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: Node.isDefaultNamespace
+slug: Web/API/Node/isDefaultNamespace
+translation_of: Web/API/Node/isDefaultNamespace
+---
+<p>{{ ApiRef() }}</p>
+<h3 id="Summary" name="Summary">概述</h3>
+<p><code>isDefaultNamespace</code> 接受一个命名空间URI作为参数,如果该命名空间是当前节点的默认命名空间,则返回<code>true</code>,否则返回<code>false</code>.</p>
+<h3 id="Syntax" name="Syntax">语法</h3>
+<pre class="eval"><em>result</em> = <em>node</em>.isDefaultNamespace(<em>namespaceURI</em>)
+</pre>
+<ul>
+ <li><code>result</code> 为 <code>true</code> 或 <code>false</code>.</li>
+ <li><code>namespaceURI</code> 为一个命名空间URI.</li>
+</ul>
+<h3 id="Example" name="Example">例子</h3>
+<pre>var XULNS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+var el = document.getElementsByTagNameNS(XULNS, 'textbox')[0];
+alert(el.isDefaultNamespace(XULNS)); // true
+</pre>
+<h3 id="Specification" name="Specification">规范</h3>
+<ul>
+ <li><a class="external" href="http://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-isDefaultNamespace">DOM Level 3 Core: isDefaultNamespace</a></li>
+ <li><a href="/zh-cn/Code_snippets/IsDefaultNamespace" title="zh-cn/Code_snippets/IsDefaultNamespace">Code snippets: isDefaultNamespace</a></li>
+</ul>
+<p>{{ languages( {"en": "en/DOM/Node.isDefaultNamespace" } ) }}</p>
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