updated docs

Signed-off-by: Nwusongqing <wusongqing@huawei.com>

en/application-dev/reference/apis/js-apis-Context.md

@@ -63,8 +63,8 @@ If this method is called for the first time, a root directory is created.
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getOrCreateLocalDir().then((void) => {
-	console.info("==========================>getOrCreateLocalDirCallback=======================>");
+context.getOrCreateLocalDir().then((data) => {
+    console.info("data=" + data);
 });
 ```
 
@@ -91,9 +91,9 @@ Verifies whether a specific PID and UID have the given permission. This method u
 import featureAbility from '@ohos.ability.featureAbility'
 import bundle from '@ohos.bundle'
 var context = featureAbility.getContext();
-var datainfo = await bundle.getBundleInfo('com.context.test',1);
-context.verifyPermission("com.example.permission",datainfo.uid)
-
+bundle.getBundleInfo('com.context.test', 1, (datainfo) =>{
+	context.verifyPermission("com.example.permission", datainfo.uid);
+});
 ```
 
 
@@ -146,8 +146,9 @@ Verifies whether a specific PID and UID have the given permission. This method u
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
 var Permission = context.PermissionOptions(1,1);
-context.getOrCreateLocalDir('com.context.permission',Permission).then((void) => {
-	console.info("==========================>verifyPermissionCallback=======================>");
+context.verifyPermission('com.context.permission',Permission).then((data) => {
+    console.info("======================>verifyPermissionCallback====================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 
@@ -172,13 +173,16 @@ Requests certain permissions from the system. This method uses a callback to ret
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getOrCreateLocalDir(    
+context.requestPermissionsFromUser(
     ["com.example.permission1",
      "com.example.permission2",
      "com.example.permission3",
      "com.example.permission4",
      "com.example.permission5"],
-    1,
+    1,(err, data)=>{
+        console.info("====>requestdata====>" + JSON.stringify(data));
+        console.info("====>requesterrcode====>" + JSON.stringify(err.code));
+    }
 )
 ```
 
@@ -223,8 +227,9 @@ Obtains information about the current application. This method uses a promise to
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getApplicationInfo().then((void) => {
-	console.info("==========================>getApplicationInfoCallback=======================>");
+context.getApplicationInfo().then((data) => {
+    console.info("=====================>getApplicationInfoCallback===================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 
@@ -269,8 +274,9 @@ Obtains the bundle name of the current ability. This method uses a promise to re
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getBundleName().then((void) => {
-	console.info("==========================>getBundleNameCallback=======================>");
+context.getBundleName().then((data) => {
+    console.info("=======================>getBundleNameCallback====================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 
@@ -315,8 +321,9 @@ Obtains information about the current process, including the PID and process nam
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getProcessInfo().then((void) => {
-	console.info("==========================>getProcessInfoCallback=======================>");
+context.getProcessInfo().then((data) => {
+    console.info("=======================>getProcessInfoCallback====================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 
@@ -365,8 +372,9 @@ This method is available only to Page abilities.
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getElementName().then((void) => {
-	console.info("==========================>getElementNameCallback=======================>");
+context.getElementName().then((data) => {
+    console.info("=======================>getElementNameCallback====================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 
@@ -407,8 +415,9 @@ Obtains the name of the current process. This method uses a promise to return th
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getProcessName().then((void) => {
-	console.info("==========================>getProcessNameCallback=======================>");
+context.getProcessName().then((data) => {
+    console.info("=======================>getProcessNameCallback====================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 
@@ -453,8 +462,9 @@ Obtains the bundle name of the calling ability. This method uses a promise to re
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getCallingBundle().then((void) => {
-	console.info("==========================>getCallingBundleCallback=======================>");
+context.getCallingBundle().then((data) => {
+    console.info("======================>getCallingBundleCallback====================>");
+    console.info("====>data====>" + JSON.stringify(data));
 });
 ```
 

en/application-dev/reference/apis/js-apis-DataUriUtils.md

@@ -27,7 +27,6 @@ Obtains the ID attached to the end of a given URI.
 **Example**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 dataUriUtils.getIdSync("com.example.dataUriUtils/1221")
 ```
 
@@ -55,10 +54,9 @@ Attaches an ID to the end of a given URI.
 **Example**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 var idint = 1122;
 dataUriUtils.attachId(
-    "com.example.dataUriUtils"
+    "com.example.dataUriUtils",
 	idint,
 )
 ```
@@ -85,7 +83,6 @@ Deletes the ID from the end of a given URI.
 **Example**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 dataUriUtils.deleteId("com.example.dataUriUtils/1221")
 ```
 
@@ -112,10 +109,9 @@ Updates the ID in a given URI.
 **Example**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 var idint = 1122;
 dataUriUtils.updateId(
-    "com.example.dataUriUtils"
-	idint,
+    "com.example.dataUriUtils",
+	idint
 )
 ```

en/application-dev/reference/apis/js-apis-service-extension-context.md

 # ServiceExtensionContext
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **Note:**
+> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
 > The initial APIs of this module are supported since API 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
@@ -29,8 +29,8 @@ Starts an ability. This method uses a callback to return the result.
       "abilityName": "com.example.myapp.MyAbility"
   };
   this.context.startAbility(want, (err) => {
-      console.log('startAbility result:' + JSON.stringfy(err);
-  }  
+      console.log('startAbility result:' + JSON.stringfy(err));
+  });
   ```
 
 
@@ -58,7 +58,7 @@ Starts an ability. This method uses a promise to return the result.
   };
   this.context.startAbility(want).then((data) => {
       console.log('success:' + JSON.stringfy(data));
-  )).catch((error) => {
+  }).catch((error) => {
       console.log('failed:' + JSON.stringfy(error));
   });
   ```
@@ -78,8 +78,8 @@ Terminates this ability. This method uses a callback to return the result.
 - Example
   ```
   this.context.terminateSelf((err) => {
-      console.log('terminateSelf result:' + JSON.stringfy(err);
-  }
+      console.log('terminateSelf result:' + JSON.stringfy(err));
+  });
   ```
 
 
@@ -98,7 +98,7 @@ Terminates this ability. This method uses a promise to return the result.
   ```
   this.context.terminateSelf(want).then((data) => {
       console.log('success:' + JSON.stringfy(data));
-  )).catch((error) => {
+  }).catch((error) => {
       console.log('failed:' + JSON.stringfy(error));
   });
   ```
@@ -128,8 +128,8 @@ Connects this ability to a Service ability.
       "abilityName": "com.example.myapp.MyAbility"
   };
   let options = {
-      onConnect: function(elementName, proxy) {}
-      onDisConnect: function(elementName) {}
+      onConnect: function(elementName, proxy) {},
+      onDisConnect: function(elementName) {},
       onFailed: function(code) {}
   }
   let connection = this.context.connectAbility(want,options);
@@ -151,8 +151,8 @@ Disconnects this ability from the Service ability. This method uses a callback t
 - Example
   ```
   this.context.disconnectAbility(connection, (err) => { // connection is the return value of connectAbility.
-      console.log('terminateSelf result:' + JSON.stringfy(err);
-  }
+      console.log('terminateSelf result:' + JSON.stringfy(err));
+  });
   ```
 
 
@@ -176,7 +176,7 @@ Disconnects this ability from the Service ability. This method uses a promise to
   ```
   this.context.disconnectAbility(connection).then((data) => { // connection is the return value of connectAbility.
       console.log('success:' + JSON.stringfy(data));
-  )).catch((error) => {
+  }).catch((error) => {
       console.log('failed:' + JSON.stringfy(error));
   });
   ```

en/application-dev/reference/apis/js-apis-service-extension.md

 # ServiceExtension
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **Note:**
+> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
 > The initial APIs of this module are supported since API 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
@@ -39,9 +39,11 @@ Called when an extension is created to initialize the service logic.
 
 - Example
   ```
+  class ServiceExt extends ServiceExtension {
     onCreate(want) {
       console.log('onCreate, want:' + want.abilityName);
     }
+  }
   ```
 
 
@@ -53,9 +55,10 @@ Called when this extension is destroyed to clear resources.
 
 - Example
   ```
+  class ServiceExt extends ServiceExtension {
     onDestroy() {
       console.log('onDestroy');
-      destory();
+    }
   }
   ```
 
@@ -74,9 +77,11 @@ Called after **onCreate** is invoked when an ability is started by calling **sta
 
 - Example
   ```
-  onRequest(want: Want, startId: number) {
+  class ServiceExt extends ServiceExtension {
+    onRequest(want, startId) {
       console.log('onRequest, want:' + want.abilityName);
     }
+  }
   ```
 
 
@@ -106,11 +111,12 @@ Called after **onCreate** is invoked when an ability is started by calling **con
       onRemoteRequest(code, data, reply, option) {
       }
   }
-  ...
+  class ServiceExt extends ServiceExtension {
     onConnect(want) {
       console.log('onConnect , want:' + want.abilityName);
       return new StubTest("test");
     }
+  }
   ```
 
 
@@ -127,7 +133,9 @@ Called when the ability is disconnected.
 
 - Example
   ```
+  class ServiceExt extends ServiceExtension {
     onDisconnect(want) {
       console.log('onDisconnect, want:' + want.abilityName);
     }
+  }
   ```

zh-cn/application-dev/reference/apis/js-apis-dataAbilityHelper.md

@@ -44,6 +44,8 @@ DAHelper.openFile(
 
 openFile(uri: string, mode: string): Promise\<number>
 
+在指定的远程路径中打开文件（promise形式）。
+
 **参数：**
 
 | 名称 | 类型   | 必填 | 描述                     |
@@ -270,7 +272,7 @@ normalizeUri(uri: string, callback: AsyncCallback\<string>): void
 | 名称     | 类型                   | 必填 | 描述                                                         |
 | -------- | ---------------------- | ---- | ------------------------------------------------------------ |
 | uri      | string                 | 是   | 指示要规范化的uri对象。                                      |
-| callback | AsyncCallback\<string> | 是   | 回调方法。如果数据功能支持uri规范化或null，则返回规范化uri对象。 |
+| callback | AsyncCallback\<string> | 是   | 回调方法。如果数据功能支持uri规范化，则返回规范化uri对象；否则返回null。 |
 
 **示例：**
 
@@ -301,7 +303,7 @@ normalizeUri(uri: string): Promise\<string>
 **返回值：**
 | 类型             | 说明                                                   |
 | ---------------- | ------------------------------------------------------ |
-| Promise\<string> | 如果数据功能支持uri规范化或null，则返回规范化uri对象。 |
+| Promise\<string> | 如果数据功能支持uri规范化，则返回规范化uri对象；否则返回null。 |
 
 **示例：**
 
@@ -698,7 +700,7 @@ update(uri: string, valuesBucket: rdb.ValuesBucket, predicates: dataAbility.Data
 **返回值：**
 | 类型             | 说明                                         |
 | ---------------- | -------------------------------------------- |
-| Promise\<number> | 返回值为Promise对象，Promise中包含应用信息。 |
+| Promise\<number> | 返回更新的数据记录数。 |
 
 **示例：**