diff --git a/zh-cn/application-dev/reference/apis/js-apis-backgroundTaskManager.md b/zh-cn/application-dev/reference/apis/js-apis-backgroundTaskManager.md
index 3284f0899bdf2e2f3c3a269f349c8383184a923a..51c857fc8bfc18b193f5121c2c51e739ca757f65 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-backgroundTaskManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-backgroundTaskManager.md
@@ -17,7 +17,7 @@
 
 ## 导入模块
 
-```js
+```ts
 import backgroundTaskManager from '@ohos.backgroundTaskManager';  
 ```
 
@@ -47,7 +47,7 @@ requestSuspendDelay(reason: string, callback: Callback<void>): DelaySuspen
 
 **示例**：
 
-  ```js
+  ```ts
   import backgroundTaskManager from '@ohos.backgroundTaskManager';
 
   let myReason = 'test requestSuspendDelay';
@@ -79,11 +79,11 @@ getRemainingDelayTime(requestId: number, callback: AsyncCallback<number>):
 
 **示例**：
 
-  ```js
+  ```ts
   import backgroundTaskManager from '@ohos.backgroundTaskManager';
 
   let delayInfo = backgroundTaskManager.requestSuspendDelay("test", () => {});
-  backgroundTaskManager.getRemainingDelayTime(delayInfo.requestId, (err, res) => {
+  backgroundTaskManager.getRemainingDelayTime(delayInfo.requestId, (err: BusinessError, res: number) => {
       if(err) {
           console.log('callback => Operation getRemainingDelayTime failed. Cause: ' + err.code);
       } else {
@@ -115,7 +115,7 @@ getRemainingDelayTime(requestId: number): Promise<number>
 
 **示例**：
 
-```js
+```ts
 let delayInfo = backgroundTaskManager.requestSuspendDelay("test", () => {});
     backgroundTaskManager.getRemainingDelayTime(delayInfo.requestId).then((res:number) => {
     console.log('promise => Operation getRemainingDelayTime succeeded. Data: ' + JSON.stringify(res));
@@ -141,7 +141,7 @@ cancelSuspendDelay(requestId: number): void
 
 **示例**：
 
-  ```js
+  ```ts
   let delayInfo = backgroundTaskManager.requestSuspendDelay("test", () => {});
   backgroundTaskManager.cancelSuspendDelay(delayInfo.requestId);
   ```
@@ -267,7 +267,7 @@ startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: Want
 
 **示例**：
 
-FA模型示例：
+FA模型示例（需使用js代码开发）：
 
 ```js
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
@@ -348,7 +348,7 @@ stopBackgroundRunning(context: Context, callback: AsyncCallback<void>): vo
 
 **示例**：
 
-FA模型示例：
+FA模型示例（需使用js代码开发）：
 
 ```js
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
diff --git a/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-backgroundTaskManager.md b/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-backgroundTaskManager.md
index 8232aa366630f12ff418d461f01b8ed3c58b428d..9fbbd64c6308c7fe1d5fd3ff005397f76e38548f 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-backgroundTaskManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-backgroundTaskManager.md
@@ -9,7 +9,7 @@
 
 ## 导入模块
 
-```js
+```ts
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
 ```
 
@@ -53,22 +53,23 @@ requestSuspendDelay(reason: string, callback: Callback<void>): DelaySuspen
 
 **示例**：
 
-  ```js
-  import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+```ts
+import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+import { BusinessError } from '@ohos.base';
 
-  let myReason = 'test requestSuspendDelay';
-  try {
-    let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, () => {
-        console.info("Request suspension delay will time out.");
-    })
-    let id = delayInfo.requestId;
-    let time = delayInfo.actualDelayTime;
-    console.info("The requestId is: " + id);
-    console.info("The actualDelayTime is: " + time);
-  } catch (error) {
-    console.error(`requestSuspendDelay failed. code is ${error.code} message is ${error.message}`);
-  }
-  ```
+let myReason = 'test requestSuspendDelay';
+try {
+let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, () => {
+    console.info("Request suspension delay will time out.");
+})
+let id = delayInfo.requestId;
+let time = delayInfo.actualDelayTime;
+console.info("The requestId is: " + id);
+console.info("The actualDelayTime is: " + time);
+} catch (error) {
+console.error(`requestSuspendDelay failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
+}
+```
 
 
 ## backgroundTaskManager.getRemainingDelayTime
@@ -102,22 +103,19 @@ getRemainingDelayTime(requestId: number, callback: AsyncCallback<number>):
 
 **示例**：
 
-  ```js
-  import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+```ts
+import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+import { BusinessError } from '@ohos.base';
 
-  let id = 1;
-  try {
-    backgroundTaskManager.getRemainingDelayTime(id, (error, res) => {
-        if(error) {
-            console.error(`callback => Operation getRemainingDelayTime failed. code is ${error.code} message is ${error.message}`);
-        } else {
-            console.log('callback => Operation getRemainingDelayTime succeeded. Data: ' + JSON.stringify(res));
-        }
-    })
-  } catch (error) {
-    console.error(`callback => Operation getRemainingDelayTime failed. code is ${error.code} message is ${error.message}`);
-  }
-  ```
+let id = 1;
+backgroundTaskManager.getRemainingDelayTime(id, (error: BusinessError, res: number) => {
+    if(error) {
+        console.error(`callback => Operation getRemainingDelayTime failed. code is ${error.code} message is ${error.message}`);
+    } else {
+        console.log('callback => Operation getRemainingDelayTime succeeded. Data: ' + JSON.stringify(res));
+    }
+})
+```
 
 
 ## backgroundTaskManager.getRemainingDelayTime
@@ -155,20 +153,17 @@ getRemainingDelayTime(requestId: number): Promise<number>
 
 **示例**：
 
-  ```js
-  import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+```ts
+import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+import { BusinessError } from '@ohos.base';
 
-  let id = 1;
-  try {
-    backgroundTaskManager.getRemainingDelayTime(id).then( res => {
-        console.log('promise => Operation getRemainingDelayTime succeeded. Data: ' + JSON.stringify(res));
-    }).catch( error => {
-        console.error(`promise => Operation getRemainingDelayTime failed. code is ${error.code} message is ${error.message}`);
-    })
-  } catch (error) {
+let id = 1;
+backgroundTaskManager.getRemainingDelayTime(id).then((res: number) => {
+    console.log('promise => Operation getRemainingDelayTime succeeded. Data: ' + JSON.stringify(res));
+}).catch((error: BusinessError) => {
     console.error(`promise => Operation getRemainingDelayTime failed. code is ${error.code} message is ${error.message}`);
-  }
-  ```
+})
+```
 
 
 ## backgroundTaskManager.cancelSuspendDelay
@@ -202,12 +197,13 @@ cancelSuspendDelay(requestId: number): void
 
   ```js
   import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+  import { BusinessError } from '@ohos.base';
 
   let id = 1;
   try {
     backgroundTaskManager.cancelSuspendDelay(id);
   } catch (error) {
-    console.error(`cancelSuspendDelay failed. code is ${error.code} message is ${error.message}`);
+    console.error(`cancelSuspendDelay failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
   }
   ```
 
@@ -249,9 +245,10 @@ startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: Want
 ```js
 import UIAbility from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
-import wantAgent from '@ohos.app.ability.wantAgent';
+import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
+import { BusinessError } from '@ohos.base';
 
-function callback(error, data) {
+function callback(error: BusinessError, data: void) {
     if (error) {
         console.error(`Operation startBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
     } else {
@@ -260,8 +257,8 @@ function callback(error, data) {
 }
 
 export default class EntryAbility extends UIAbility {
-    onCreate(want, launchParam) {
-        let wantAgentInfo = {
+    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
+        let wantAgentInfo: wantAgent.WantAgentInfo = {
             wants: [
                 {
                     bundleName: "com.example.myapplication",
@@ -274,16 +271,16 @@ export default class EntryAbility extends UIAbility {
         };
 
         try {
-            wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => {
+            wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
                 try {
                     backgroundTaskManager.startBackgroundRunning(this.context,
                         backgroundTaskManager.BackgroundMode.LOCATION, wantAgentObj, callback)
                 } catch (error) {
-                    console.error(`Operation startBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
+                    console.error(`Operation startBackgroundRunning failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
                 }
             });
         } catch (error) {
-            console.error(`Operation getWantAgent failed. code is ${error.code} message is ${error.message}`);
+            console.error(`Operation getWantAgent failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
         }
     }
 };
@@ -332,11 +329,12 @@ startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: Want
 ```js
 import UIAbility from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager'; 
-import wantAgent from '@ohos.app.ability.wantAgent';
+import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
+import { BusinessError } from '@ohos.base';
 
 export default class EntryAbility extends UIAbility {
-    onCreate(want, launchParam) {
-        let wantAgentInfo = {
+    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
+        let wantAgentInfo: wantAgent.WantAgentInfo = {
             wants: [
                 {
                     bundleName: "com.example.myapplication",
@@ -349,20 +347,20 @@ export default class EntryAbility extends UIAbility {
         };
 
         try {
-            wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => {
+            wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
                 try {
                     backgroundTaskManager.startBackgroundRunning(this.context,
                         backgroundTaskManager.BackgroundMode.LOCATION, wantAgentObj).then(() => {
                         console.info("Operation startBackgroundRunning succeeded");
-                    }).catch((error) => {
+                    }).catch((error: BusinessError) => {
                         console.error(`Operation startBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
                     });
                 } catch (error) {
-                    console.error(`Operation startBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
+                    console.error(`Operation startBackgroundRunning failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
                 }
             });
         } catch (error) {
-            console.error(`Operation getWantAgent failed. code is ${error.code} message is ${error.message}`);
+            console.error(`Operation getWantAgent failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
         }
     }
 };
@@ -402,8 +400,9 @@ stopBackgroundRunning(context: Context, callback: AsyncCallback<void>): vo
 ```js
 import UIAbility from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+import { BusinessError } from '@ohos.base';
 
-function callback(error, data) {
+function callback(error: BusinessError, data: void) {
     if (error) {
         console.error(`Operation stopBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
     } else {
@@ -412,11 +411,11 @@ function callback(error, data) {
 }
 
 export default class EntryAbility extends UIAbility {
-    onCreate(want, launchParam) {
+    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
         try {
             backgroundTaskManager.stopBackgroundRunning(this.context, callback);
         } catch (error) {
-            console.error(`Operation stopBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
+            console.error(`Operation stopBackgroundRunning failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
         }
     }
 };
@@ -461,17 +460,18 @@ stopBackgroundRunning(context: Context): Promise<void>
 ```js
 import UIAbility from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+import { BusinessError } from '@ohos.base';
 
 export default class EntryAbility extends UIAbility {
-    onCreate(want, launchParam) {
+    onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
         try {
             backgroundTaskManager.stopBackgroundRunning(this.context).then(() => {
                 console.info("Operation stopBackgroundRunning succeeded");
-            }).catch((error) => {
+            }).catch((error: BusinessError) => {
                 console.error(`Operation stopBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
             });
         } catch (error) {
-            console.error(`Operation stopBackgroundRunning failed. code is ${error.code} message is ${error.message}`);
+            console.error(`Operation stopBackgroundRunning failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
         }
     }
 };
@@ -510,8 +510,9 @@ applyEfficiencyResources(request: EfficiencyResourcesRequest): void
 
 ```js
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
+import { BusinessError } from '@ohos.base';
 
-let request = {
+let request: backgroundTaskManager.EfficiencyResourcesRequest = {
     resourceTypes: backgroundTaskManager.ResourceType.CPU,
     isApply: true,
     timeOut: 0,
@@ -523,7 +524,7 @@ try {
     backgroundTaskManager.applyEfficiencyResources(request);
     console.info("applyEfficiencyResources success. ");
 } catch (error) {
-    console.error(`applyEfficiencyResources failed. code is ${error.code} message is ${error.message}`);
+    console.error(`applyEfficiencyResources failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
 }
 ```
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-workScheduler.md b/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-workScheduler.md
index 70a2c5ef5456631a403c756e9a2fdfae38194897..4cf176b101a9191d34825cae2657aa0291dfd612 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-workScheduler.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-workScheduler.md
@@ -10,7 +10,7 @@
 
 ## 导入模块
 
-```js
+```ts
 import workScheduler from '@ohos.resourceschedule.workScheduler';
 ```
 
@@ -42,8 +42,8 @@ startWork(work: WorkInfo): void
 
 **示例**：
 
-```js
-  let workInfo = {
+```ts
+  let workInfo: workScheduler.WorkInfo = {
       workId: 1,
       batteryStatus:workScheduler.BatteryStatus.BATTERY_STATUS_LOW,
       isRepeat: false,
@@ -61,7 +61,7 @@ startWork(work: WorkInfo): void
     workScheduler.startWork(workInfo);
     console.info('workschedulerLog startWork success');
   } catch (error) {
-    console.error(`workschedulerLog startwork failed. code is ${error.code} message is ${error.message}`);
+    console.error(`workschedulerLog startwork failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
   }
 ```
 
@@ -93,8 +93,8 @@ stopWork(work: WorkInfo, needCancel?: boolean): void
 
 **示例**：
 
-```js
-  let workInfo = {
+```ts
+  let workInfo: workScheduler.WorkInfo = {
       workId: 1,
       batteryStatus:workScheduler.BatteryStatus.BATTERY_STATUS_LOW,
       isRepeat: false,
@@ -112,7 +112,7 @@ stopWork(work: WorkInfo, needCancel?: boolean): void
     workScheduler.stopWork(workInfo, false);
     console.info('workschedulerLog stopWork success');
   } catch (error) {
-    console.error(`workschedulerLog stopWork failed. code is ${error.code} message is ${error.message}`);
+    console.error(`workschedulerLog stopWork failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
   }
 ```
 
@@ -144,20 +144,14 @@ getWorkStatus(workId: number, callback : AsyncCallback\<WorkInfo>): void
 
 **示例**：
 
-```js
-  try{
-    workScheduler.getWorkStatus(50, (error, res) => {
-      if (error) {
-        console.error(`workschedulerLog getWorkStatus failed. code is ${error.code} message is ${error.message}`);
-      } else {
-        for (let item in res) {
-          console.info(`workschedulerLog getWorkStatus success, ${item} is: ${res[item]}`);
-        }
-      }
-    });
-  } catch (error) {
-    console.error(`workschedulerLog getWorkStatus failed. code is ${error.code} message is ${error.message}`);
-  }
+```ts
+  workScheduler.getWorkStatus(50, (error: BusinessError, res: workScheduler.WorkInfo) => {
+    if (error) {
+      console.error(`workschedulerLog getWorkStatus failed. code is ${error.code} message is ${error.message}`);
+    } else {
+      console.info(`workschedulerLog getWorkStatus success, ${JSON.stringify(res)}`);
+    }
+  });
 ```
 
 ## workScheduler.getWorkStatus
@@ -193,18 +187,12 @@ getWorkStatus(workId: number): Promise\<WorkInfo>
 
 **示例**：
 
-```js
-  try{
-    workScheduler.getWorkStatus(50).then((res) => {
-      for (let item in res) {
-        console.info(`workschedulerLog getWorkStatus success, ${item} is: ${res[item]}`);
-      }
-    }).catch((error) => {
-      console.error(`workschedulerLog getWorkStatus failed. code is ${error.code} message is ${error.message}`);
-    })
-  } catch (error) {
+```ts
+  workScheduler.getWorkStatus(50).then((res: workScheduler.WorkInfo) => {
+    console.info(`workschedulerLog getWorkStatus success, ${JSON.stringify(res)}`);
+  }).catch((error: BusinessError) => {
     console.error(`workschedulerLog getWorkStatus failed. code is ${error.code} message is ${error.message}`);
-  }
+  })
 ```
 
 ## workScheduler.obtainAllWorks
@@ -239,18 +227,14 @@ obtainAllWorks(callback : AsyncCallback\<void>): Array\<WorkInfo>
 
 **示例**：
 
-```js
-  try{
-    workScheduler.obtainAllWorks((error, res) =>{
-      if (error) {
-        console.error(`workschedulerLog obtainAllWorks failed. code is ${error.code} message is ${error.message}`);
-      } else {
-        console.info(`workschedulerLog obtainAllWorks success, data is: ${JSON.stringify(res)}`);
-      }
-    });
-  } catch (error) {
-    console.error(`workschedulerLog obtainAllWorks failed. code is ${error.code} message is ${error.message}`);
-  }
+```ts
+  workScheduler.obtainAllWorks((error: BusinessError, res: Array<workScheduler.WorkInfo>) =>{
+    if (error) {
+      console.error(`workschedulerLog obtainAllWorks failed. code is ${error.code} message is ${error.message}`);
+    } else {
+      console.info(`workschedulerLog obtainAllWorks success, data is: ${JSON.stringify(res)}`);
+    }
+  });
 ```
 
 ## workScheduler.obtainAllWorks
@@ -279,16 +263,12 @@ obtainAllWorks(): Promise\<Array\<WorkInfo>>
 
 **示例**：
 
-```js
-  try{
-    workScheduler.obtainAllWorks().then((res) => {
-      console.info(`workschedulerLog obtainAllWorks success, data is: ${JSON.stringify(res)}`);
-    }).catch((error) => {
-      console.error(`workschedulerLog obtainAllWorks failed. code is ${error.code} message is ${error.message}`);
-    })
-  } catch (error) {
+```ts
+  workScheduler.obtainAllWorks().then((res: Array<workScheduler.WorkInfo>) => {
+    console.info(`workschedulerLog obtainAllWorks success, data is: ${JSON.stringify(res)}`);
+  }).catch((error: BusinessError) => {
     console.error(`workschedulerLog obtainAllWorks failed. code is ${error.code} message is ${error.message}`);
-  }
+  })
 ```
 
 ## workScheduler.stopAndClearWorks
@@ -311,12 +291,12 @@ stopAndClearWorks(): void
 
 **示例**：
 
-```js
+```ts
   try{
     workScheduler.stopAndClearWorks();
     console.info(`workschedulerLog stopAndClearWorks success`);
   } catch (error) {
-    console.error(`workschedulerLog stopAndClearWorks failed. code is ${error.code} message is ${error.message}`);
+    console.error(`workschedulerLog stopAndClearWorks failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
   }
 ```
 
@@ -354,18 +334,14 @@ isLastWorkTimeOut(workId: number, callback : AsyncCallback\<void>): boolean
 
 **示例**：
 
-```js
-  try{
-    workScheduler.isLastWorkTimeOut(500, (error, res) =>{
-      if (error) {
-        console.error(`workschedulerLog isLastWorkTimeOut failed. code is ${error.code} message is ${error.message}`);
-      } else {
-        console.info(`workschedulerLog isLastWorkTimeOut success, data is: ${res}`);
-      }
-    });
-  } catch (error) {
-    console.error(`workschedulerLog isLastWorkTimeOut failed. code is ${error.code} message is ${error.message}`);
-  }
+```ts
+  workScheduler.isLastWorkTimeOut(500, (error: BusinessError, res: boolean) =>{
+    if (error) {
+      console.error(`workschedulerLog isLastWorkTimeOut failed. code is ${error.code} message is ${error.message}`);
+    } else {
+      console.info(`workschedulerLog isLastWorkTimeOut success, data is: ${res}`);
+    }
+  });
 ```
 
 ## workScheduler.isLastWorkTimeOut
@@ -401,18 +377,14 @@ isLastWorkTimeOut(workId: number): Promise\<boolean>
 
 **示例**：
 
-```js
-  try{
-    workScheduler.isLastWorkTimeOut(500)
-      .then(res => {
-        console.info(`workschedulerLog isLastWorkTimeOut success, data is: ${res}`);
-      })
-      .catch(error =>  {
-        console.error(`workschedulerLog isLastWorkTimeOut failed. code is ${error.code} message is ${error.message}`);
-      });
-  } catch (error) {
-    console.error(`workschedulerLog isLastWorkTimeOut failed. code is ${error.code} message is ${error.message}`);
-  }
+```ts
+  workScheduler.isLastWorkTimeOut(500)
+    .then((res: boolean) => {
+      console.info(`workschedulerLog isLastWorkTimeOut success, data is: ${res}`);
+    })
+    .catch((error: BusinessError) =>  {
+      console.error(`workschedulerLog isLastWorkTimeOut failed. code is ${error.code} message is ${error.message}`);
+    });
 ```
 
 ## WorkInfo
diff --git a/zh-cn/application-dev/task-management/continuous-task.md b/zh-cn/application-dev/task-management/continuous-task.md
index 70cf3617e06d706bf782e1b2db14358b5ce5fb6a..58fe36dad796cbc5a2b9730f0fc1b7966c71aae4 100644
--- a/zh-cn/application-dev/task-management/continuous-task.md
+++ b/zh-cn/application-dev/task-management/continuous-task.md
@@ -103,7 +103,7 @@
      private context: Context = getContext(this);
    
      startContinuousTask() {
-       let wantAgentInfo: wantAgent.wantAgentInfo = {
+       let wantAgentInfo: wantAgent.WantAgentInfo = {
          // 点击通知后，将要执行的动作列表
          wants: [
            {
@@ -353,7 +353,7 @@
     import { BusinessError } from '@ohos.base';
    ```
 
-4. 申请和取消长时任务。在 ServiceAbility 中，调用 startBackgroundRunning() 接口和 startBackgroundRunning() 接口实现长时任务的申请和取消。
+4. 申请和取消长时任务。在 ServiceAbility 中，调用 startBackgroundRunning() 接口和 startBackgroundRunning() 接口实现长时任务的申请和取消，通过js代码实现。
    
    ```js
     function startContinuousTask() {
diff --git a/zh-cn/application-dev/task-management/work-scheduler.md b/zh-cn/application-dev/task-management/work-scheduler.md
index 151854ae89fdd2cfe5e25900b33e89ca72b39abe..24504b1f763c91e250da3b72271db01d1115e2ac 100644
--- a/zh-cn/application-dev/task-management/work-scheduler.md
+++ b/zh-cn/application-dev/task-management/work-scheduler.md
@@ -121,7 +121,7 @@ WorkInfo参数用于设置应用条件，参数设置时需遵循以下规则：
    
    ```ts
    import WorkSchedulerExtensionAbility from '@ohos.WorkSchedulerExtensionAbility';
-   import workScheduler fron '@ohos.resourceschedule.workScheduler';
+   import workScheduler from '@ohos.resourceschedule.workScheduler';
    ```
 
 3. 实现WorkSchedulerExtension生命周期接口。
@@ -184,8 +184,8 @@ WorkInfo参数用于设置应用条件，参数设置时需遵循以下规则：
    try {
      workScheduler.startWork(this.workInfo);
      console.info(`startWork success`);
-   } catch (error: BusinessError) {
-     console.error(`startWork failed. code is ${error.code} message is ${error.message}`);
+   } catch (error) {
+     console.error(`startWork failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
    }
    ```
 
@@ -202,8 +202,8 @@ WorkInfo参数用于设置应用条件，参数设置时需遵循以下规则：
    try {
      workScheduler.stopWork(this.workInfo);
      console.info(`stopWork success`);
-   } catch (error: BusinessError) {
-     console.error(`stopWork failed. code is ${error.code} message is ${error.message}`);
+   } catch (error) {
+     console.error(`stopWork failed. code is ${(error as BusinessError).code} message is ${(error as BusinessError).message}`);
    }
    ```