diff --git a/zh-cn/application-dev/reference/apis/js-apis-Context.md b/zh-cn/application-dev/reference/apis/js-apis-Context.md
index b311ada819abc5e589723353b7c28ab7f023d188..f952f242e1da5b04fa7a6a99d5839b8cfb31f2d3 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-Context.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-Context.md
@@ -63,7 +63,7 @@ getOrCreateLocalDir(): Promise\<string>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getOrCreateLocalDir().then((void) => {
+context.getOrCreateLocalDir().then(() => {
 	console.info("==========================>getOrCreateLocalDirCallback=======================>");
 });
 ```
@@ -91,9 +91,9 @@ verifyPermission(permission: string, options: PermissionOptions, callback: Async
 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);
+});
 ```
 
 
@@ -146,7 +146,7 @@ verifyPermission(permission: string, options?: PermissionOptions): Promise\<numb
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
 var Permission = context.PermissionOptions(1,1);
-context.getOrCreateLocalDir('com.context.permission',Permission).then((void) => {
+context.getOrCreateLocalDir('com.context.permission',Permission).then(() => {
 	console.info("==========================>verifyPermissionCallback=======================>");
 });
 ```
@@ -223,7 +223,7 @@ getApplicationInfo(): Promise\<ApplicationInfo>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getApplicationInfo().then((void) => {
+context.getApplicationInfo().then(() => {
 	console.info("==========================>getApplicationInfoCallback=======================>");
 });
 ```
@@ -269,7 +269,7 @@ getBundleName(): Promise\<string>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getBundleName().then((void) => {
+context.getBundleName().then(() => {
 	console.info("==========================>getBundleNameCallback=======================>");
 });
 ```
@@ -315,7 +315,7 @@ getProcessInfo(): Promise\<ProcessInfo>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getProcessInfo().then((void) => {
+context.getProcessInfo().then(() => {
 	console.info("==========================>getProcessInfoCallback=======================>");
 });
 ```
@@ -365,7 +365,7 @@ getElementName(): Promise\<ElementName>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getElementName().then((void) => {
+context.getElementName().then(() => {
 	console.info("==========================>getElementNameCallback=======================>");
 });
 ```
@@ -407,7 +407,7 @@ getProcessName(): Promise\<string>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getProcessName().then((void) => {
+context.getProcessName().then(() => {
 	console.info("==========================>getProcessNameCallback=======================>");
 });
 ```
@@ -453,7 +453,7 @@ getCallingBundle(): Promise\<string>
 ```js
 import featureAbility from '@ohos.ability.featureAbility'
 var context = featureAbility.getContext();
-context.getCallingBundle().then((void) => {
+context.getCallingBundle().then(() => {
 	console.info("==========================>getCallingBundleCallback=======================>");
 });
 ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-DataUriUtils.md b/zh-cn/application-dev/reference/apis/js-apis-DataUriUtils.md
index b58eef3c1d324d4c09d4e109c8b7587f5aa50a44..232d333a0af21162ab508eed5c637d829bbc1aa1 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-DataUriUtils.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-DataUriUtils.md
@@ -27,7 +27,6 @@ getId(uri: string): number
 **示例：**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 dataUriUtils.getIdSync("com.example.dataUriUtils/1221")
 ```
 
@@ -55,10 +54,9 @@ attachId(uri: string, id: number): string
 **示例：**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 var idint = 1122;
 dataUriUtils.attachId(
-    "com.example.dataUriUtils"
+    "com.example.dataUriUtils",
 	idint,
 )
 ```
@@ -85,7 +83,6 @@ deleteId(uri: string): string
 **示例：**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 dataUriUtils.deleteId("com.example.dataUriUtils/1221")
 ```
 
@@ -112,11 +109,10 @@ updateId(uri: string, id: number): string
 **示例：**
 
 ```js
-import dataUriUtils from '@ohos.ability.datauriutils'
 var idint = 1122;
 dataUriUtils.updateId(
-    "com.example.dataUriUtils"
-	idint,
+    "com.example.dataUriUtils",
+	idint
 )
 ```
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-ability-context.md b/zh-cn/application-dev/reference/apis/js-apis-ability-context.md
index 01212e408ae64aaff2a039770d006e7e4b1188a9..020beeb11908edf8cb8f32d6671add43815ba698 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-ability-context.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-ability-context.md
@@ -137,8 +137,8 @@ terminateSelf(callback: AsyncCallback&lt;void&gt;): void;
 - 示例：
   ```
   this.context.terminateSelf((err) => {
-      console.log('terminateSelf result:' + JSON.stringfy(err);
-  }
+      console.log('terminateSelf result:' + JSON.stringfy(err));
+  });
   ```
 
 
@@ -157,7 +157,7 @@ terminateSelf(): Promise&lt;void&gt;;
   ```
   this.context.terminateSelf(want).then((data) => {
       console.log('success:' + JSON.stringfy(data));
-  )).catch((error) => {
+  }).catch((error) => {
       console.log('failed:' + JSON.stringfy(error));
   });
   ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-dataAbilityHelper.md b/zh-cn/application-dev/reference/apis/js-apis-dataAbilityHelper.md
index faacbf73949124197205b3cf50bf22e81e840dca..3c0e4627e4c8d0a1fabf9498df7eee99ebb4355e 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-dataAbilityHelper.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-dataAbilityHelper.md
@@ -65,8 +65,8 @@ var DAHelper = featureAbility.acquireDataAbilityHelper(
 );
 var mode = "rwt";
 DAHelper.openFile(
-    "dataability:///com.example.DataAbility"，
-    mode).then((void) => {
+    "dataability:///com.example.DataAbility",
+    mode).then((data) => {
 		console.info("==========================>openFileCallback=======================>");
 });
 ```
@@ -338,7 +338,7 @@ var DAHelper = featureAbility.acquireDataAbilityHelper(
     "dataability:///com.example.DataAbility"
 );
 DAHelper.denormalizeUri(
-    "dataability:///com.example.DataAbility",,
+    "dataability:///com.example.DataAbility",
     (err, data) => {
 		console.info("==========================>Called=======================>");
 });
@@ -398,7 +398,7 @@ var helper = featureAbility.acquireDataAbilityHelper(
     "dataability:///com.example.DataAbility"
 );
 helper.notifyChange(
-    "dataability:///com.example.DataAbility",,
+    "dataability:///com.example.DataAbility",
     (err) => {
 		console.info("==========================>Called=======================>");
 });
@@ -430,7 +430,7 @@ var DAHelper = featureAbility.acquireDataAbilityHelper(
 );
 DAHelper.notifyChange(
     "dataability:///com.example.DataAbility",
-	).then((void) => {
+	).then(() => {
 		console.info("==========================>notifyChangeCallback=======================>");
 });
 ```
@@ -747,7 +747,7 @@ import ohos_data_ability from '@ohos.data.dataability'
 var DAHelper = featureAbility.acquireDataAbilityHelper(
     "dataability:///com.example.DataAbility"
 );
-var cars=new Array({"value1"}, {"value2"}, {"value3"}, {"value4"});
+var cars=new Array("value1", "value2", "value3", "value4");
 let da = new ohos_data_ability.DataAbilityPredicates()
 DAHelper.query(
     "dataability:///com.example.DataAbility",
@@ -787,7 +787,7 @@ import ohos_data_ability from '@ohos.data.dataability'
 var DAHelper = featureAbility.acquireDataAbilityHelper(
     "dataability:///com.example.DataAbility"
 );
-var cars=new Array({"value1"}, {"value2"}, {"value3"}, {"value4"});
+var cars=new Array("value1", "value2", "value3", "value4");
 let da = new ohos_data_ability.DataAbilityPredicates()
 DAHelper.query(
     "dataability:///com.example.DataAbility",
diff --git a/zh-cn/application-dev/reference/apis/js-apis-particleAbility.md b/zh-cn/application-dev/reference/apis/js-apis-particleAbility.md
index 99b740b29f4ff715181bb2806d6ccf97cc17cc5c..5b4745b916a1e4db6792c21266911459aca974bf 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-particleAbility.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-particleAbility.md
@@ -28,6 +28,7 @@ startAbility(parameter: StartAbilityParameter, callback: AsyncCallback\<void>: v
 
 ```js
 import particleAbility from '@ohos.ability.particleAbility'
+import wantConstant from "@ohos.ability.wantConstant"
 particleAbility.startAbility(
 	{
         want:
@@ -35,7 +36,7 @@ particleAbility.startAbility(
             action: "action.system.home",
             entities: ["entity.system.home"],
             type: "MIMETYPE",
-            flags: FLAG_AUTH_READ_URI_PERMISSION;
+            flags: wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION,
             deviceId: "",
             bundleName: "com.example.Data",
             abilityName: "com.example.Data.MainAbility",
@@ -70,6 +71,7 @@ startAbility(parameter: StartAbilityParameter): Promise\<number>
 
 ```js
 import particleAbility from '@ohos.ability.particleAbility'
+import wantConstant from "@ohos.ability.wantConstant"
 particleAbility.startAbility(
 	{
         want:
@@ -77,14 +79,14 @@ particleAbility.startAbility(
             action: "action.system.home",
             entities: ["entity.system.home"],
             type: "MIMETYPE",
-            flags: FLAG_AUTH_READ_URI_PERMISSION;
+            flags: wantConstant.Flags.FLAG_AUTH_READ_URI_PERMISSION,
             deviceId: "",
             bundleName: "com.example.Data",
-            abilityName: "com.example.Data.MainAbility",
+            abilityName: "com.example. Data.MainAbility",
             uri:""
         },
     },
-).then((void) => {
+).then(() => {
     console.info("particleAbility startAbility");
 });
 ```
@@ -131,7 +133,7 @@ terminateSelf(): Promise\<void>
 
 ```js
 import particleAbility from '@ohos.ability.particleAbility'
-particleAbility.terminateSelf().then((void) => {
+particleAbility.terminateSelf().then(() => {
 	console.info("particleAbility terminateSelf");
 });
 ```
@@ -195,7 +197,7 @@ connectAbility(request: Want, options:ConnectOptions): number
 ```javascript
 import particleAbility from '@ohos.ability.particleAbility'
 function onConnectCallback(element, remote){
-    console.log('ConnectAbility onConnect remote is proxy:' + (remote instanceof rpc.RemoteProxy));
+    console.log('ConnectAbility onConnectCallback');
 }
 function onDisconnectCallback(element){
     console.log('ConnectAbility onDisconnect element.deviceId : ' + element.deviceId)
@@ -234,7 +236,7 @@ disconnectAbility(connection: number, callback:AsyncCallback\<void>): void
 ```javascript
 import particleAbility from '@ohos.ability.particleAbility'
 function onConnectCallback(element, remote){
-    console.log('ConnectAbility onConnect remote is proxy:' + (remote instanceof rpc.RemoteProxy));
+    console.log('ConnectAbility onConnectCallback');
 }
 function onDisconnectCallback(element){
     console.log('ConnectAbility onDisconnect element.deviceId : ' + element.deviceId)
@@ -255,8 +257,8 @@ var connId = particleAbility.connectAbility(
 );
 var result = particleAbility.disconnectAbility(connId,
     (error,data) => {
-        console.log('particleAbilityTest DisConnectAbility result errCode : ' + error.code + " data: " + data)
-    },
+        console.log('particleAbilityTest DisConnectAbility result errCode : ' + error.code + " data: " + data);
+    }
 );
 ```
 
@@ -282,7 +284,7 @@ disconnectAbility(connection: number): Promise\<void>
 ```javascript
 import particleAbility from '@ohos.ability.particleAbility'
 function onConnectCallback(element, remote){
-    console.log('ConnectAbility onConnect remote is proxy:' + (remote instanceof rpc.RemoteProxy));
+    console.log('ConnectAbility onConnect onConnectCallback');
 }
 function onDisconnectCallback(element){
     console.log('ConnectAbility onDisconnect element.deviceId : ' + element.deviceId)
@@ -301,7 +303,7 @@ var connId = particleAbility.connectAbility(
         onFailed: onFailedCallback,
     },
 );
-var result = particleAbility.disconnectAbility(connId).then((void) => {
+var result = particleAbility.disconnectAbility(connId).then(() => {
 	console.info("particleAbilityTest disconnectAbility");
 });
 ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-service-extension-context.md b/zh-cn/application-dev/reference/apis/js-apis-service-extension-context.md
index 7d1f53d40fb9beed30fe9db79df511d3393e8c93..9df9866c2cd51d00b76c2bd3b72809a483629bbb 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-service-extension-context.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-service-extension-context.md
@@ -29,8 +29,8 @@ startAbility(want: Want, callback: AsyncCallback&lt;void&gt;): void;
       "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 @@ startAbility(want: Want): Promise&lt;void&gt;;
   };
   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 @@ terminateSelf(callback: AsyncCallback&lt;void&gt;): void;
 - 示例：
   ```
   this.context.terminateSelf((err) => {
-      console.log('terminateSelf result:' + JSON.stringfy(err);
-  }
+      console.log('terminateSelf result:' + JSON.stringfy(err));
+  });
   ```
 
 
@@ -98,7 +98,7 @@ terminateSelf(): Promise&lt;void&gt;;
   ```
   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 @@ connectAbility(want: Want, options: ConnectOptions): number;
       "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 @@ disconnectAbility(connection: number, callback:AsyncCallback&lt;void&gt;): void;
 - 示例：
   ```
   this.context.disconnectAbility(connection, (err) => { // connection为connectAbility中的返回值
-      console.log('terminateSelf result:' + JSON.stringfy(err);
-  }
+      console.log('terminateSelf result:' + JSON.stringfy(err));
+  });
   ```
 
 
@@ -176,7 +176,7 @@ disconnectAbility(connection: number): Promise&lt;void&gt;;
   ```
   this.context.disconnectAbility(connection).then((data) => { // connection为connectAbility中的返回值
       console.log('success:' + JSON.stringfy(data));
-  )).catch((error) => {
+  }).catch((error) => {
       console.log('failed:' + JSON.stringfy(error));
   });
   ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-service-extension.md b/zh-cn/application-dev/reference/apis/js-apis-service-extension.md
index d01d181e57131249f3917f50c7e285aeb076951e..4084b560e9ebed38d7be22ebf75285723e1a80da 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-service-extension.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-service-extension.md
@@ -39,8 +39,10 @@ Extension生命周期回调，在创建时回调，执行初始化业务逻辑
 
 - 示例：
   ```
-  onCreate(want) {
+  class ServiceExt extends ServiceExtension {
+    onCreate(want) {
       console.log('onCreate, want:' + want.abilityName);
+    }
   }
   ```
 
@@ -53,9 +55,10 @@ Extension生命周期回调，在销毁时回调，执行资源清理等操作
 
 - 示例：
   ```
-  onDestroy() {
+  class ServiceExt extends ServiceExtension {
+    onDestroy() {
       console.log('onDestroy');
-      destory();
+    }
   }
   ```
 
@@ -74,8 +77,10 @@ Extension生命周期回调，如果是startAbility拉起的服务，会在onCre
 
 - 示例：
   ```
-  onRequest(want: Want, startId: number) {
+  class ServiceExt extends ServiceExtension {
+    onRequest(want, startId) {
       console.log('onRequest, want:' + want.abilityName);
+    }
   }
   ```
 
@@ -106,10 +111,11 @@ Extension生命周期回调，如果是connectAbility拉起的服务，会在onC
       onRemoteRequest(code, data, reply, option) {
       }
   }
-  ...
-  onConnect(want) {
+  class ServiceExt extends ServiceExtension {
+    onConnect(want) {
       console.log('onConnect , want:' + want.abilityName);
       return new StubTest("test");
+    }
   }
   ```
 
@@ -127,7 +133,9 @@ Extension的生命周期，断开服务连接时回调。
 
 - 示例：
   ```
-  onDisconnect(want) {
+  class ServiceExt extends ServiceExtension {
+    onDisconnect(want) {
       console.log('onDisconnect, want:' + want.abilityName);
+    }
   }
   ```