diff --git a/zh-cn/application-dev/device/inputdevice-guidelines.md b/zh-cn/application-dev/device/inputdevice-guidelines.md
index 30ec8073cb7e6d552b53afcc43b38f8aa6593f1f..d08fbacfef9c363dfb8b4c206008b05793e5434e 100644
--- a/zh-cn/application-dev/device/inputdevice-guidelines.md
+++ b/zh-cn/application-dev/device/inputdevice-guidelines.md
@@ -40,8 +40,8 @@ try {
   // 1.获取设备列表，判断是否有物理键盘连接
   inputDevice.getDeviceList().then(data => {
     for (let i = 0; i < data.length; ++i) {
-      inputDevice.getKeyboardType(data[i]).then(res => {
-        if (type == inputDevice.KeyboardType.ALPHABETIC_KEYBOARD) {
+      inputDevice.getKeyboardType(data[i]).then(type => {
+        if (type === inputDevice.KeyboardType.ALPHABETIC_KEYBOARD) {
           // 物理键盘已连接
           isPhysicalKeyboardExist = true;
         }
@@ -53,7 +53,7 @@ try {
     console.log(`Device event info: ${JSON.stringify(data)}`);
     inputDevice.getKeyboardType(data.deviceId, (error, type) => {
       console.log("The keyboard type is: " + type);
-      if (type == inputDevice.KeyboardType.ALPHABETIC_KEYBOARD && data.type == 'add') {
+      if (type === inputDevice.KeyboardType.ALPHABETIC_KEYBOARD && data.type == 'add') {
         // 物理键盘已插入
         isPhysicalKeyboardExist = true;
       } else if (type == inputDevice.KeyboardType.ALPHABETIC_KEYBOARD && data.type == 'remove') {
diff --git a/zh-cn/application-dev/device/pointerstyle-guidelines.md b/zh-cn/application-dev/device/pointerstyle-guidelines.md
index b15e2b58e42993d0baa5bd0876e2255d22e2f0c0..cc5f3fd52ed14efacfad961345635e7588f9f8ac 100644
--- a/zh-cn/application-dev/device/pointerstyle-guidelines.md
+++ b/zh-cn/application-dev/device/pointerstyle-guidelines.md
@@ -7,7 +7,7 @@
 ## 导入模块
 
 ```js
-import inputDevice from '@ohos.multimodalInput.pointer';
+import pointer from '@ohos.multimodalInput.pointer';
 ```
 
 ## 接口说明
diff --git a/zh-cn/application-dev/reference/apis/js-apis-mouseevent.md b/zh-cn/application-dev/reference/apis/js-apis-mouseevent.md
index 2b99f26abd110a15627dc3fd99e16bd86ed1eb1a..67b1b4b37b205a2325b77a19423400290933d6d9 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-mouseevent.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-mouseevent.md
@@ -9,7 +9,7 @@
 ## 导入模块
 
 ```js
-import {Action,Button,Axis,AxisValue,MouseEvent} from '@ohos.multimodalInput.mouseEvent';
+import { Action, Button, Axis, AxisValue, MouseEvent } from '@ohos.multimodalInput.mouseEvent';
 ```
 
 ## Action
diff --git a/zh-cn/application-dev/reference/apis/js-apis-pointer.md b/zh-cn/application-dev/reference/apis/js-apis-pointer.md
index 97eac7d233ccd4b8cafe3b9ec017b83a3db4aa7c..cb8bab502a388bba94fceba5a648cbb8788cc842 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-pointer.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-pointer.md
@@ -276,7 +276,7 @@ import window from '@ohos.window';
 
 window.getTopWindow((error, win) => {
   win.getProperties((error, properties) => {
-    var windowId = properties.id;
+    let windowId = properties.id;
     if (windowId < 0) {
       console.log(`Invalid windowId`);
       return;
@@ -319,7 +319,7 @@ import window from '@ohos.window';
 
 window.getTopWindow((error, win) => {
   win.getProperties((error, properties) => {
-    var windowId = properties.id;
+    let windowId = properties.id;
     if (windowId < 0) {
       console.log(`Invalid windowId`);
       return;
@@ -358,7 +358,7 @@ import window from '@ohos.window';
 
 window.getTopWindow((error, win) => {
   win.getProperties((error, properties) => {
-    var windowId = properties.id;
+    let windowId = properties.id;
     if (windowId < 0) {
       console.log(`Invalid windowId`);
       return;
@@ -396,7 +396,7 @@ import window from '@ohos.window';
 
 window.getTopWindow((error, win) => {
   win.getProperties((error, properties) => {
-    var windowId = properties.id;
+    let windowId = properties.id;
     if (windowId < 0) {
       console.log(`Invalid windowId`);
       return;