Revision 1038134 of Node.isSameNode()

<div>{{APIRef("DOM")}}</div>

<p>The <code><strong>Node.isSameNode()</strong></code>&nbsp;method tests whether two nodes are the same, that is if they reference the same object.</p>

<h2 id="Syntax">Syntax</h2>

<pre class="syntaxbox">
var <em>isSameNode</em> = <em>node</em>.isSameNode(<em>other</em>);
</pre>

<h3 id="Parameters">Parameters</h3>

<ul>
 <li><code>other</code> The {{domxref("Node")}} to test against.</li>
</ul>

<h2 id="Example">Example</h2>

<p>In this example, we create three {{HTMLElement("div")}} blocks. The first and third have the same contents and attributes, while the second is different. Then we run some JavaScript to compare the nodes using <code>isSameNode()</code> and output the results.</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>

<div class="hidden">
<h3 id="CSS">CSS</h3>

<pre class="brush: css">
#output {
&nbsp; width: 440px;
&nbsp; border: 2px solid black;
&nbsp; border-radius: 5px;
&nbsp; padding: 10px;
&nbsp; margin-top: 20px;
&nbsp; display: block;
}</pre>
</div>

<h3 id="JavaScript">JavaScript</h3>

<pre class="brush: js">
let output = document.getElementById("output");
let divList  = document.getElementsByTagName("div");

output.innerHTML += "div 0 same as div 0: " + divList[0].isSameNode(divList[0]) + "&lt;br/&gt;";
output.innerHTML += "div 0 same as div 1: " + divList[0].isSameNode(divList[1]) + "&lt;br/&gt;";
output.innerHTML += "div 0 same as div 2: " + divList[0].isSameNode(divList[2]) + "&lt;br/&gt;";
</pre>

<h3 id="Results">Results</h3>

<p>{{ EmbedLiveSample('Example', 480) }}</p>

<h2 id="Specifications">Specifications</h2>

<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', '#interface-node', 'Node')}}</td>
   <td>{{Spec2('DOM WHATWG')}}</td>
   <td>No change (was for a long time removed from it).</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM3 Core', 'core.html#Node3-isSameNode', 'Node.isSameNode()')}}</td>
   <td>{{Spec2('DOM3 Core')}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<h2 id="sect1">&nbsp;</h2>

<h2 id="Browser_compatibility">Browser compatibility</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>{{CompatUnknown}}</td>
   <td>{{CompatGeckoDesktop("1.0")}}<br />
    Removed in {{CompatGeckoDesktop("10")}}<br />
    Readded in {{CompatGeckoDesktop("48")}}</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</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>{{CompatUnknown}}</td>
   <td>{{CompatGeckoMobile("1.0")}}<br />
    Removed in {{CompatGeckoMobile("10")}}<br />
    Readded in {{CompatGeckoMobile("48")}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="See_also">See also</h2>

<ul>
 <li>{{domxref("Node.isEqualNode()")}}</li>
</ul>