Screen.width
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.
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概述
返回屏幕的宽度。
语法
lWidth = window.screen.width
示例
js
// crude way to check that the screen is at 1024x768
if (window.screen.width > 1000) {
// resolution is below 10 x 7
}
备注
注意，该属性返回的宽度值不一定就是浏览器窗口可使用的宽度。当有其他小工具占据了屏幕空间时，浏览器有时不能占用小工具（如任务栏）占据的空间。window.screen.width 和 window.screen.availWidth 两者不同。相关属性 window.screen.height。
在返回该值时，IE 会考虑缩放设置。只有在缩放比例为 100% 时，IE 才返回真实的屏幕宽度。
规范
| Specification |
|---|
| CSSOM View Module # dom-screen-width |