CDATASection 接口用于表示 CDATA 片段（CDATA section）。在 XML 中， CDATA 可以直接包含未经转义的文本。比如 < 和 &，只要位于 CDATA 片段中，它们就不需要被转义，保持原样就可以了。
在 XML 中，一个 CDATA 片段格式如下：
<![CDATA[ ... ]]>
例如：
<foo>这是一个CDATA section: <![CDATA[ < > & ]]> 其中包含了一些没有转义的字符。 </foo>
唯一的例外就是，在一个 CDATA 片段中不可以使用 CDATA 片段本身的闭合标签片段:
<![CDATA[ ]]> 会引发错误 ]]>
注意，CDATA 片段不应该在 HTML 中被使用；它只在 XML 中有效。
<div id="interfaceDiagram" style="display: inline-block; position: relative; width: 100%; padding-bottom: 20%; vertical-align: middle; overflow: hidden;"><svg style="display: inline-block; position: absolute; top: 0; left: 0;" viewbox="-50 0 600 120" preserveAspectRatio="xMinYMin meet"><a xlink:href="https://developer.mozilla.org/zh-CN/docs/Web/API/EventTarget" target="_top"><rect x="1" y="1" width="110" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text x="56" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">EventTarget</text></a><polyline points="111,25 121,20 121,30 111,25" stroke="#D4DDE4" fill="none"/><line x1="121" y1="25" x2="151" y2="25" stroke="#D4DDE4"/><a xlink:href="https://developer.mozilla.org/zh-CN/docs/Web/API/Node" target="_top"><rect x="151" y="1" width="75" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text x="188.5" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">Node</text></a><polyline points="226,25 236,20 236,30 226,25" stroke="#D4DDE4" fill="none"/><line x1="236" y1="25" x2="266" y2="25" stroke="#D4DDE4"/><a xlink:href="https://developer.mozilla.org/zh-CN/docs/Web/API/CharacterData" target="_top"><rect x="266" y="1" width="130" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text x="331" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">CharacterData</text></a><polyline points="396,25 406,20 406,30 396,25" stroke="#D4DDE4" fill="none"/><line x1="406" y1="25" x2="436" y2="25" stroke="#D4DDE4"/><a xlink:href="https://developer.mozilla.org/zh-CN/docs/Web/API/Text" target="_top"><rect x="436" y="1" width="75" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text x="473.5" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">Text</text></a><polyline points="511,25 521,20 521,30 511,25" stroke="#D4DDE4" fill="none"/><line x1="521" y1="25" x2="529" y2="25" stroke="#D4DDE4"/><line x1="529" y1="25" x2="529" y2="90" stroke="#D4DDE4"/><line x1="529" y1="90" x2="512" y2="90" stroke="#D4DDE4"/><a xlink:href="https://developer.mozilla.org/zh-CN/docs/Web/API/CDATASection" target="_top"><rect x="391" y="65" width="120" height="50" fill="#F4F7F8" stroke="#D4DDE4" stroke-width="2px" /><text x="451" y="94" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">CDATASection</text></a></svg></div>
a:hover text { fill: #0095DD; pointer-events: all;}
属性
这个接口没有特有的属性，但实现了父接口 Text 的属性。
方法
这个接口没有特有的方法，但实现了父接口 Text 的方法。
规范
| 规范 | 状态 | 备注 |
|---|---|---|
| DOM CDATASection |
Living Standard | Re-added in issue #295 due to web breakage |
| DOM4 CDATASection |
Obsolete | Removed in favour of the more generic Text interface |
| Document Object Model (DOM) Level 3 Core Specification CDATASection |
Obsolete | No change from Document Object Model (DOM) Level 2 Core Specification |
| Document Object Model (DOM) Level 2 Core Specification CDATASection |
Obsolete | No change from Document Object Model (DOM) Level 1 Specification. |
| Document Object Model (DOM) Level 1 Specification CDATASection |
Obsolete | Initial definition |
浏览器兼容性
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CDATASection | Chrome Full support 1 | Edge Full support 12 | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android ? | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android ? |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown