示例代码缩进2空格；if(err!==undefined)等直接改为if(err)即可

Signed-off-by: NHollokin <taoyuxin2@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-inputmethod.md

@@ -136,7 +136,7 @@ let prop = {
 }
 try{
   inputMethod.switchInputMethod(prop, (err, result) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to switchInputMethod: ' + JSON.stringify(err));
       return;
     }
@@ -267,7 +267,7 @@ try {
     iconId: 0,
     extra: {}
   }, (err, result) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to switchCurrentInputMethodSubtype: ' + JSON.stringify(err));
       return;
     }
@@ -395,7 +395,7 @@ let im = inputMethod.getCurrentInputMethod();
 let imSubType = inputMethod.getCurrentInputMethodSubtype();
 try {
   inputMethod.switchCurrentInputMethodAndSubtype(im, imSubType, (err,result) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to switchCurrentInputMethodAndSubtype: ' + JSON.stringify(err));
       return;
     }
@@ -690,7 +690,7 @@ try {
     }
   };
   inputMethodController.attach(true, textConfig, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error(`Failed to attach: ${JSON.stringify(err)}`);
       return;
     }
@@ -783,7 +783,7 @@ showTextInput(callback: AsyncCallback<void>): void
 
 ```js
 inputMethodController.showTextInput((err) => {
-    if (err !== undefined) {
+  if (err) {
     console.error(`Failed to showTextInput: ${JSON.stringify(err)}`);
     return;
   }
@@ -859,7 +859,7 @@ hideTextInput(callback: AsyncCallback<void>): void
 
 ```js
 inputMethodController.hideTextInput((err) => {
-    if (err !== undefined) {
+  if (err) {
     console.error(`Failed to hideTextInput: ${JSON.stringify(err)}`);
     return;
   }
@@ -932,7 +932,7 @@ detach(callback: AsyncCallback<void>): void
 
 ```js
 inputMethodController.detach((err) => {
-    if (err !== undefined) {
+  if (err) {
     console.error(`Failed to detach: ${JSON.stringify(err)}`);
     return;
   }
@@ -1006,7 +1006,7 @@ setCallingWindow(windowId: number, callback: AsyncCallback<void>): void
 try {
   let windowId: number = 2000;
   inputMethodController.setCallingWindow(windowId, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error(`Failed to setCallingWindow: ${JSON.stringify(err)}`);
       return;
     }
@@ -1096,7 +1096,7 @@ updateCursor(cursorInfo: CursorInfo, callback: AsyncCallback<void>): void
 ```js
 try {
   inputMethodController.updateCursor({left: 0, top: 0, width: 600, height: 800}, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error(`Failed to updateCursor: ${JSON.stringify(err)}`);
       return;
     }
@@ -1185,7 +1185,7 @@ changeSelection(text: string, start: number, end: number, callback: AsyncCallbac
 ```js
 try {
   inputMethodController.changeSelection('text', 0, 5, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error(`Failed to changeSelection: ${JSON.stringify(err)}`);
       return;
     }
@@ -1272,7 +1272,7 @@ updateAttribute(attribute: InputAttribute, callback: AsyncCallback<void>):
 ```js
 try {
   inputMethodController.updateAttribute({textInputType: 0, enterKeyType: 1}, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error(`Failed to updateAttribute: ${JSON.stringify(err)}`);
       return;
     }
@@ -1357,7 +1357,7 @@ stopInputSession(callback: AsyncCallback<boolean>): void
 ```js
 try {
   inputMethodController.stopInputSession((error, result) => {
-        if (error !== undefined) {
+    if (error) {
       console.error('Failed to stopInputSession: ' + JSON.stringify(error));
       return;
     }
@@ -1446,7 +1446,7 @@ showSoftKeyboard(callback: AsyncCallback<void>): void
 
 ```js
 inputMethodController.showSoftKeyboard((err) => {
-    if (err === undefined) {
+  if (!err) {
     console.info('Succeeded in showing softKeyboard.');
   } else {
     console.error('Failed to showSoftKeyboard: ' + JSON.stringify(err));
@@ -1522,7 +1522,7 @@ hideSoftKeyboard(callback: AsyncCallback<void>): void
 
 ```js
 inputMethodController.hideSoftKeyboard((err) => {
-    if (err === undefined) {
+  if (!err) {
     console.info('Succeeded in hiding softKeyboard.');
   } else {
     console.error('Failed to hideSoftKeyboard: ' + JSON.stringify(err));
@@ -1591,7 +1591,7 @@ stopInput(callback: AsyncCallback<boolean>): void
 
 ```js
 inputMethodController.stopInput((error, result) => {
-    if (error !== undefined) {
+  if (error) {
     console.error('Failed to stopInput: ' + JSON.stringify(error));
     return;
   }
@@ -2146,7 +2146,7 @@ let inputMethodProperty = {
 }
 try {
   inputMethodSetting.listInputMethodSubtype(inputMethodProperty, (err,data) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to listInputMethodSubtype: ' + JSON.stringify(err));
       return;
     }
@@ -2235,7 +2235,7 @@ listCurrentInputMethodSubtype(callback: AsyncCallback<Array<InputMethodSub
 ```js
 try {
   inputMethodSetting.listCurrentInputMethodSubtype((err, data) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to listCurrentInputMethodSubtype: ' + JSON.stringify(err));
       return;
     }
@@ -2312,7 +2312,7 @@ getInputMethods(enable: boolean, callback: AsyncCallback<Array<InputMethod
 ```js
 try {
   inputMethodSetting.getInputMethods(true, (err,data) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to getInputMethods: ' + JSON.stringify(err));
       return;
     }
@@ -2393,7 +2393,7 @@ showOptionalInputMethods(callback: AsyncCallback<boolean>): void
 ```js
 try {
   inputMethodSetting.showOptionalInputMethods((err, data) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to showOptionalInputMethods: ' + JSON.stringify(err));
       return;
     }
@@ -2458,7 +2458,7 @@ listInputMethod(callback: AsyncCallback<Array<InputMethodProperty>>)
 
 ```js
 inputMethodSetting.listInputMethod((err,data) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to listInputMethod: ' + JSON.stringify(err));
     return;
   }
@@ -2516,7 +2516,7 @@ displayOptionalInputMethod(callback: AsyncCallback<void>): void
 
 ```js
 inputMethodSetting.displayOptionalInputMethod((err) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to displayOptionalInputMethod: ' + JSON.stringify(err));
     return;
   }

zh-cn/application-dev/reference/apis/js-apis-inputmethodengine.md

@@ -513,7 +513,7 @@ let panelInfo: inputMethodEngine.PanelInfo = {
 }
 try {
   inputMethodEngine.getInputMethodAbility().createPanel(this.context, panelInfo, (err, panel) => {
-    if (err !== undefined) {
+    if (err) {
       console.log('Failed to create panel, err: ' + JSON.stringify(err));
       return;
     }
@@ -590,7 +590,7 @@ let panelInfo: inputMethodEngine.PanelInfo = {
 }
 try {
   inputMethodEngine.getInputMethodAbility().createPanel(this.context, panelInfo, (err, panel) => {
-    if (err !== undefined) {
+    if (err) {
       console.log('Failed to create panel, err: ' + JSON.stringify(err));
       return;
     }
@@ -642,7 +642,7 @@ let panelInfo: inputMethodEngine.PanelInfo = {
 }
 try {
   inputMethodEngine.getInputMethodAbility().createPanel(this.context, panelInfo, (err, panel) => {
-    if (err !== undefined) {
+    if (err) {
       console.log('Failed to create panel, err: ' + JSON.stringify(err));
       return;
     }
@@ -837,7 +837,7 @@ on(type: 'textChange', callback: (text: string) => void): void
 | 参数名   | 类型   | 必填 | 说明                                                         |
 | -------- | ------ | ---- | ------------------------------------------------------------ |
 | type     | string | 是   | 文本变化事件。<br/>-&nbsp;type为’textChange‘时，表示订阅文本变化事件。 |
-| callback | (text: string) => void | 是   | 回调函数，返回订阅的文本内容。                                   |
+| callback | (text: string) => void | 是   | 回调函数，返回订阅的文本内容。|
 
 **示例：**
 
@@ -1017,6 +1017,7 @@ try {
 resize(width: number, height: number, callback: AsyncCallback\<void>): void
 
 改变当前面板大小，使用callback异步回调。
+
 面板存在大小限制，面板宽度不超出屏幕宽度，面板高度不高于屏幕高度的二分之一。
 
 **系统能力：** SystemCapability.MiscServices.InputMethodFramework
@@ -1088,6 +1089,7 @@ try {
 moveTo(x: number, y: number, callback: AsyncCallback\<void>): void
 
 移动面板位置，使用callback异步回调。
+
 对FLG_FIXED状态的panel不产生实际移动效果。
 
 **系统能力：** SystemCapability.MiscServices.InputMethodFramework
@@ -1260,7 +1262,7 @@ promise.then(() => {
 
 on(type: 'show' | 'hide', callback: () => void): void
 
-监听当前面板状态，可监听面板类型为show或者hide， 使用callback异步回调。
+监听当前面板状态，使用callback异步回调。
 
 **系统能力：** SystemCapability.MiscServices.InputMethodFramework
 
@@ -1283,7 +1285,7 @@ panel.on('show', () => {
 
 off(type: 'show' | 'hide', callback?: () => void): void
 
-取消监听当前面板状态，可取消监听的面板类型为show或者hide，使用callback异步回调。
+取消监听当前面板状态，使用callback异步回调。
 
 **系统能力：** SystemCapability.MiscServices.InputMethodFramework
 
@@ -1351,7 +1353,7 @@ hide(callback: AsyncCallback&lt;void&gt;): void
 
 ```js
 keyboardController.hide((err) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to hide keyboard: ' + JSON.stringify(err));
     return;
   }
@@ -1413,7 +1415,7 @@ hideKeyboard(callback: AsyncCallback&lt;void&gt;): void
 
 ```js
 keyboardController.hideKeyboard((err) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to hide Keyboard: ' + JSON.stringify(err));
     return;
   }
@@ -1529,7 +1531,7 @@ sendKeyFunction(action:number, callback: AsyncCallback&lt;boolean&gt;): void
 let action = 1;
 try {
   inputClient.sendKeyFunction(action, (err, result) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to sendKeyFunction: ' + JSON.stringify(err));
       return;
     }
@@ -1621,7 +1623,7 @@ getForward(length:number, callback: AsyncCallback&lt;string&gt;): void
 let length = 1;
 try {
   inputClient.getForward(length, (err, text) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to getForward: ' + JSON.stringify(err));
       return;
     }
@@ -1706,7 +1708,7 @@ getBackward(length:number, callback: AsyncCallback&lt;string&gt;): void
 let length = 1;
 try {
   inputClient.getBackward(length, (err, text) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to getForward: ' + JSON.stringify(err));
       return;
     }
@@ -1791,7 +1793,7 @@ deleteForward(length:number, callback: AsyncCallback&lt;boolean&gt;): void
 let length = 1;
 try {
   inputClient.deleteForward(length, (err, result) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to delete forward: ' + JSON.stringify(err));
       return;
     }
@@ -1884,7 +1886,7 @@ deleteBackward(length:number, callback: AsyncCallback&lt;boolean&gt;): void
 let length = 1;
 try {
   inputClient.deleteBackward(length, (err, result) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to delete Backward: ' + JSON.stringify(err));
       return;
     }
@@ -1971,7 +1973,7 @@ insertText(text:string, callback: AsyncCallback&lt;boolean&gt;): void
 
 ```js
 inputClient.insertText('test', (err, result) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to insertText: ' + JSON.stringify(err));
     return;
   }
@@ -2056,7 +2058,7 @@ getEditorAttribute(callback: AsyncCallback&lt;EditorAttribute&gt;): void
 
 ```js
 inputClient.getEditorAttribute((err, editorAttribute) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to getEditorAttribute: ' + JSON.stringify(err));
     return;
   }
@@ -2126,7 +2128,7 @@ moveCursor(direction: number, callback: AsyncCallback&lt;void&gt;): void
 ```js
 try {
   inputClient.moveCursor(inputMethodEngine.CURSOR_UP, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to moveCursor: ' + JSON.stringify(err));
       return;
     }
@@ -2208,7 +2210,7 @@ selectByRange(range: Range, callback: AsyncCallback&lt;void&gt;): void
 ```js
 try {
   inputClient.selectByRange({start: 0, end: 1}, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to selectByRange: ${err.message}');
       return;
     }
@@ -2291,7 +2293,7 @@ selectByMovement(movement: Movement, callback: AsyncCallback&lt;void&gt;): void
 ```js
 try {
   inputClient.selectByMovement({direction: 1}, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error('Failed to selectByMovement: ${err.message}');
       return;
     }
@@ -2372,7 +2374,7 @@ getTextIndexAtCursor(callback: AsyncCallback&lt;number&gt;): void
 
 ```js
 inputClient.getTextIndexAtCursor((err, index) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to getTextIndexAtCursor: ${err.message}');
     return;
   }
@@ -2444,7 +2446,7 @@ sendExtendAction(action: ExtendAction, callback: AsyncCallback&lt;void&gt;): voi
 ```js
 try {
   inputClient.sendExtendAction(inputMethodEngine.ExtendAction.COPY, (err) => {
-        if (err !== undefined) {
+    if (err) {
       console.error(`Failed to sendExtendAction: ${JSON.stringify(err)}`);
       return;
     }
@@ -2587,7 +2589,7 @@ getForward(length:number, callback: AsyncCallback&lt;string&gt;): void
 ```js
 let length = 1;
 textInputClient.getForward(length, (err, text) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to getForward: ' + JSON.stringify(err));
     return;
   }
@@ -2654,7 +2656,7 @@ getBackward(length:number, callback: AsyncCallback&lt;string&gt;): void
 ```js
 let length = 1;
 textInputClient.getBackward(length, (err, text) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to getBackward: ' + JSON.stringify(err));
     return;
   }
@@ -2721,7 +2723,7 @@ deleteForward(length:number, callback: AsyncCallback&lt;boolean&gt;): void
 ```js
 let length = 1;
 textInputClient.deleteForward(length, (err, result) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to deleteForward: ' + JSON.stringify(err));
     return;
   }
@@ -2784,19 +2786,19 @@ deleteBackward(length:number, callback: AsyncCallback&lt;boolean&gt;): void
 
 **系统能力：** SystemCapability.MiscServices.InputMethodFramework
 
-  **参数：**
+**参数：**
 
 | 参数名   | 类型                         | 必填 | 说明           |
 | -------- | ---------------------------- | ---- | -------------- |
 | length   | number                       | 是   | 文本长度。     |
 | callback | AsyncCallback&lt;boolean&gt; | 是   | 回调函数。当光标后固定长度的文本删除成功，err为undefined，data为true；否则为错误对象。|
 
-  **示例：**
+**示例：**
 
 ```js
 let length = 1;
 textInputClient.deleteBackward(length, (err, result) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to delete backward: ' + JSON.stringify(err));
     return;
   }
@@ -2858,19 +2860,19 @@ sendKeyFunction(action: number, callback: AsyncCallback&lt;boolean&gt;): void
 
 **系统能力：** SystemCapability.MiscServices.InputMethodFramework
 
-  **参数：**
+**参数：**
 
 | 参数名 | 类型 | 必填 | 说明 |
 | -------- | -------- | -------- | -------- |
 | action | number | 是 | 功能键键值。<br/>当值为0时，表示无效按键；<br/>当值为1时，表示确认键（即回车键）。 |
 | callback | AsyncCallback&lt;boolean&gt; | 是 | 回调函数。当功能键发送成功，err为undefined，data为true；否则为错误对象。 |
 
-  **示例：**
+**示例：**
 
 ```js
 let action = 1;
 textInputClient.sendKeyFunction(action, (err, result) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to sendKeyFunction: ' + JSON.stringify(err));
     return;
   }
@@ -2944,7 +2946,7 @@ insertText(text:string, callback: AsyncCallback&lt;boolean&gt;): void
 
 ```js
 textInputClient.insertText('test', (err, result) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to insertText: ' + JSON.stringify(err));
     return;
   }
@@ -3016,7 +3018,7 @@ getEditorAttribute(callback: AsyncCallback&lt;EditorAttribute&gt;): void
 
 ```js
 textInputClient.getEditorAttribute((err, editorAttribute) => {
-    if (err !== undefined) {
+  if (err) {
     console.error('Failed to getEditorAttribute: ' + JSON.stringify(err));
     return;
   }