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+---
+title: window.cancelIdleCallback()
+slug: Web/API/Window/cancelIdleCallback
+tags:
+  - API
+  - JavaScript timers
+  - Window
+  - cancelIdleCallback
+translation_of: Web/API/Window/cancelIdleCallback
+---
+<div>{{APIRef}}{{SeeCompatTable}}</div>
+
+<h2 id="Summary" name="Summary">概述</h2>
+
+<p> <strong><code>window.cancelIdleCallback()</code></strong> 方法用于取消之前调用{{domxref("window.requestIdleCallback()")}} 的回调。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox">window.cancelIdleCallback(<em>handle</em>);</pre>
+
+<h3 id="Parameters" name="Parameters">参数</h3>
+
+<dl>
+ <dt><code>handle</code></dt>
+ <dd>调用 {{domxref("window.requestIdleCallback()")}}  时返回的 ID.</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p><code>undefined</code>.</p>
+
+<h2 id="示例">示例</h2>
+
+<p>在文章 <a href="/en-US/docs/Web/API/Background_Tasks_API">Cooperative Scheduling of Background Tasks API</a> 中可以查看<a href="/en-US/docs/Web/API/Background_Tasks_API#Example"> 完整示例</a> 。</p>
+
+<h2 id="Specifications" name="Specifications">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th>Specification</th>
+   <th>Status</th>
+   <th>Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Background Tasks')}}</td>
+   <td>{{Spec2('Background Tasks')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari (WebKit)</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatChrome(47)}}</td>
+   <td>{{CompatGeckoDesktop(53)}}<sup>[1]</sup></td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android Webview</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>Firefox OS</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatChrome(47)}}</td>
+   <td>{{CompatChrome(47)}}</td>
+   <td>{{CompatGeckoMobile(53)}}<sup>[1]</sup></td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] Idle callback 在  Firefox 53 中增加, 默认是禁用状态，设置  <code>dom.requestIdleCallback.enabled</code> 为 <code>true</code>启用。 Idle callbacks 再 Firefox 55及之后版本中默认启用。</p>