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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>
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