a promise to retur
   ```
 
 
-### queryMimeType<sup>7+</sup>
-
-queryMimeType(callback: AsyncCallback&lt;string&gt;): void;
+### getTaskMimeType<sup>9+</sup>
 
-Queries the **MimeType** of this download task. This API uses an asynchronous callback to return the result.
+getTaskMimeType(callback: AsyncCallback&lt;string&gt;): void;
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [getTaskMimeType<sup>9+</sup>](#gettaskmimetype9-1).
+Obtains the **MimeType** of this download task. This API uses an asynchronous callback to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1387,15 +1355,14 @@ Queries the **MimeType** of this download task. This API uses an asynchronous ca
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | callback | AsyncCallback&lt;string&gt; | Yes| Callback used to return the **MimeType** of the download task.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;string&gt; | Yes| Callback used to return the **MimeType** of the download task.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.queryMimeType((err, data)=>{
+  downloadTask.getTaskMimeType((err, data)=>{
       if(err) {
           console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
       } else {
@@ -1405,31 +1372,26 @@ Queries the **MimeType** of this download task. This API uses an asynchronous ca
   ```
 
 
-### pause<sup>7+</sup>
+### suspend<sup>9+</sup>
 
-pause(): Promise&lt;void&gt;
+suspend(): Promise&lt;boolean&gt;
 
 Pauses this download task. This API uses a promise to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [suspend<sup>9+</sup>](#suspend9).
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;void&gt; | Promise used to return the download task pause result.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the download task pause result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.pause().then((result) => {    
+  downloadTask.suspend().then((result) => {    
       if (result) {
            console.info('Download task paused. ');
       } else {
@@ -1441,13 +1403,9 @@ Pauses this download task. This API uses a promise to return the result.
   ```
 
 
-### pause<sup>7+</sup>
-
-pause(callback: AsyncCallback&lt;void&gt;): void
+### suspend<sup>9+</sup>
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [suspend<sup>9+</sup>](#suspend9-1).
+suspend(callback: AsyncCallback&lt;boolean&gt;): void
 
 Pauses this download task. This API uses an asynchronous callback to return the result.
 
@@ -1457,15 +1415,14 @@ Pauses this download task. This API uses an asynchronous callback to return the
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.pause((err, result)=>{
+  downloadTask.suspend((err, result)=>{
       if(err) {
           console.error('Failed to pause the download task. Cause:' + JSON.stringify(err));
           return;
@@ -1479,31 +1436,26 @@ Pauses this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### resume<sup>7+</sup>
+### restore<sup>9+</sup>
 
-resume(): Promise&lt;void&gt;
+restore(): Promise&lt;boolean&gt;
 
 Resumes this download task. This API uses a promise to return the result.
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [restore<sup>9+</sup>](#restore9).
-
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Return value**
 
-  | Type| Description|
-  | -------- | -------- |
-  | Promise&lt;void&gt; | Promise used to return the result.|
+| Type| Description|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.resume().then((result) => {
+  downloadTask.restore().then((result) => {
       if (result) {
           console.info('Download task resumed.')
       } else {
@@ -1516,13 +1468,9 @@ Resumes this download task. This API uses a promise to return the result.
   ```
 
 
-### resume<sup>7+</sup>
-
-resume(callback: AsyncCallback&lt;void&gt;): void
+### restore<sup>9+</sup>
 
-> **NOTE**
-> 
-> This API is deprecated since API version 9. You are advised to use [restore<sup>9+</sup>](#restore9-1).
+restore(callback: AsyncCallback&lt;boolean&gt;): void
 
 Resumes this download task. This API uses an asynchronous callback to return the result.
 
@@ -1532,15 +1480,14 @@ Resumes this download task. This API uses an asynchronous callback to return the
 
 **Parameters**
 
-  | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
 
 **Example**
-  
+
   ```js
-  let downloadTask;
-  downloadTask.resume((err, result)=>{
+  downloadTask.restore((err, result)=>{
       if (err) {
           console.error('Failed to resume the download task. Cause:' + err);
           return;
@@ -1554,11 +1501,16 @@ Resumes this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### delete<sup>9+</sup>
 
-delete(): Promise&lt;boolean&gt;
+### remove<sup>(deprecated)</sup>
 
-Deletes this download task. This API uses a promise to return the result.
+remove(): Promise&lt;boolean&gt;
+
+Removes this download task. This API uses a promise to return the result.
+
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-2).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1567,14 +1519,13 @@ Deletes this download task. This API uses a promise to return the result.
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
-| Promise&lt;boolean&gt; | Promise used to return the result.|
+| -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the task removal result.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.delete().then((result) => {
+  downloadTask.remove().then((result) => {
       if (result) {
           console.info('Download task removed.');
       } else {
@@ -1586,11 +1537,15 @@ Deletes this download task. This API uses a promise to return the result.
   ```
 
 
-### delete<sup>9+</sup>
+### remove<sup>(deprecated)</sup>
 
-delete(callback: AsyncCallback&lt;boolean&gt;): void
+remove(callback: AsyncCallback&lt;boolean&gt;): void
 
-Deletes this download task. This API uses an asynchronous callback to return the result.
+Removes this download task. This API uses an asynchronous callback to return the result.
+
+>  **NOTE**
+>
+>  This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-3).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1599,14 +1554,13 @@ Deletes this download task. This API uses an asynchronous callback to return the
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the task removal result.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.delete((err, result)=>{
+  downloadTask.remove((err, result)=>{
       if(err) {
           console.error('Failed to remove the download task.');
           return;
@@ -1620,12 +1574,16 @@ Deletes this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### getTaskInfo<sup>9+</sup>
+### query<sup>(deprecated)</sup>
 
-getTaskInfo(): Promise&lt;DownloadInfo&gt;
+query(): Promise&lt;DownloadInfo&gt;
 
 Queries this download task. This API uses a promise to return the result.
 
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [getTaskInfo<sup>9+</sup>](#gettaskinfo9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
@@ -1639,8 +1597,7 @@ Queries this download task. This API uses a promise to return the result.
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.getTaskInfo().then((downloadInfo) => {    
+  downloadTask.query().then((downloadInfo) => {    
       console.info('Download task queried. Data:' + JSON.stringify(downloadInfo))
   }) .catch((err) => {
       console.error('Failed to query the download task. Cause:' + err)
@@ -1648,12 +1605,16 @@ Queries this download task. This API uses a promise to return the result.
   ```
 
 
-### getTaskInfo<sup>9+</sup>
+### query<sup>(deprecated)</sup>
 
 query(callback: AsyncCallback&lt;DownloadInfo&gt;): void
 
 Queries this download task. This API uses an asynchronous callback to return the result.
 
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [getTaskInfo<sup>9+</sup>](#gettaskinfo9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
@@ -1661,14 +1622,13 @@ Queries this download task. This API uses an asynchronous callback to return the
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
+| -------- | -------- | -------- | -------- |
 | callback | AsyncCallback&lt;[DownloadInfo](#downloadinfo7)&gt; | Yes| Callback used to return the download task information.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.getTaskInfo((err, downloadInfo)=>{
+  downloadTask.query((err, downloadInfo)=>{
       if(err) {
           console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
       } else {
@@ -1678,11 +1638,15 @@ Queries this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### getTaskMimeType<sup>9+</sup>
+### queryMimeType<sup>(deprecated)</sup>
 
-getTaskMimeType(): Promise&lt;string&gt;
+queryMimeType(): Promise&lt;string&gt;
 
-Obtains the **MimeType** of this download task. This API uses a promise to return the result.
+Queries the **MimeType** of this download task. This API uses a promise to return the result.
+
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [getTaskMimeType<sup>9+</sup>](#gettaskmimetype9).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1691,14 +1655,13 @@ Obtains the **MimeType** of this download task. This API uses a promise to retur
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
+| -------- | -------- |
 | Promise&lt;string&gt; | Promise used to return the **MimeType** of the download task.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.getTaskMimeType().then((data) => {    
+  downloadTask.queryMimeType().then((data) => {    
       console.info('Download task queried. Data:' + JSON.stringify(data));
   }).catch((err) => {
       console.error('Failed to query the download MimeType. Cause:' + JSON.stringify(err))
@@ -1706,11 +1669,15 @@ Obtains the **MimeType** of this download task. This API uses a promise to retur
   ```
 
 
-### getTaskMimeType<sup>9+</sup>
+### queryMimeType<sup>(deprecated)</sup>
 
-getTaskMimeType(callback: AsyncCallback&lt;string&gt;): void;
+queryMimeType(callback: AsyncCallback&lt;string&gt;): void;
 
-Obtains the **MimeType** of this download task. This API uses an asynchronous callback to return the result.
+Queries the **MimeType** of this download task. This API uses an asynchronous callback to return the result.
+
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [getTaskMimeType<sup>9+</sup>](#gettaskmimetype9-1).
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -1719,14 +1686,13 @@ Obtains the **MimeType** of this download task. This API uses an asynchronous ca
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
+| -------- | -------- | -------- | -------- |
 | callback | AsyncCallback&lt;string&gt; | Yes| Callback used to return the **MimeType** of the download task.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.getTaskMimeType((err, data)=>{
+  downloadTask.queryMimeType((err, data)=>{
       if(err) {
           console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
       } else {
@@ -1736,12 +1702,16 @@ Obtains the **MimeType** of this download task. This API uses an asynchronous ca
   ```
 
 
-### suspend<sup>9+</sup>
+### pause<sup>(deprecated)</sup>
 
-suspend(): Promise&lt;boolean&gt;
+pause(): Promise&lt;void&gt;
 
 Pauses this download task. This API uses a promise to return the result.
 
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [suspend<sup>9+</sup>](#suspend9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
@@ -1749,14 +1719,13 @@ Pauses this download task. This API uses a promise to return the result.
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
-| Promise&lt;boolean&gt; | Promise used to return the download task pause result.|
+| -------- | -------- |
+| Promise&lt;void&gt; | Promise used to return the download task pause result.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.suspend().then((result) => {    
+  downloadTask.pause().then((result) => {    
       if (result) {
            console.info('Download task paused. ');
       } else {
@@ -1768,9 +1737,13 @@ Pauses this download task. This API uses a promise to return the result.
   ```
 
 
-### suspend<sup>9+</sup>
+### pause<sup>(deprecated)</sup>
 
-suspend(callback: AsyncCallback&lt;boolean&gt;): void
+pause(callback: AsyncCallback&lt;void&gt;): void
+
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [suspend<sup>9+</sup>](#suspend9-1).
 
 Pauses this download task. This API uses an asynchronous callback to return the result.
 
@@ -1781,14 +1754,13 @@ Pauses this download task. This API uses an asynchronous callback to return the
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.suspend((err, result)=>{
+  downloadTask.pause((err, result)=>{
       if(err) {
           console.error('Failed to pause the download task. Cause:' + JSON.stringify(err));
           return;
@@ -1802,12 +1774,16 @@ Pauses this download task. This API uses an asynchronous callback to return the
   ```
 
 
-### restore<sup>9+</sup>
+### resume<sup>(deprecated)</sup>
 
-restore(): Promise&lt;boolean&gt;
+resume(): Promise&lt;void&gt;
 
 Resumes this download task. This API uses a promise to return the result.
 
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [restore<sup>9+</sup>](#restore9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
@@ -1815,14 +1791,13 @@ Resumes this download task. This API uses a promise to return the result.
 **Return value**
 
 | Type| Description|
-  | -------- | -------- |
-| Promise&lt;boolean&gt; | Promise used to return the result.|
+| -------- | -------- |
+| Promise&lt;void&gt; | Promise used to return the result.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.restore().then((result) => {
+  downloadTask.resume().then((result) => {
       if (result) {
           console.info('Download task resumed.')
       } else {
@@ -1835,9 +1810,13 @@ Resumes this download task. This API uses a promise to return the result.
   ```
 
 
-### restore<sup>9+</sup>
+### resume<sup>(deprecated)</sup>
 
-restore(callback: AsyncCallback&lt;boolean&gt;): void
+resume(callback: AsyncCallback&lt;void&gt;): void
+
+>  **NOTE**
+>
+>  This API is supported since API version 7 and is deprecated since API version 9. You are advised to use [restore<sup>9+</sup>](#restore9-1).
 
 Resumes this download task. This API uses an asynchronous callback to return the result.
 
@@ -1848,14 +1827,13 @@ Resumes this download task. This API uses an asynchronous callback to return the
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-  | -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+| -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
 
 **Example**
 
   ```js
-  let downloadTask;
-  downloadTask.restore((err, result)=>{
+  downloadTask.resume((err, result)=>{
       if (err) {
           console.error('Failed to resume the download task. Cause:' + err);
           return;
@@ -1904,6 +1882,6 @@ Resumes this download task. This API uses an asynchronous callback to return the
 | status | number | Yes| Download status code, which can be any constant of [SESSION_*](#constants).|
 | 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).|
+| 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/arkui-ts/figures/focus.png b/en/application-dev/reference/arkui-ts/figures/focus.png
new file mode 100644
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diff --git a/en/application-dev/reference/arkui-ts/ts-types.md b/en/application-dev/reference/arkui-ts/ts-types.md
index 196d6b8441..ffc46108ad 100644
--- a/en/application-dev/reference/arkui-ts/ts-types.md
+++ b/en/application-dev/reference/arkui-ts/ts-types.md
@@ -18,6 +18,10 @@ You can use `$r` or `$rawfile` to create a **Resource** object, but its attribut
 
   **filename**: name of the file in the **resources/rawfile** directory of the project.
 
+  > **NOTE**
+  >
+  > When referencing resources of the **Resource** type, make sure the data type is the same as that of the attribute method. For example, if an attribute method supports the **string | Resource** types, the data type of the **Resource** type must be string.
+
 ## Length
 
 The **Length** type is used to represent a size unit.
@@ -138,12 +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>
 
@@ -212,4 +216,4 @@ The **CustomBuilder** type is used to define custom UI descriptions in component
 
 | Name           | Type                  | Description                                      |
 | ------------- | ---------------------- | ---------------------------------------- |
-| CustomBuilder | ()&nbsp;=&gt;&nbsp;any | Must be decorated by **@Builder**. For details, see [@Builder](../../quick-start/arkts-dynamic-ui-elememt-building.md#builder).|
+| CustomBuilder | () =&gt; any | Must be decorated by **@Builder**. For details, see [@Builder](../../quick-start/arkts-dynamic-ui-elememt-building.md#builder).|
diff --git a/en/application-dev/reference/arkui-ts/ts-universal-focus-event.md b/en/application-dev/reference/arkui-ts/ts-universal-focus-event.md
index ed825d4041..47015c1a4d 100644
--- a/en/application-dev/reference/arkui-ts/ts-universal-focus-event.md
+++ b/en/application-dev/reference/arkui-ts/ts-universal-focus-event.md
@@ -1,24 +1,23 @@
 # Focus Event
 
-A focus event is triggered when the page focus moves between components. It can be used to change the content of a component.
+A focus event is triggered when the page focus moves between components. It can be used to process related logic within the component.
 
 >  **NOTE**
 >
 >  - The APIs of this module are supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.
+>
 >  - Currently, only the Tab button and arrow buttons on the external keyboard can be used to trigger the focus event.
+>
+>  - Components that have default interaction logic, such as **\<Button>** and **\<TextInput>**, are focusable by default. Other components, such as **\<Text>** and **\<Image>**, are not focusable by default. Only focusable components can trigger a focus event. To enable a component to be focusable, set its **focusable** attribute to **true**.
 
 
 ## Events
 
 | Name                                  | Bubbling Supported| Description       |
 | ---------------------------------------- | -------- | --------------- |
-| onFocus(event: () =&gt; void) | No       | Triggered when the current component obtains focus.|
+| onFocus(event: () =&gt; void) | No  | Triggered when the current component obtains focus.|
 | onBlur(event:() =&gt; void)    | No       | Triggered when the current component loses focus.|
 
->  **NOTE**
->
->  The following components support focus events: **\<Button>**, **\<Text>**, **\<Image>**, **\<List>**, and **\<Grid>**.
-
 
 ## Example
 
@@ -27,44 +26,52 @@ A focus event is triggered when the page focus moves between components. It can
 @Entry
 @Component
 struct FocusEventExample {
-  @State textOne: string = ''
-  @State textTwo: string = ''
-  @State textThree: string = ''
-  @State oneButtonColor: string = '#FF0000'
+  @State oneButtonColor: string = '#FFC0CB'
   @State twoButtonColor: string = '#87CEFA'
   @State threeButtonColor: string = '#90EE90'
 
   build() {
-    Column({ space:20 }){
-      Button(this.textOne)
+    Column({ space: 20 }) {
+      // You can use the up and down arrow keys on an external keyboard to move the focus between the three buttons. When a button gains focus, its color changes. When it loses focus, its color changes back.
+      Button('First Button')
         .backgroundColor(this.oneButtonColor)
-        .width(260).height(70).fontColor(Color.Black)
+        .width(260)
+        .height(70)
+        .fontColor(Color.Black)
         .focusable(true)
         .onFocus(() => {
-          this.textOne = 'First Button onFocus'
-          this.oneButtonColor = '#AFEEEE'
+          this.oneButtonColor = '#FF0000'
         })
         .onBlur(() => {
-          this.textOne = 'First Button onBlur'
           this.oneButtonColor = '#FFC0CB'
         })
-      Button(this.textTwo)
+      Button('Second Button')
         .backgroundColor(this.twoButtonColor)
-        .width(260).height(70).fontColor(Color.Black)
+        .width(260)
+        .height(70)
+        .fontColor(Color.Black)
         .focusable(true)
-      Button(this.textThree)
+        .onFocus(() => {
+          this.twoButtonColor = '#FF0000'
+        })
+        .onBlur(() => {
+          this.twoButtonColor = '#87CEFA'
+        })
+      Button('Third Button')
         .backgroundColor(this.threeButtonColor)
-        .width(260).height(70).fontColor(Color.Black)
+        .width(260)
+        .height(70)
+        .fontColor(Color.Black)
         .focusable(true)
         .onFocus(() => {
-          this.textThree = 'Third Button onFocus'
-          this.threeButtonColor = '#AFEEEE'
+          this.threeButtonColor = '#FF0000'
         })
         .onBlur(() => {
-          this.textThree = 'Third Button onBlur'
-          this.threeButtonColor = '#FFC0CB'
+          this.threeButtonColor = '#90EE90'
         })
-    }.width('100%').margin({ top:20 })
+    }.width('100%').margin({ top: 20 })
   }
 }
 ```
+
+ ![focus](figures/focus.png) 
-- 
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