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+---
+title: Node.isEqualNode
+slug: Web/API/Node/isEqualNode
+tags:
+  - API
+  - DOM
+  - Node
+  - 参考
+  - 方法
+  - 节点
+translation_of: Web/API/Node/isEqualNode
+---
+<div>{{ ApiRef("DOM") }}</div>
+
+<p> <code><strong>Node.isEqualNode() </strong></code>方法可以判断两个节点是否相等。当两个节点的类型相同，定义特征(defining characteristics)相同（对元素来说，即 id，孩子节点的数量等等），属性一致等，这两个节点就是相等的。一些具体的数据指出：多数时候的比较是根据节点的类型来的。</p>
+
+<h3 id="语法">语法</h3>
+
+<pre class="syntaxbox">var <em>isEqualNode</em> = <em>node</em>.isEqualNode(<var>otherNode</var>);
+</pre>
+
+<ul>
+ <li><font face="Consolas, Liberation Mono, Courier, monospace">otherNode: </font>比较是否相等的节点.</li>
+</ul>
+
+<h2 id="示例">示例</h2>
+
+<p>在本例中，我们创建了三个 {{HTMLElement("div")}} 块。第一个和第三个 div 都拥有相同的内容和属性，第二个则不一样。然后我们运行 JavaScript ，使用 <code>isEqualNode()</code> 来比较这几个节点。</p>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html">&lt;div&gt;This is the first element.&lt;/div&gt;
+&lt;div&gt;This is the second element.&lt;/div&gt;
+&lt;div&gt;This is the first element.&lt;/div&gt;
+
+&lt;p id="output"&gt;&lt;/p&gt;</pre>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<pre class="brush: js">let output = document.getElementById("output");
+let divList  = document.getElementsByTagName("div");
+
+output.innerHTML += "div 0 equals div 0: " + divList[0].isEqualNode(divList[0]) + "&lt;br/&gt;";
+output.innerHTML += "div 0 equals div 1: " + divList[0].isEqualNode(divList[1]) + "&lt;br/&gt;";
+output.innerHTML += "div 0 equals div 2: " + divList[0].isEqualNode(divList[2]) + "&lt;br/&gt;";</pre>
+
+<h3 id="结果">结果</h3>
+
+<p>{{ EmbedLiveSample('示例', 480) }}</p>
+
+<h3 id="规范">规范</h3>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('DOM WHATWG', '#dom-node-isequalnode', 'Node.isEqualNode')}}</td>
+   <td>{{Spec2('DOM WHATWG')}}</td>
+   <td></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器支持">浏览器支持</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</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatGeckoDesktop("1.9")}}</td>
+   <td>9.0</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li>{{domxref("Node.isSameNode()")}}</li>
+</ul>