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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:40:17 -0500
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+---
+title: CSSMediaRule
+slug: Web/API/CSSMediaRule
+tags:
+ - API
+ - CSSOM
+ - 参考
+ - 接口
+translation_of: Web/API/CSSMediaRule
+---
+<div>{{ APIRef("CSSOM") }}</div>
+
+<p><strong><code>CSSMediaRule</code></strong> 是一个表示单个CSS {{cssxref("@media")}} 规则的接口。它实现了 {{domxref("CSSConditionRule")}} 接口,因此也是 {{domxref("CSSGroupingRule")}},也相当于{{domxref("CSSRule")}}中类型值为 <code>4</code> 的规则类型(即<code>CSSRule.MEDIA_RULE</code>)。</p>
+
+<h2 id="语法">语法</h2>
+
+<p>下列语法是使用 <a href="http://dev.w3.org/2006/webapi/WebIDL/" title="http://dev.w3.org/2006/webapi/WebIDL/">WebIDL</a> 格式描述的。</p>
+
+<pre>interface CSSMediaRule : CSSConditionRule {
+ readonly attribute MediaList media;
+}
+</pre>
+
+<h2 id="属性">属性</h2>
+
+<p>作为一个 {{ domxref("CSSConditionRule") }},同时也是 {{domxref("CSSGroupingRule")}} 和 {{ domxref("CSSRule") }},<code>CSSMediaRule</code> 也实现(继承)了来自这些接口的属性。它还有如下属性:</p>
+
+<dl>
+ <dt>{{domxref("CSSMediaRule.media")}} {{readonlyinline}}</dt>
+ <dd>声明了一个 {{domxref("MediaList")}},表示指定目标媒体中的样式信息。</dd>
+</dl>
+
+<h2 id="方法">方法</h2>
+
+<p>作为一个 {{ domxref("CSSConditionRule") }},同时也是 {{domxref("CSSGroupingRule")}} 和 {{ domxref("CSSRule") }},<code>CSSMediaRule</code> 也实现(继承)了来自这些接口的方法。除此之外,没有其他方法。</p>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <thead>
+ <tr>
+ <th scope="col">规范</th>
+ <th scope="col">状态</th>
+ <th scope="col">备注</th>
+ </tr>
+ </thead>
+ <tbody>
+ <tr>
+ <td>{{ SpecName('CSS3 Conditional', '#the-cssmediarule-interface', 'CSSMediaRule') }}</td>
+ <td>{{ Spec2('CSS3 Conditional')}}</td>
+ <td>Make it derived from the {{domxref("CSSConditionRule")}}.</td>
+ </tr>
+ <tr>
+ <td>{{ SpecName('CSSOM', '#the-cssmediarule-interface', 'CSSMediaRule') }}</td>
+ <td>{{ Spec2('CSSOM') }}</td>
+ <td>No changes from {{SpecName('DOM2 Style')}}</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('DOM2 Style', 'css.html#CSS-CSSMediaRule', 'CSSMediaRule') }}</td>
+ <td>{{ Spec2('DOM2 Style') }}</td>
+ <td></td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("api.CSSMediaRule")}}</p>