zh-cn: Format /web/api using Prettier (part 8)

files/zh-cn/web/api/nodelist/index.md

@@ -14,10 +14,10 @@ slug: Web/API/NodeList
 在一些情况下，`NodeList` 是一个实时集合，也就是说，如果文档中的节点树发生变化，`NodeList` 也会随之变化。例如，{{domxref("Node.childNodes")}} 是实时的：
 
 ```js
-var parent = document.getElementById('parent');
+var parent = document.getElementById("parent");
 var child_nodes = parent.childNodes;
 console.log(child_nodes.length); // 我们假设结果会是“2”
-parent.appendChild(document.createElement('div'));
+parent.appendChild(document.createElement("div"));
 console.log(child_nodes.length); // 但此时的输出是“3”
 ```
 
@@ -49,7 +49,7 @@ console.log(child_nodes.length); // 但此时的输出是“3”
 
 ```js
 for (var i = 0; i < myNodeList.length; ++i) {
-  var item = myNodeList[i];  // 调用 myNodeList.item(i) 是没有必要的
+  var item = myNodeList[i]; // 调用 myNodeList.item(i) 是没有必要的
 }
 ```
 
@@ -58,7 +58,7 @@ for (var i = 0; i < myNodeList.length; ++i) {
 [for...of](/zh-CN/JavaScript/Reference/Statements/for...of) 循环**将会**正确的遍历 `NodeList` 对象：
 
 ```js
-var list = document.querySelectorAll('input[type=checkbox]');
+var list = document.querySelectorAll("input[type=checkbox]");
 for (var checkbox of list) {
   checkbox.checked = true;
 }
@@ -69,7 +69,7 @@ for (var checkbox of list) {
 也有一种使用数组 `Array` 的 {{jsxref("Array.forEach()", "Array.prototype.forEach")}} 来遍历 `NodeList` 的方法，这种方法兼容 Internet Explorer {{Deprecated_Inline}}：
 
 ```js
-var list = document.querySelectorAll('input[type=checkbox]');
+var list = document.querySelectorAll("input[type=checkbox]");
 Array.prototype.forEach.call(list, function (checkbox) {
   checkbox.checked = true;
 });
@@ -100,22 +100,21 @@ NodeList 的原型上除了类似数组的 `forEach` 方法之外，还有 `item
 一个解决办法就是把 `Array.prototype` 上的方法添加到 `NodeList.prototype` 上。可是，要注意[扩展 DOM 对象的原型是非常危险的](http://perfectionkills.com/whats-wrong-with-extending-the-dom/)，尤其是在旧版本的 Internet Explorer（6，7，8）中。
 
 ```js
-var arrayMethods = Object.getOwnPropertyNames( Array.prototype );
+var arrayMethods = Object.getOwnPropertyNames(Array.prototype);
 
-arrayMethods.forEach( attachArrayMethodsToNodeList );
+arrayMethods.forEach(attachArrayMethodsToNodeList);
 
-function attachArrayMethodsToNodeList(methodName)
-{
-  if(methodName !== "length") {
+function attachArrayMethodsToNodeList(methodName) {
+  if (methodName !== "length") {
     NodeList.prototype[methodName] = Array.prototype[methodName];
   }
-};
+}
 
-var divs = document.getElementsByTagName( 'div' );
-var firstDiv = divs[ 0 ];
+var divs = document.getElementsByTagName("div");
+var firstDiv = divs[0];
 
-firstDiv.childNodes.forEach(function( divChild ){
-  divChild.parentNode.style.color = '#0F0';
+firstDiv.childNodes.forEach(function (divChild) {
+  divChild.parentNode.style.color = "#0F0";
 });
 ```
 
@@ -124,11 +123,11 @@ firstDiv.childNodes.forEach(function( divChild ){
 ```js
 var forEach = Array.prototype.forEach;
 
-var divs = document.getElementsByTagName( 'div' );
-var firstDiv = divs[ 0 ];
+var divs = document.getElementsByTagName("div");
+var firstDiv = divs[0];
 
-forEach.call(firstDiv.childNodes, function( divChild ){
-  divChild.parentNode.style.color = '#0F0';
+forEach.call(firstDiv.childNodes, function (divChild) {
+  divChild.parentNode.style.color = "#0F0";
 });
 ```
 

files/zh-cn/web/api/nodelist/keys/index.md

@@ -32,8 +32,8 @@ node.appendChild(kid3);
 var list = node.childNodes;
 
 // Using for..of
-for(var key of list.keys()) {
-   console.log(key);
+for (var key of list.keys()) {
+  console.log(key);
 }
 ```
 

files/zh-cn/web/api/nodelist/length/index.md

@@ -12,7 +12,7 @@ slug: Web/API/NodeList/length
 ## 语法
 
 ```js
-numItems =nodeList.length
+numItems = nodeList.length;
 ```
 
 - `numItems` 是一个整数，表示 `NodeList` 子节点的数量。

files/zh-cn/web/api/nodelist/values/index.md

@@ -30,7 +30,7 @@ node.appendChild(kid3);
 var list = node.childNodes;
 
 // Using for..of
-for(var value of list.values()) {
+for (var value of list.values()) {
   console.log(value);
 }
 ```

files/zh-cn/web/api/notification/notification/index.md

@@ -47,13 +47,12 @@ let myNotification = new Notification(title, options);
 In our [Emogotchi demo](http://mdn.github.io/emogotchi/) ([see source code](https://github.com/mdn/emogotchi)), we run a simple `spawnNotification()` function when we want to fire a notification — this is passed arguments to specify the body, icon and title we want, then it creates the necessary `options` object and fires the notification using the `Notification()` constructor.
 
 ```js
-function spawnNotification(theBody,theIcon,theTitle) {
+function spawnNotification(theBody, theIcon, theTitle) {
   var options = {
-      body: theBody,
-      icon: theIcon
-  }
-  var n = new Notification(theTitle,options);
-
+    body: theBody,
+    icon: theIcon,
+  };
+  var n = new Notification(theTitle, options);
 }
 ```
 

files/zh-cn/web/api/notificationevent/index.md

@@ -33,23 +33,25 @@ _从其父项**{{domxref("ExtendableEvent")}}**继承方法_。
 ## 例
 
 ```js
-self.addEventListener('notificationclick', function(event) {
-  console.log('On notification click: ', event.notification.tag);
+self.addEventListener("notificationclick", function (event) {
+  console.log("On notification click: ", event.notification.tag);
   event.notification.close();
 
   // This looks to see if the current is already open and
   // focuses if it is
-  event.waitUntil(clients.matchAll({
-    type: "window"
-  }).then(function(clientList) {
-    for (var i = 0; i < clientList.length; i++) {
-      var client = clientList[i];
-      if (client.url == '/' && 'focus' in client)
-        return client.focus();
-    }
-    if (clients.openWindow)
-      return clients.openWindow('/');
-  }));
+  event.waitUntil(
+    clients
+      .matchAll({
+        type: "window",
+      })
+      .then(function (clientList) {
+        for (var i = 0; i < clientList.length; i++) {
+          var client = clientList[i];
+          if (client.url == "/" && "focus" in client) return client.focus();
+        }
+        if (clients.openWindow) return clients.openWindow("/");
+      }),
+  );
 });
 ```
 

files/zh-cn/web/api/notifications_api/using_the_notifications_api/index.md

@@ -22,9 +22,9 @@ Web Notifications API 使页面可以发出通知，通知将被显示在页面
 要显示一条通知，你需要先请求适当的权限，然后你可以实例化一个 {{domxref("Notification")}} 实例：
 
 ```js
-Notification.requestPermission( function(status) {
+Notification.requestPermission(function (status) {
   console.log(status); // 仅当值为 "granted" 时显示通知
-  var n = new Notification("title", {body: "notification body"}); // 显示通知
+  var n = new Notification("title", { body: "notification body" }); // 显示通知
 });
 ```
 
@@ -52,7 +52,7 @@ Notification.requestPermission( function(status) {
 通常你应在你的应用首次初始化的时候请求显示通知的权限：
 
 ```js
-window.addEventListener('load', function () {
+window.addEventListener("load", function () {
   Notification.requestPermission(function (status) {
     // 这将使我们能在 Chrome/Safari 中使用 Notification.permission
     if (Notification.permission !== status) {
@@ -103,7 +103,7 @@ window.addEventListener('load', function () {
 > var n = new Notification("Hi!");
 > n.onshow = function () {
 >   setTimeout(n.close.bind(n), 5000);
-> }
+> };
 > ```
 >
 > 当你接收到一个“close”事件时，并不能保证这个通知是被用户关闭的。这是符合规范的，其中指出：“当一个通知被关闭时，通知的关闭动作都必须执行，不论是底层通知平台导致，还是用户导致。”
@@ -119,7 +119,7 @@ window.addEventListener('load', function () {
 它可能通过这样的方式处理通知：
 
 ```js
-window.addEventListener('load', function () {
+window.addEventListener("load", function () {
   // 首先，让我们检查我们是否有权限发出通知
   // 如果没有，我们就请求获得权限
   if (window.Notification && Notification.permission !== "granted") {
@@ -130,9 +130,9 @@ window.addEventListener('load', function () {
     });
   }
 
-  var button = document.getElementsByTagName('button')[0];
+  var button = document.getElementsByTagName("button")[0];
 
-  button.addEventListener('click', function () {
+  button.addEventListener("click", function () {
     // 如果用户同意就创建一个通知
     if (window.Notification && Notification.permission === "granted") {
       var n = new Notification("Hi!");
@@ -189,7 +189,7 @@ window.addEventListener('load', function () {
 它有可能通过这种方式处理的多个通知：
 
 ```js
-window.addEventListener('load', function () {
+window.addEventListener("load", function () {
   // 首先，我们检查是否具有权限显示通知
   // 如果没有，我们就申请权限
   if (window.Notification && Notification.permission !== "granted") {
@@ -200,14 +200,14 @@ window.addEventListener('load', function () {
     });
   }
 
-  var button = document.getElementsByTagName('button')[0];
+  var button = document.getElementsByTagName("button")[0];
 
-  button.addEventListener('click', function () {
+  button.addEventListener("click", function () {
     // 如果用户同意接收通知，我们就尝试发送 10 条通知
     if (window.Notification && Notification.permission === "granted") {
       for (var i = 0; i < 10; i++) {
         // 感谢标记，我们应该只看到内容为 "Hi! 9" 的通知
-        var n = new Notification("Hi! " + i, {tag: 'soManyNotification'});
+        var n = new Notification("Hi! " + i, { tag: "soManyNotification" });
       }
     }
 
@@ -224,7 +224,7 @@ window.addEventListener('load', function () {
         if (status === "granted") {
           for (var i = 0; i < 10; i++) {
             // Thanks to the tag, we should only see the "Hi! 9" notification
-            var n = new Notification("Hi! " + i, {tag: 'soManyNotification'});
+            var n = new Notification("Hi! " + i, { tag: "soManyNotification" });
           }
         }
 

files/zh-cn/web/api/oes_vertex_array_object/index.md

@@ -34,7 +34,7 @@ WebGL extensions are available using the {{domxref("WebGLRenderingContext.getExt
 ## Examples
 
 ```js
-var oes_vao_ext = gl.getExtension('OES_vertex_array_object');
+var oes_vao_ext = gl.getExtension("OES_vertex_array_object");
 var vao = oes_vao_ext.createVertexArrayOES();
 oes_vao_ext.bindVertexArrayOES(vao);
 

files/zh-cn/web/api/offlineaudiocontext/complete_event/index.md

@@ -1,5 +1,5 @@
 ---
-title: 'OfflineAudioContext: complete event'
+title: "OfflineAudioContext: complete event"
 slug: Web/API/OfflineAudioContext/complete_event
 ---
 
@@ -37,21 +37,21 @@ slug: Web/API/OfflineAudioContext/complete_event
 处理完成后，您可能希望使用`oncomplete`处理程序提示用户现在可以播放音频，并启用播放按钮：
 
 ```js
-offlineAudioCtx.addEventListener('complete',()=> {
-  console.log('Offline audio processing now complete');
-  showModalDialog('Song processed and ready to play');
+offlineAudioCtx.addEventListener("complete", () => {
+  console.log("Offline audio processing now complete");
+  showModalDialog("Song processed and ready to play");
   playBtn.disabled = false;
-})
+});
 ```
 
 You can also set up the event handler using the {{domxref("OfflineAudioContext.oncomplete")}} property:
 
 ```js
-offlineAudioCtx.oncomplete = function() {
-  console.log('Offline audio processing now complete');
-  showModalDialog('Song processed and ready to play');
+offlineAudioCtx.oncomplete = function () {
+  console.log("Offline audio processing now complete");
+  showModalDialog("Song processed and ready to play");
   playBtn.disabled = false;
-}
+};
 ```
 
 ## Specifications

files/zh-cn/web/api/offlineaudiocontext/index.md

@@ -49,7 +49,7 @@ _从父级 {{domxref("AudioContext")}} 和 {{domxref("EventTarget")}} 获取方
 // 定义一个在线或者离线的音频上下文
 
 var audioCtx = new AudioContext();
-var offlineCtx = new OfflineAudioContext(2,44100*40,44100);
+var offlineCtx = new OfflineAudioContext(2, 44100 * 40, 44100);
 
 source = offlineCtx.createBufferSource();
 
@@ -60,36 +60,40 @@ source = offlineCtx.createBufferSource();
 function getData() {
   request = new XMLHttpRequest();
 
-  request.open('GET', 'viper.ogg', true);
+  request.open("GET", "viper.ogg", true);
 
-  request.responseType = 'arraybuffer';
+  request.responseType = "arraybuffer";
 
-  request.onload = function() {
+  request.onload = function () {
     var audioData = request.response;
 
-    audioCtx.decodeAudioData(audioData, function(buffer) {
+    audioCtx.decodeAudioData(audioData, function (buffer) {
       myBuffer = buffer;
       source.buffer = myBuffer;
       source.connect(offlineCtx.destination);
       source.start();
       //source.loop = true;
-      offlineCtx.startRendering().then(function(renderedBuffer) {
-        console.log('渲染完全成功');
-        var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
-        var song = audioCtx.createBufferSource();
-        song.buffer = renderedBuffer;
-
-        song.connect(audioCtx.destination);
-
-        play.onclick = function() {
-          song.start();
-        }
-      }).catch(function(err) {
-          console.log('渲染失败：' + err);
+      offlineCtx
+        .startRendering()
+        .then(function (renderedBuffer) {
+          console.log("渲染完全成功");
+          var audioCtx = new (window.AudioContext ||
+            window.webkitAudioContext)();
+          var song = audioCtx.createBufferSource();
+          song.buffer = renderedBuffer;
+
+          song.connect(audioCtx.destination);
+
+          play.onclick = function () {
+            song.start();
+          };
+        })
+        .catch(function (err) {
+          console.log("渲染失败：" + err);
           // 注意：当 OfflineAudioContext 上 startRendering 被立刻调用，Promise 应该被 reject
-      });
+        });
     });
-  }
+  };
 
   request.send();
 }