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

<p><code><strong>CharacterData</strong></code> 介面表示了含有字元的 {{domxref("Node")}} 物件。<code>CharacterData</code> 為抽象介面，代表不會有型別為 <code>CharacterData</code> 的物件。物件是由其子介面，如 {{domxref("Text")}}、{{domxref("Comment")}} 或 {{domxref("ProcessingInstruction")}} 等非抽象介面來實作。</p>

<p>{{InheritanceDiagram}}</p>

<h2 id="屬性">屬性</h2>

<p><em>Inherits properties from its parent, {{domxref("Node")}}, and implements the {{domxref("ChildNode")}} and {{domxref("NonDocumentTypeChildNode")}} interface.</em></p>

<dl>
 <dt>{{domxref("CharacterData.data")}}</dt>
 <dd>Is a {{domxref("DOMString")}} representing the textual data contained in this object.</dd>
 <dt>{{domxref("CharacterData.length")}} {{readonlyInline}}</dt>
 <dd>Returns an <code>unsigned long</code> representing the size of the string contained in <code>CharacterData.data</code>.</dd>
 <dt>{{domxref("NonDocumentTypeChildNode.nextElementSibling")}} {{readonlyInline}}</dt>
 <dd>Returns the {{domxref("Element")}} immediately following the specified one in its parent's children list, or <code>null</code> if the specified element is the last one in the list.</dd>
 <dt>{{domxref("NonDocumentTypeChildNode.previousElementSibling")}} {{readonlyInline}}</dt>
 <dd>Returns the {{domxref("Element")}} immediately prior to the specified one in its parent's children list, or <code>null</code> if the specified element is the first one in the list.</dd>
</dl>

<h2 id="Methods" name="Methods">方法</h2>

<p><em>Inherits methods from its parent, {{domxref("Node")}}, and implements the {{domxref("ChildNode")}} <em>and {{domxref("NonDocumentTypeChildNode")}} </em>interface.</em></p>

<dl>
 <dt>{{domxref("CharacterData.appendData()")}}</dt>
 <dd>Appends the given {{domxref("DOMString")}} to the <code>CharacterData.data</code> string; when this method returns, <code>data</code> contains the concatenated {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("CharacterData.deleteData()")}}</dt>
 <dd>Removes the specified amount of characters, starting at the specified offset, from the <code>CharacterData.data</code> string; when this method returns, <code>data</code> contains the shortened {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("CharacterData.insertData()")}}</dt>
 <dd>Inserts the specified characters, at the specified offset, in the <code>CharacterData.data</code> string; when this method returns, <code>data</code> contains the modified {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("ChildNode.remove()")}} {{experimental_inline}}</dt>
 <dd>Removes the object from its parent children list.</dd>
 <dt>{{domxref("CharacterData.replaceData()")}}</dt>
 <dd>Replaces the specified amount of characters, starting at the specified offset, with the specified {{domxref("DOMString")}}; when this method returns, <code>data</code> contains the modified {{domxref("DOMString")}}.</dd>
 <dt>{{domxref("CharacterData.substringData()")}}</dt>
 <dd>Returns a {{domxref("DOMString")}} containing the part of <code>CharacterData.data</code> of the specified length and starting at the specified offset.</dd>
</dl>

<h2 id="Specification" name="Specification">規範</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', '#characterdata', 'CharacterData')}}</td>
   <td>{{Spec2('DOM WHATWG')}}</td>
   <td>Added implemention of the {{domxref("ChildNode")}} and {{domxref("NonDocumentTypeChildNode")}} interface.</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM3 Core', 'core.html#ID-FF21A306', 'CharacterData')}}</td>
   <td>{{Spec2('DOM3 Core')}}</td>
   <td>No change from {{SpecName('DOM2 Core')}}.</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM2 Core', 'core.html#ID-FF21A306', 'CharacterData')}}</td>
   <td>{{Spec2('DOM2 Core')}}</td>
   <td>No change from {{SpecName('DOM1')}}.</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM1', 'level-one-core.html#ID-FF21A306', 'CharacterData')}}</td>
   <td>{{Spec2('DOM1')}}</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.CharacterData")}}

<h2 id="參見">參見</h2>

<ul>
 <li><a href="/zh-TW/docs/DOM/DOM_Reference" title="/en-US/docs/DOM/DOM_Reference">The DOM interfaces index</a>.</li>
</ul>