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---
title: Node.ownerDocument
slug: Web/API/Node/ownerDocument
translation_of: Web/API/Node/ownerDocument
---
<div>{{APIRef("DOM")}}</div>
<p><code><strong>Node.ownerDocument</strong></code> 唯讀屬性會回傳一個此節點所屬的的頂層 <code>document</code> 物件。</p>
<h2 id="語法">語法</h2>
<pre class="syntaxbox"><var>document</var> = <var>element</var>.ownerDocument
</pre>
<ul>
<li><code>document</code> is the {{domxref("Document", "document")}} object parent of the current element.</li>
</ul>
<h2 id="範例">範例</h2>
<pre class="brush:js">// given a node "p", get the top-level HTML child
// of the document object
var d = p.ownerDocument;
var html = d.documentElement;
</pre>
<h2 id="備註">備註</h2>
<p>The <code>document</code> object returned by this property is the main object with which all the child nodes in the actual HTML document are created. If this property is used on a node that is itself a document, the result is <code>null</code>.</p>
<h2 id="規範">規範</h2>
<table class="standard-table">
<tbody>
<tr>
<th>Specification</th>
<th>Status</th>
<th>Comment</th>
</tr>
<tr>
<td>{{SpecName("DOM4", "#dom-node-ownerdocument", "Node.ownerDocument")}}</td>
<td>{{Spec2("DOM4")}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName("DOM3 Core", "core.html#node-ownerDoc", "Node.ownerDocument")}}</td>
<td>{{Spec2("DOM3 Core")}}</td>
<td>No change</td>
</tr>
<tr>
<td>{{SpecName("DOM2 Core", "core.html#node-ownerDoc", "Node.ownerDocument")}}</td>
<td>{{Spec2("DOM2 Core")}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>
<h2 id="瀏覽器相容性">瀏覽器相容性</h2>
{{Compat("api.Node.ownerDocument")}}
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