From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: Range.commonAncestorContainer
+slug: Web/API/Range/commonAncestorContainer
+translation_of: Web/API/Range/commonAncestorContainer
+---
+<div>{{ApiRef("DOM")}}</div>
+
+<p><code><strong>Range.commonAncestorContainer</strong></code><strong> </strong>只读属性，返回目标节点的共有祖先节点。因而需要注意：selectNode方法中的该值为目标节点的父节点，selectNodeContents方法中的该值为其本身。</p>
+
+<p>在某些跨节点的选取操作时，取得最大"公约数"的节点为<code>commonAncestorContainer。</code>即{{domxref("Range.startContainer")}} 和 {{domxref("Range.endContainer")}} 相同的节点是目标节点的 共有祖先节点。</p>
+
+<p>更改 {{domxref("Node")}}, 请使用setStart setEnd 及这两种方法的延伸方法 {{domxref("Range")}}.</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox">rangeAncestor = <em>range</em>.commonAncestorContainer;</pre>
+
+<h2 id="Example" name="Example">示例</h2>
+
+<pre class="brush:js">var range = document.createRange();
+
+range.setStart(startNode,startOffset);
+range.setEnd(endNode,endOffset);
+rangeAncestor = range.commonAncestorContainer;</pre>
+
+<h2 id="Specification" name="Specification">特别说明</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM WHATWG', '#dom-range-commonancestorcontainer', 'Range.commonAncestorContainer')}}</td>
+   <td>{{Spec2('DOM WHATWG')}}</td>
+   <td>No change.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('DOM2 Traversal_Range', 'ranges.html#Level-2-Range-attr-commonParent', 'Range.commonAncestorContainer')}}</td>
+   <td>{{Spec2('DOM2 Traversal_Range')}}</td>
+   <td>Initial specification.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="支持度">支持度</h2>
+
+
+
+<p>{{Compat("api.Range.commonAncestorContainer")}}</p>
+
+<h2 id="更多">更多</h2>
+
+<ul>
+ <li><a href="/en-US/docs/DOM/DOM_Reference" title="/en-US/docs/DOM/DOM_Reference">DOM接口相关内容</a></li>
+</ul>
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