---
title: Entity
slug: Web/API/Entity
translation_of: Web/API/Entity
---
<p>{{APIRef("DOM")}} {{draft}} {{obsolete_header}}</p>

<p>对DTD实体的只读引用. 也继承 {{domxref("Node")}} 的方法和属性。</p>

<h2 id="属性">属性</h2>

<dl>
 <dt>{{domxref("Entity.publicId")}} {{ReadOnlyInline}}</dt>
 <dd>Is a {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("Entity.systemId")}} {{ReadOnlyInline}}</dt>
 <dd>Is a {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("Entity.notationName")}}{{ReadOnlyInline}}</dt>
 <dd>Is a {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("Entity.inputEncoding")}}{{ReadOnlyInline}}</dt>
 <dd>Is a {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("Entity.xmlEncoding")}}{{ReadOnlyInline}}</dt>
 <dd>Is a {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("Entity.xmlVersion")}}{{ReadOnlyInline}}</dt>
 <dd>Is a {{domxref("DOMString")}}.</dd>
</dl>

<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("DOM3 Core", "core.html#ID-527DCFF2", "Entity")}}</td>
   <td>{{Spec2("DOM3 Core")}}</td>
   <td><code>inputEncoding</code>, <code>xmlEncoding</code>, and <code>xmlVersion</code> were added</td>
  </tr>
  <tr>
   <td>{{SpecName("DOM2 Core", "core.html#ID-527DCFF2", "Entity")}}</td>
   <td>{{Spec2("DOM2 Core")}}</td>
   <td>No change</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM1', 'level-one-core.html#ID-527DCFF2', 'Entity')}}</td>
   <td>{{Spec2('DOM1')}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>