update docs against 5488

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

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

@@ -6,7 +6,7 @@
 
 ## Modules to Import
 
-```
+```js
 import mediaquery from '@ohos.mediaquery'
 ```
 
@@ -33,8 +33,8 @@ Sets the media query criteria and returns the corresponding listening handle.
   | MediaQueryListener | Listening handle to a media event, which is used to register or unregister the listening callback.| 
 
 - Example
-  ```
-  listener = mediaquery.matchMediaSync('(orientation: landscape)'); // Listen for landscape events.
+  ```js
+let listener = mediaquery.matchMediaSync('(orientation: landscape)'); // Listen for landscape events.
   ```
 
 
@@ -79,10 +79,10 @@ Unregisters a callback with the corresponding query condition by using the handl
   | callback | Callback<MediaQueryResult> | No| Callback to be unregistered. If the default value is used, all callbacks of the handle are unregistered.| 
 
 - Example
-  ```
+  ```js
     import mediaquery from '@ohos.mediaquery'
     
-    listener = mediaquery.matchMediaSync('(orientation: landscape)'); // Listen for landscape events.
+    let listener = mediaquery.matchMediaSync('(orientation: landscape)'); // Listen for landscape events.
     function onPortrait(mediaQueryResult) {
         if (mediaQueryResult.matches) {
             // do something here
@@ -90,8 +90,8 @@ Unregisters a callback with the corresponding query condition by using the handl
             // do something here
         }
     }
-    this.listener.on('change', this.onPortrait) // Registration callback.
-    this.listener.off('change', this.onPortrait) // Deregistration callback.
+    listener.on('change', onPortrait) // Register a callback.
+    listener.off('change', onPortrait) // Unregister a callback.
   ```
 
 
@@ -108,7 +108,7 @@ Unregisters a callback with the corresponding query condition by using the handl
 
 ### Example
 
-```
+```js
 import mediaquery from '@ohos.mediaquery'
 
 let portraitFunc = null

en/application-dev/reference/apis/js-apis-system-prompt.md

 # Prompt
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
+> **NOTE**
 >
 > - The APIs of this module are no longer maintained since API version 8. You are advised to use ['@ohos.prompt](js-apis-prompt.md)' instead.
 >
@@ -11,7 +11,7 @@
 ## Modules to Import
 
 
-```
+```js
 import prompt from '@system.prompt';
 ```
 
@@ -31,7 +31,7 @@ Shows the toast.
 
 **Example**
 
-```
+```js
 export default {    
   showToast() {        
     prompt.showToast({            
@@ -60,7 +60,7 @@ Shows the dialog box.
 
 **Example**
 
-```
+```js
 export default {    
   showDialog() {       
     prompt.showDialog({           
@@ -100,7 +100,7 @@ Shows the action menu.
 
 **Example**
 
-```
+```js
 export default {    
   showActionMenu() {        
     prompt.showActionMenu({            
@@ -115,11 +115,11 @@ export default {
            color: '#000000',                
         },            
       ],            
-      success: function(data) {                
-        console.log('dialog success callback, click button : ' + data.tapIndex);           
+      success: function(tapIndex) {                
+        console.log('dialog success callback£¬click button : ' + tapIndex);            
       },            
-      fail: function(data) {                
-        console.log('dialog fail callback' + data.errMsg);            
+      fail: function(errMsg) {                
+        console.log('dialog fail callback' + errMsg);            
       },       
     });    
   }

en/application-dev/reference/apis/js-apis-system-router.md

 # Page Routing
 
-> ![icon-note.gif](public_sys-resources/icon-note.gif) **NOTE**
+> **NOTE**
 >
 > - The APIs of this module are no longer maintained since API version 8. You are advised to use [`@ohos.router`](js-apis-router.md) instead.
 >
@@ -11,7 +11,7 @@
 ## Modules to Import
 
 
-```
+```js
 import router from '@system.router';
 ```
 
@@ -31,7 +31,7 @@ Navigates to a specified page in the application.
 
 **Example**
 
-```
+```js
 // Current page
 export default {
   pushPage() {
@@ -49,7 +49,7 @@ export default {
 ```
 
 
-```
+```js
 // routerpage2 page
 export default {
   data: {
@@ -85,7 +85,7 @@ Replaces the current page with another one in the application and destroys the c
 
 **Example**
 
-```
+```js
 // Current page
 export default {
   replacePage() {
@@ -100,7 +100,7 @@ export default {
 ```
 
 
-```
+```js
 // detail page
 export default {
   data: {
@@ -128,7 +128,7 @@ Returns to the previous page or a specified page.
 
 **Example**
 
-```
+```js
 // index page
 export default {    
   indexPushPage() {        
@@ -140,7 +140,7 @@ export default {
 ```
 
 
-```
+```js
 // detail page
 export default {    
   detailPushPage() {        
@@ -152,7 +152,7 @@ export default {
 ```
 
 
-```
+```js
 // Navigate from the mall page to the detail page through router.back().
 export default {    
   mallBackPage() {        
@@ -162,7 +162,7 @@ export default {
 ```
 
 
-```
+```js
 // Navigate from the detail page to the index page through router.back().
 export default {    
   defaultBack() {        
@@ -172,7 +172,7 @@ export default {
 ```
 
 
-```
+```js
 // Return to the detail page through router.back().
 export default {    
   backToDetail() {        
@@ -208,7 +208,7 @@ Clears all historical pages in the stack and retains only the current page at th
 
 **Example**
 
-```
+```js
 export default {    
   clearPage() {        
     router.clear();    
@@ -232,7 +232,7 @@ Obtains the number of pages in the current stack.
 
 **Example**
 
-```
+```js
 export default {     
   getLength() {        
     var size = router.getLength();        
@@ -257,7 +257,7 @@ Obtains state information about the current page.
 
 **Example**
 
-```
+```js
 export default {     
   getState() {        
     var page = router.getState();
@@ -284,7 +284,7 @@ Enables the display of a confirm dialog box before returning to the previous pag
 
 **Example**
 
-```
+```js
 export default {    
   enableAlertBeforeBackPage() {        
     router.enableAlertBeforeBackPage({            
@@ -292,8 +292,8 @@ export default {
       success: function() {                
         console.log('success');            
       },            
-      fail: function() {                
-        console.log('fail');            
+      cancel: function() {                
+        console.log('cancel');            
       },        
     });    
   }
@@ -316,15 +316,15 @@ Disables the display of a confirm dialog box before returning to the previous pa
 
 **Example**
 
-```
+```js
 export default {    
   disableAlertBeforeBackPage() {        
     router.disableAlertBeforeBackPage({            
       success: function() {                
         console.log('success');            
       },            
-      fail: function() {                
-        console.log('fail');            
+      cancel: function() {                
+        console.log('cancel');            
       },        
     });    
   }