---
title: IntersectionObserver.unobserve()
slug: Web/API/IntersectionObserver/unobserve
tags:
  - API
  - Intersection
  - unobserve
translation_of: Web/API/IntersectionObserver/unobserve
---
<div><code>unobserve()方法命令</code>IntersectionObserver停止对一个元素的观察。</div>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">IntersectionObserver.unobserve(<em>target</em>);</pre>

<h3 id="参数">参数</h3>

<dl>
 <dt><code>target</code></dt>
 <dd>要取消观察的目标，如果没有提供，方法不做任何事情，也不会抛出异常。</dd>
</dl>

<h3 id="返回值">返回值</h3>

<p><code>undefined</code>.</p>

<dl>
</dl>

<h2 id="例子">例子</h2>

<p>下面代码段展示了一个观察器被创建，一个元素被观察，以及取消观察的过程。</p>

<pre class="brush: js">var observer = new IntersectionObserver(callback);
observer.observe(document.getElementById("elementToObserve"));

/* ... */

observer.unobserve(document.getElementById("elementToObserve"));</pre>

<h2 id="说明">说明</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('IntersectionObserver','#dom-intersectionobserver-unobserve','IntersectionObserver.unobserve()')}}</td>
   <td>{{Spec2('IntersectionObserver')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>

<p>{{Compat("api.IntersectionObserver.unobserve")}}</p>

<h2 id="另请参阅">另请参阅</h2>

<ul>
 <li><a href="/en-US/docs/Web/API/Intersection_Observer_API">Intersection Observer API</a></li>
 <li>{{domxref("IntersectionObserver.observe()")}}</li>
</ul>