files/zh-cn/web/api/documentorshadowroot/stylesheets/index.html


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---
title: DocumentOrShadowRoot.styleSheets
slug: Web/API/DocumentOrShadowRoot/styleSheets
translation_of: Web/API/DocumentOrShadowRoot/styleSheets
---
<div>{{SeeCompatTable}}{{APIRef("Shadow DOM")}}</div>

<p><span class="seoSummary"><strong><code>styleSheets是</code></strong>{{domxref("DocumentOrShadowRoot")}}接口定义的只读属性，它会返回一个{{domxref('StyleSheetList')}} / {{domxref('CSSStyleSheet')}} 对象，这个对象对应的是通过引入或者嵌入文档中的样式表。</span></p>

<h2 id="示例代码">示例代码</h2>

<pre class="brush: js notranslate">function getStyleSheet(unique_title) {
  for (var i=0; i&lt;document.styleSheets.length; i++) {
    var sheet = document.styleSheets[i];
    if (sheet.title == unique_title) {
      return sheet;
    }
  }
}
</pre>

<h3 id="说明">说明</h3>

<p>返回的列表中，排序规则如下：</p>

<ul>
 <li>header标签中通过link标签引入的样式优先，多个link样式表以出现顺序排序</li>
 <li>接着是在文档中定义的样式表，存在多个这样的样式表时，以<a href="https://dom.spec.whatwg.org/#concept-tree-order">tree order</a>（译注：先序深度优先遍历树）规则进行排序</li>
</ul>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">规范</th>
   <th scope="col">状态</th>
   <th scope="col">说明</th>
  </tr>
  <tr>
   <td>{{SpecName('Shadow DOM','#extensions-to-the-documentorshadowroot-mixin','DocumentOrShadowRoot')}}</td>
   <td>{{Spec2('Shadow DOM')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>


<p>{{Compat("api.DocumentOrShadowRoot.styleSheets")}}</p>