---
title: selectionchange
slug: Web/API/Document/selectionchange_event
translation_of: Web/API/Document/selectionchange_event
---
<div>
<p><a href="/en-US/docs/Web/API/Selection_API">Selection API</a> 的 <strong><code>selectionchange</code> </strong>事件在文档上的当前文本选择被改变时触发。</p>
</div>

<table class="standard-table">
 <tbody>
  <tr>
   <td>Bubbles</td>
   <td>No</td>
  </tr>
  <tr>
   <td>Cancelable</td>
   <td>No</td>
  </tr>
  <tr>
   <td>Target objects</td>
   <td>{{domxref("Document")}}</td>
  </tr>
  <tr>
   <td>Interface</td>
   <td>{{domxref("Event")}}</td>
  </tr>
 </tbody>
</table>

<h2 id="例子">例子</h2>

<pre class="brush: js notranslate">//以下两种方法可任选其一
document.addEventListener("selectionchange", () =&gt; {
  console.log(document.getSelection());
});

document.onselectionchange = () =&gt; {
  console.log(document.getSelection());
};
</pre>

<h2 id="继承">继承</h2>

<p><code>selectionchange</code> 事件实现了 {{domxref("Event")}} 接口，因此在此接口上定义的属性和方法都可使用。</p>

<p>{{InheritanceDiagram('','','', 'Event')}}</p>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">规范</th>
   <th scope="col">状态</th>
   <th scope="col">说明</th>
  </tr>
  <tr>
   <td>{{SpecName('Selection API', '#selectionchange-event', 'selectionchange')}}</td>
   <td>{{Spec2('Selection API')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div>{{CompatibilityTable}}</div>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Edge</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>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("52")}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
  <tr>
   <td>on <code>HTMLInputElement</code> and <code>HTMLTextAreaElement</code></td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatGeckoDesktop("52")}} - [1]</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Chrome for Android</th>
   <th>Edge</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>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoMobile("52")}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
  <tr>
   <td>on <code>HTMLInputElement</code> and <code>HTMLTextAreaElement</code></td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatGeckoMobile("52")}} - [1]</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
  </tr>
 </tbody>
</table>
</div>

<p>[1] - Experimental support in Nightly behind the <code>dom.select_events.textcontrols.enabled</code> preference. Support for input and textarea is currently not part of the specification.</p>

<h2 id="参考">参考</h2>

<ul>
 <li>{{domxref("Document.onselectionchange")}}</li>
</ul>