files/zh-cn/web/api/window/document/index.html


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---
title: window.document
slug: Web/API/Window/document
translation_of: Web/API/Window/document
---
<p>{{ ApiRef() }}</p>

<p><span class="seoSummary"><strong><code>window.document</code></strong>返回当前窗口内的文档节点（{{domxref("document")}}）</span></p>

<div class="note"><strong>注:</strong> {{ Fx_minversion_inline(3) }}从Firefox 3和IE7开始,访问其他页面内的文档节点会受到同源策略的影响.</div>

<h2 id="Syntax" name="Syntax">语法</h2>

<pre class="eval notranslate"><em>doc</em> = window.document
</pre>

<h2 id="Parameters" name="Parameters">参数</h2>

<ul>
 <li><code>doc</code>是一个指向{{domxref("document")}}对象的引用</li>
</ul>

<h2 id="Example" name="Example">例子</h2>

<pre class="brush:html notranslate">&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
   &lt;title&gt;Hello, World!&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;script type="text/javascript"&gt;
   var doc = window.document;
   alert( doc.title);    // 弹出: Hello, World!
&lt;/script&gt;

&lt;/body&gt;
&lt;/html&gt;</pre>

<h2 id="Specification" name="Specification">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('HTML WHATWG', '#dom-document-2', 'Window.document')}}</td>
   <td>{{Spec2('HTML WHATWG')}}</td>
   <td></td>
  </tr>
  <tr>
   <td>{{SpecName('HTML5 W3C', 'browsers.html#dom-document-0', 'Window.document')}}</td>
   <td>{{Spec2('HTML5 W3C')}}</td>
   <td></td>
  </tr>
 </tbody>
</table>


<h2 id="浏览器兼容性">浏览器兼容性</h2>


<p>{{Compat("api.Window.document")}}</p>