---
title: Node.isSameNode
slug: Web/API/Node/isSameNode
translation_of: Web/API/Node/isSameNode
---
<p>{{ ApiRef() }}</p>
<p>{{ Obsolete_header() }}</p>
<h2 id="概述">概述</h2>
<p>判断两个节点是否是相同的节点,即指向同一个对象.</p>
<div class="warning">
 <strong>警告:</strong>该方法已在DOM level 4中被废弃,最近的浏览器版本(Gecko 10.0 {{ geckoRelease("10.0") }}.)已经删除了这个方法.<br>
 也就是说,不要再使用<br>
 <code>  node1.isSameNode(node2)</code><br>
 而使用<br>
 <code>  node1 === node2  </code>或者<code>  node1 == node2</code><br>
 来代替.</div>
<h2 id="语法">语法</h2>
<pre class="eval">var <em>isSameNode</em> = <em>node</em>.isSameNode(<em>other</em>);
</pre>
<ul>
 <li><code>other</code>是要和<code>node</code>判断相同性的另一个节点.</li>
</ul>
<h2 id="规范">规范</h2>
<ul>
 <li>{{ spec("http://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-isSameNode","DOM Level 3 Core: isSameNode","REC") }}</li>
 <li>This has been removed from {{ spec("http://www.w3.org/TR/domcore/","DOM Core Level 4","WD") }}</li>
</ul>