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---
title: Screen.colorDepth
slug: Web/API/Screen/colorDepth
tags:
- API
translation_of: Web/API/Screen/colorDepth
---
<div> </div>
<div>{{APIRef("CSSOM View")}}</div>
<h2 id="Summary" name="Summary">概述</h2>
<p>返回屏幕的颜色深度（color 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"><var>bitDepth</var> = window.screen.colorDepth
</pre>
<h2 id="Example" name="Example">示例</h2>
<pre>// 检测屏幕的颜色深度
if ( window.screen.colorDepth < 8) {
// 使用低色彩版本页面
} else {
// 使用常规的彩色版页面
}
</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-colordepth', 'Screen.colorDepth') }}</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.pixelDepth")}}</li>
</ul>
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