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---
title: Selection.focusNode
slug: Web/API/Selection/focusNode
translation_of: Web/API/Selection/focusNode
---
<div>{{ ApiRef("DOM") }}{{SeeCompatTable}}</div>
<p><strong><code>Selection.focusNode</code></strong><code>是只读的</code><strong><code>，</code></strong><font><font>返回所选内容的结束位置部分所属的节点</font></font>.</p>
<p>用户可能会从左到右(按文字方向) 或从右到左 (按文字相反方向)进行选择. focusNode就是用户选择时最后停下来所处的元素节点. 当你同时按下shift键和任何一个方向键来改变选择时，你就能看到：选择的结束位置在移动, 但是选择的锚点-起始位置不会改变.</p>
<h2 id="Syntax" name="Syntax"><font><font>语法</font></font></h2>
<pre class="syntaxbox"><em>node</em> =<em> sel</em>.focusNode
</pre>
<h2 id="相关规范">相关规范</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">规范</th>
<th scope="col">状态</th>
<th scope="col">备注</th>
</tr>
<tr>
<td>{{SpecName('HTML Editing', '#dom-selection-focusnode', 'Selection.focusNode')}}</td>
<td>{{Spec2('HTML Editing')}}</td>
<td>Initial definition</td>
</tr>
<tr>
<td>{{SpecName('Selection API', '#widl-Selection-focusNode', 'Selection.focusNode')}}</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>特性</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari (WebKit)</th>
</tr>
<tr>
<td>基础特性支持</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>特性</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>基础特性支持</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">参考</h2>
<ul>
<li>{{domxref("Selection")}}, Selection接口规范.</li>
</ul>
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