---
title: Document.origin
slug: Web/API/Document/origin
translation_of: Web/API/Document/origin
---
<div>{{APIRef("DOM")}}{{SeeCompatTable}}</div>

<p><strong><code>Document.origin</code></strong> （只读属性） 返回文档的来源。通常该属性与 <code>document.defaultView.location.origin </code>相等。</p>

<h2 id="示例">示例</h2>

<pre class="brush: js">var origin = document.origin;
// On this page, returns:'https://developer.mozilla.org'

var origin = document.origin;
// On "about:blank", returns:'null'

var origin = document.origin;
// On "data:text/html,&lt;b&gt;foo&lt;/b&gt;", returns:'null'
</pre>

<h2 id="Specifications">Specifications</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-document-origin', 'Document.origin')}}</td>
   <td>{{Spec2('DOM WHATWG')}}</td>
   <td>Initial definition.</td>
  </tr>
  <tr>
   <td>{{SpecName('HTML WHATWG', '#origin:document', 'origin for Document objects')}}</td>
   <td>{{Spec2('HTML WHATWG')}}</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.Document.origin")}}

<h2 id="参见">参见</h2>

<ul>
 <li> {{domxref("URLUtils.origin")}} 属性.</li>
</ul>