---
title: Selection.anchorNode
slug: Web/API/Selection/anchorNode
translation_of: Web/API/Selection/anchorNode
---
<div>{{ApiRef}}</div>

<h2 id="Summary" name="Summary">概述</h2>

<p><strong><code>Selection.anchorNode </code></strong><code>只读属性</code>返回选区开始位置所属的节点（{{domxref("Node")}}）。</p>

<h2 id="Syntax" name="Syntax">用法</h2>

<pre class="syntaxbox"><em>sel</em>.anchorNode</pre>

<h2 id="Notes" name="Notes">注意</h2>

<p>用户可能从左至右进行框选（沿着文字顺序）或者从右至左框选（沿着文字顺序的反方向）。锚点位于用户开始选择的位置。可以通过按住Shift和方向键来得知锚点所在的位置。选区的锚点是不会移动的，但是选区的焦点、选区其他的结束位置（多个选区，译者注）可以移动。</p>

<h2 id="说明">说明</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">说明</th>
   <th scope="col">状态</th>
   <th scope="col">注释</th>
  </tr>
  <tr>
   <td>{{SpecName('HTML Editing', '#dom-selection-anchornode', 'Selection.anchorNode')}}</td>
   <td>{{Spec2('HTML Editing')}}</td>
   <td>Initial definition</td>
  </tr>
  <tr>
   <td>{{SpecName('Selection API', '##widl-Selection-anchorNode', 'Selection.anchorNode')}}</td>
   <td>{{Spec2('Selection API')}}</td>
   <td>Current</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility" name="Browser_compatibility">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>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari (WebKit)</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown()}}</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>Firefox OS</th>
   <th>IE Phone</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown()}}</td>
   <td>1.0</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<h2 id="See_also" name="See_also">相关链接</h2>

<ul>
 <li>{{domxref("Selection")}}, 此属性所属接口。</li>
</ul>