Screen.mozBrightness

在此页

句法
规范
浏览器兼容性
相关话题

非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。

弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

Indicates how bright the screen's backlight is, on a scale from 0 (very dim) to 1 (full brightness); this value is a double-precision float.

You can read and write this attribute even when the screen is disabled, but the backlight is off while the screen is disabled. If you write a value of X into this attribute, the attribute may not have the same value X when you later read it. Most screens don't support as many different brightness levels as there are doubles between 0 and 1. The value's precision might be reduced before storing it.

句法

let screenBrightness = window.screen.mozBrightness;

规范

Not part of specification.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`mozBrightness` 弃用非标	Chrome No	Edge No	Firefox 12	IE No	Opera No	Safari No	WebView Android No	Chrome Android No	Firefox Android 14	Opera Android No	Safari iOS No	Samsung Internet Android No

图例

完整支持
不支持
非标。预期跨浏览器支持较差。
弃用。不要用于新网站。
用户必须明确启用此特征。

元数据

最后修改： May 18, 2019

CSS Object Model
Screen
特性
1. availHeight
2. availLeft
3. availTop
4. availWidth
5. colorDepth
6. height
7. left
8. mozBrightness
9. mozEnabled
10. onorientationchange
11. orientation
12. pixelDepth
13. top
14. width
方法
1. lockOrientation()
2. unlockOrientation()
继承：
1. EventTarget
Related pages for CSSOM

在此页

句法

规范

浏览器兼容性

图例

相关话题