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---
title: DOMImplementation
slug: Web/API/DOMImplementation
tags:
- API
- DOM
- Interface
- Reference
translation_of: Web/API/DOMImplementation
---
<p>{{ ApiRef("DOM") }}</p>
<p><code style="font-style: normal; line-height: 1.5;"><strong>DOMImplementation</strong></code><span style="line-height: 1.5;"> 接口代表了一个对象，这个对象提供了不依赖于任何document的方法。这个对象可以通过{{domxref("Document.implementation")}}属性获得</span></p>
<h2 id="属性">属性</h2>
<p><em>这个接口没有特定的属性，并且也没有继承到任何属性。</em></p>
<h2 id="方法">方法</h2>
<p><em>没有继承的方法</em></p>
<dl>
<dt>{{domxref("DOMImplementation.createDocument()")}}</dt>
<dd>创建并返回一个 {{domxref("XMLDocument")}}对象.</dd>
<dt>{{domxref("DOMImplementation.createDocumentType()")}}</dt>
<dd>创建并返回一个 {{domxref("DocumentType")}}对象.</dd>
<dt>{{domxref("DOMImplementation.createHTMLDocument()")}}</dt>
<dd>创建并返回一个 {{domxref("Document")}}对象.</dd>
<dt>{{domxref("DOMImplementation.hasFeature()")}}</dt>
<dd>返回一个是否支持所给定特性的{{domxref("Boolean")}}值。这个方法是不可靠的，仅用于兼容性目的：除了SVG相关的查询，它总是返回 <code>true</code>。旧浏览器的行为非常不一致</dd>
<dd>Returns a {{domxref("Boolean")}} indicating if a given feature is supported or not. This function is unreliable and kept for compatibility purpose alone: except for SVG-related queries, it always returns <code>true</code>. Old browsers are very inconsistent in their behavior.</dd>
</dl>
<h2 id="规范">规范</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', '#domimplementation', 'DOMImplementation')}}</td>
<td>{{Spec2('DOM WHATWG')}}</td>
<td>Removed the <code>getFeature()</code> method.<br>
Added the <code>createHTMLDocument()</code> method.<br>
Modified the return type of <code>createDocument()</code> from {{domxref("Document")}} to {{domxref("XMLDocument")}}.</td>
</tr>
<tr>
<td>{{SpecName('DOM3 Core', 'core.html#ID-102161490', 'DOMImplementation')}}</td>
<td>{{Spec2('DOM3 Core')}}</td>
<td>Added the <code>getFeature()</code> method (never implemented by any user agent).</td>
</tr>
<tr>
<td>{{SpecName('DOM2 Core', 'core.html#ID-102161490', 'DOMImplementation')}}</td>
<td>{{Spec2('DOM2 Core')}}</td>
<td>Added the <code>createDocument()</code> and <code>createDocumentType()</code> methods.</td>
</tr>
<tr>
<td>{{SpecName('DOM1', 'level-one-core.html#ID-102161490', 'DOMImplementation')}}</td>
<td>{{Spec2('DOM1')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
{{Compat("api.DOMImplementation")}}
<h2 id="See_also">See also</h2>
<ul>
<li><a href="/en-US/docs/DOM/DOM_Reference" title="/en-US/docs/DOM/DOM_Reference">The DOM interfaces index.</a></li>
</ul>
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