diff --git a/zh-cn/application-dev/reference/apis/js-apis-appControl.md b/zh-cn/application-dev/reference/apis/js-apis-appControl.md
index 2fb055b26cf86c50503a7e896a14b401717a7f58..c806fa7b4792af153dfbc7ff89d3bf21c7b8174f 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-appControl.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-appControl.md
@@ -60,11 +60,11 @@ try {
         .then(() => {
             console.info('setDisposedStatus success');
         }).catch((error) => {
-            let message = (err as BusinessError).message;
+            let message = (error as BusinessError).message;
             console.error('setDisposedStatus failed ' + message);
         });
 } catch (error) {
-    let message = (err as BusinessError).message;
+    let message = (error as BusinessError).message;
     console.error('setDisposedStatus failed ' + message);
 }
 ```
@@ -116,7 +116,7 @@ try {
         console.info('setDisposedStatus success');
     });
 } catch (error) {
-    let message = (err as BusinessError).message;
+    let message = (error as BusinessError).message;
     console.error('setDisposedStatus failed ' + message);
 }
 ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-bundleMonitor.md b/zh-cn/application-dev/reference/apis/js-apis-bundleMonitor.md
index 24b5f769ff3be550e939f27a20ab7e3be04de1da..aa5bf9c6223e1b7571a7eb25dd7098148861aa21 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-bundleMonitor.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-bundleMonitor.md
@@ -68,13 +68,16 @@ on(type: BundleChangedEvent, callback: Callback\<BundleChangedInfo>): void;
 
 ```ts
 import bundleMonitor from '@ohos.bundle.bundleMonitor';
+import { BusinessError } from '@ohos.base';
 
 try {
     bundleMonitor.on('add', (bundleChangeInfo) => {
         console.info(`bundleName : ${bundleChangeInfo.bundleName} userId : ${bundleChangeInfo.userId}`);
 	})
 } catch (errData) {
-    console.log(`errData is errCode:${errData.errCode}  message:${errData.message}`);
+    let message = (errData as BusinessError).message;
+    let errCode = (errData as BusinessError).code;
+    console.log(`errData is errCode:${errCode}  message:${message}`);
 }
 ```
 
@@ -101,10 +104,13 @@ off(type: BundleChangedEvent, callback?: Callback\<BundleChangedInfo>): void;
 
 ```ts
 import bundleMonitor from '@ohos.bundle.bundleMonitor';
+import { BusinessError } from '@ohos.base';
 
 try {
     bundleMonitor.off('add');
 } catch (errData) {
-    console.log(`errData is errCode:${errData.errCode}  message:${errData.message}`);
+    let message = (errData as BusinessError).message;
+    let errCode = (errData as BusinessError).code;
+    console.log(`errData is errCode:${errCode}  message:${message}`);
 }
 ```
\ No newline at end of file
diff --git a/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md b/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md
index 0a791c8096e6492071c04fdbb1b4156cbd30001d..d4225622cfc8c80d91351a5ed6706d3ed736ad2f 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md
@@ -390,25 +390,32 @@ setDefaultApplication(type: string, elementName: ElementName, userId?: number):
 
 ```ts
 import defaultAppMgr from '@ohos.bundle.defaultAppManager';
-let info: defaultAppMgr.ElementName = {
+defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, {
     bundleName: "com.example.myapplication",
     moduleName: "module01",
     abilityName: "EntryAbility"
-}
-defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, info).then((data: defaultAppMgr.AsyncCallback<void>) => {
+}).then((data: defaultAppMgr.AsyncCallback<void>) => {
     console.info('Operation successful.');
 }).catch((error) => {
     console.error('Operation failed. Cause: ' + JSON.stringify(error));
 });
 
 let userId = 100;
-defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, info, userId).then((data: defaultAppMgr.AsyncCallback<void>) => {
+defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, {
+    bundleName: "com.example.myapplication",
+    moduleName: "module01",
+    abilityName: "EntryAbility"
+}, userId).then((data: defaultAppMgr.AsyncCallback<void>) => {
     console.info('Operation successful.');
 }).catch((error) => {
     console.error('Operation failed. Cause: ' + JSON.stringify(error));
 });
 
-defaultAppMgr.setDefaultApplication("image/png", info, userId).then((data: defaultAppMgr.AsyncCallback<void>) => {
+defaultAppMgr.setDefaultApplication("image/png", {
+    bundleName: "com.example.myapplication",
+    moduleName: "module01",
+    abilityName: "EntryAbility"
+}, userId).then((data: defaultAppMgr.AsyncCallback<void>) => {
     console.info('Operation successful.');
 }).catch((error) => {
     console.error('Operation failed. Cause: ' + JSON.stringify(error));
@@ -453,12 +460,11 @@ import defaultAppMgr from '@ohos.bundle.defaultAppManager';
 import { BusinessError } from '@ohos.base';
 
 let userId = 100;
-let info: defaultAppMgr.ElementName = {
+defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, {
     bundleName: "com.example.myapplication",
     moduleName: "module01",
     abilityName: "EntryAbility"
-}
-defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, info, userId, (errerr: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+}, userId, (errerr: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     if (err) {
         console.error('Operation failed. Cause: ' + JSON.stringify(err));
         return;
@@ -466,7 +472,11 @@ defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, info,
     console.info('Operation successful.');
  });
 
-defaultAppMgr.setDefaultApplication("image/png", info, userId, (errerr: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+defaultAppMgr.setDefaultApplication("image/png", {
+    bundleName: "com.example.myapplication",
+    moduleName: "module01",
+    abilityName: "EntryAbility"
+}, userId, (errerr: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     if (err) {
         console.error('Operation failed. Cause: ' + JSON.stringify(err));
         return;
@@ -510,12 +520,11 @@ setDefaultApplication(type: string, elementName: ElementName, callback: AsyncCal
 import defaultAppMgr from '@ohos.bundle.defaultAppManager';
 import { BusinessError } from '@ohos.base';
 
-let info: defaultAppMgr.ElementName = {
+defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, {
     bundleName: "com.example.myapplication",
     moduleName: "module01",
     abilityName: "EntryAbility"
-}
-defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, info, (err: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+}, (err: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     if (err) {
         console.error('Operation failed. Cause: ' + JSON.stringify(err));
         return;
@@ -523,7 +532,11 @@ defaultAppMgr.setDefaultApplication(defaultAppMgr.ApplicationType.BROWSER, info,
     console.info('Operation successful.');
  });
 
-defaultAppMgr.setDefaultApplication("image/png", info, (err: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+defaultAppMgr.setDefaultApplication("image/png", {
+    bundleName: "com.example.myapplication",
+    moduleName: "module01",
+    abilityName: "EntryAbility"
+}, (err: BusinessError, data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     if (err) {
         console.error('Operation failed. Cause: ' + JSON.stringify(err));
         return;
@@ -566,25 +579,32 @@ setDefaultApplicationSync(type: string, elementName: ElementName, userId?: numbe
 
 ```ts
 import defaultAppMgr from '@ohos.bundle.defaultAppManager';
-let info: defaultAppMgr.ElementName = {
+defaultAppMgr.setDefaultApplicationSync(defaultAppMgr.ApplicationType.BROWSER, {
     bundleName: "com.example.myapplication",
     moduleName: "module01",
     abilityName: "EntryAbility"
-}
-defaultAppMgr.setDefaultApplicationSync(defaultAppMgr.ApplicationType.BROWSER, info).then((data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+}).then((data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     console.info('Operation successful.');
 }).catch((error) => {
     console.error('Operation failed. Cause: ' + JSON.stringify(error));
 });
 
 let userId = 100;
-defaultAppMgr.setDefaultApplicationSync(defaultAppMgr.ApplicationType.BROWSER, info, userId).then((data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+defaultAppMgr.setDefaultApplicationSync(defaultAppMgr.ApplicationType.BROWSER, {
+    bundleName: "com.example.myapplication",
+    moduleName: "module01",
+    abilityName: "EntryAbility"
+}, userId).then((data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     console.info('Operation successful.');
 }).catch((error) => {
     console.error('Operation failed. Cause: ' + JSON.stringify(error));
 });
 
-defaultAppMgr.setDefaultApplicationSync("image/png", info, userId).then((data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
+defaultAppMgr.setDefaultApplicationSync("image/png", {
+    bundleName: "com.example.myapplication",
+    moduleName: "module01",
+    abilityName: "EntryAbility"
+}, userId).then((data: defaultAppMgr.AsyncCallback<BundleInfo>) => {
     console.info('Operation successful.');
 }).catch((error) => {
     console.error('Operation failed. Cause: ' + JSON.stringify(error));