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+---
+title: Screen.pixelDepth
+slug: Web/API/Screen/pixelDepth
+tags:
+  - API
+translation_of: Web/API/Screen/pixelDepth
+---
+<div>{{APIRef("CSSOM View")}}</div>
+
+<h2 id="Summary" name="Summary">概述</h2>
+
+<p>返回屏幕的位深度/色彩深度（bit depth）。根据CSSOM( CSS对象模型 )视图，为兼容起见，该值总为24。</p>
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox">depth = window.screen.pixelDepth
+</pre>
+
+<h2 id="Example" name="Example">示例</h2>
+
+<pre class="brush:js">// 如果没有足够的位深度/色彩深度（bit depth），就选择一个更纯的颜色
+if ( window.screen.pixelDepth &gt; 8 ) {
+  document.style.color = "#FAEBD7";
+} else {
+  document.style.color = "#FFFFFF";
+}
+</pre>
+
+<h2 id="Specification" name="Specification">规范</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{ SpecName('CSSOM View', '#dom-screen-pixeldepth', 'Screen.pixelDepth') }}</td>
+   <td>{{ Spec2('CSSOM View') }}</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="See_also" name="See_also">相关链接</h2>
+
+<ul>
+ <li>{{domxref("Screen.colorDepth")}}</li>
+</ul>