Screen

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

* Some parts of this feature may have varying levels of support.

Screen 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 window.screen 获取它。

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。

属性

Screen.availTop: Specifies the y-coordinate of the first pixel that is not allocated to permanent or semipermanent user interface features.
Screen.availLeft: 返回屏幕左边边界的第一个像素点
Screen.availHeight: 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.
Screen.availWidth: 返回窗口中水平方向可用空间的像素值。
Screen.colorDepth: 返回屏幕的色彩深度。
Screen.height: 以像素为单位返回屏幕的高度。
Screen.left: 返回从最左边界到当前屏幕的像素值。
Screen.orientation: 返回当前屏幕的转向。
Screen.pixelDepth: 获取屏幕的像素点
Screen.top: 返回最上边界到当前屏幕的像素值。
Screen.width: 返回屏幕的宽度。
Screen.mozEnabled: 布尔值。如果设置为 false 将关闭设备的屏幕。
Screen.mozBrightness: 控制设备屏幕的亮度。期望参数是 0-1.0 之间的浮点数。

方法继承自其父接口 EventTarget。

if (screen.pixelDepth < 8) {
  // use low-color version of page
} else {
  // use regular, colorful page
}

Specification
CSSOM View Module # the-screen-interface

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