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---
title: Screen
slug: Web/API/Screen
tags:
- API
- 参考
- 接口
translation_of: Web/API/Screen
---
<div>{{APIRef("CSSOM View")}}</div>
<p><code>Screen</code> 接口表示一个屏幕窗口，往往指的是当前正在被渲染的window对象，可以使用 <code>window.screen</code> 获取它。</p>
<p>请注意：由浏览器决定提供屏幕对象，此对象一般通过当前浏览器窗口活动状态动态检测来得到。</p>
<h2 id="Example" name="Example">属性</h2>
<dl>
<dt>{{domxref("Screen.availTop")}}</dt>
<dd>Specifies the y-coordinate of the first pixel that is not allocated to permanent or semipermanent user interface features.</dd>
<dt>{{domxref("Screen.availLeft")}}</dt>
<dd>返回屏幕左边边界的第一个像素点</dd>
<dt>{{domxref("Screen.availHeight")}}</dt>
<dd>Specifies the height of the screen, in pixels, minus permanent or semipermanent user interface features displayed by the operating system, such as the Taskbar on Windows.</dd>
<dt>{{domxref("Screen.availWidth")}}</dt>
<dd>返回窗口中水平方向可用空间的像素值。</dd>
<dt>{{domxref("Screen.colorDepth")}}</dt>
<dd>返回屏幕的色彩深度。</dd>
<dt>{{domxref("Screen.height")}}</dt>
<dd>以像素为单位返回屏幕的高度。</dd>
<dt>{{domxref("Screen.left")}}</dt>
<dd>返回从最左边界到当前屏幕的像素值。</dd>
<dt>{{domxref("Screen.orientation")}}</dt>
<dd>返回当前屏幕的转向。</dd>
<dt>{{domxref("Screen.pixelDepth")}}</dt>
<dd>获取屏幕的像素点</dd>
<dt>{{domxref("Screen.top")}}</dt>
<dd>返回最上边界到当前屏幕的像素值。</dd>
<dt>{{domxref("Screen.width")}}</dt>
<dd>返回屏幕的宽度。</dd>
<dt>{{domxref("Screen.mozEnabled")}} {{gecko_minversion_inline("12.0")}}</dt>
<dd>布尔值。如果设置为false讲关闭设备的屏幕。</dd>
<dt>{{domxref("Screen.mozBrightness")}} {{gecko_minversion_inline("12.0")}}</dt>
<dd>控制设备屏幕的亮度。期望参数是0-1.0之间的浮点数。</dd>
</dl>
<h3 id="Events_handler">Events handler</h3>
<dl>
<dt>{{domxref("Screen.onorientationchange")}}</dt>
<dd>对{{event("orientationchange")}} 事件的时间处理器。</dd>
<dt> </dt>
</dl>
<h2 id="方法">方法</h2>
<dl>
<dt>{{domxref("Screen.lockOrientation")}}</dt>
<dd>锁定屏幕转向(仅在全屏或者已安装的APP中生效)</dd>
<dt>{{domxref("Screen.unlockOrientation")}}</dt>
<dd>解锁屏幕转向(仅在全屏或者已安装的APP中生效)</dd>
</dl>
<p>方法继承于 {{domxref("EventTarget")}}</p>
<p>{{page("/en-US/docs/Web/API/EventTarget","Methods")}}</p>
<h2 id="Example" name="Example">示例</h2>
<pre class="brush:js">if (screen.pixelDepth < 8) {
// use low-color version of page
} else {
// use regular, colorful page
}
</pre>
<h2 id="Specification" name="Specification">标准文档说明</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', '#the-screen-interface', 'Screen') }}</td>
<td>{{ Spec2('CSSOM View') }}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<div class="hidden">
<p>The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
</div>
<p>{{Compat("api.Screen")}} </p>
|
