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+---
+title: Node.ownerDocument
+slug: Web/API/Node/ownerDocument
+tags:
+  - API
+  - DOM
+  - Gecko
+  - Property
+  - 属性
+translation_of: Web/API/Node/ownerDocument
+---
+<div>{{ APIRef("DOM")}}</div>
+
+<p><strong>Node.ownerDocument </strong>只读属性会返回当前节点的顶层的 document 对象。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="eval"><em>document</em> = node.ownerDocument
+</pre>
+
+<ul>
+ <li><code>document</code> 是当前元素的 <a href="https://developer.mozilla.org/zh-CN/docs/DOM/document"><code>document</code></a> 对象，其是当前元素的祖先。</li>
+</ul>
+
+<h2 id="Example" name="Example">例子</h2>
+
+<pre>// 得到p元素所在文档的HTML节点
+d = p.ownerDocument;
+html = d.documentElement;
+</pre>
+
+<h2 id="Notes" name="Notes">注意</h2>
+
+<p><code>被此属性返回的 document</code> 对象是在实际的HTML文档中的所有子节点所属的主对象<code>。如果在文档节点自身上使用此属性，则结果是null</code>。</p>
+
+<h2 id="规范">规范</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="浏览器兼容性">浏览器兼容性</h2>
+
+<p>{{ CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{ CompatVersionUnknown() }}</td>
+   <td>{{ CompatVersionUnknown() }}<sup>[1]</sup></td>
+   <td>6.0<sup>[2]</sup></td>
+   <td>{{ CompatVersionUnknown() }}</td>
+   <td>{{ CompatVersionUnknown() }}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatUnknown() }}<sup>[1]</sup></td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+   <td>{{ CompatUnknown() }}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] 从 Gecko 9.0 {{ geckoRelease("9.0") }} 开始, <code>一个由脚本生成的</code>DocumentType类型的节点(节点类型{{ domxref("Node.nodeType") }}的值为 <code>Node.DOCUMENT_TYPE_NODE</code> 也就是 10)的<code>ownerDocument</code>属性的值不再是null. 而是调用<a href="/zh-cn/DOM/DOMImplementation.createDocumentType" title="zh-cn/DOM/DOMImplementation.createDocumentType"><code>document.implementation.createDocumentType()</code></a> 方法创建该节点的文档节点.</p>
+
+<p>[2] <a href="http://msdn.microsoft.com/en-us/library/ie/ms534315(v=vs.85).aspx">http://msdn.microsoft.com/en-us/library/ie/ms534315(v=vs.85).aspx</a></p>