DeviceLightEvent.value

在此页

value property provides the current level of the ambient light.

var light = instanceOfDeviceLightEvent.value;

A positive number representing a light intensity expressed in lux .

规范	状态	注释
Ambient Light Sensor The definition of 'Ambient Light Events' in that specification.	候选推荐	初始定义

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
`value` 非标	Chrome No	Edge 13 — 79	Firefox 62 Disabled 62 Disabled 见 bug 1462308 . Disabled From version 62: this feature is behind the `device.sensors.ambientLight.enabled` preference (needs to be set to `true` ). To change preferences in Firefox, visit about:config. 不支持 22 — 61 Not supported for MacBook with Touch Bar and Windows 7 (see bug 754199 ).	IE No	Opera No	Safari No	WebView Android No	Chrome Android No	Firefox Android 62 Disabled 62 Disabled 见 bug 1462308 . Disabled From version 62: this feature is behind the `device.sensors.ambientLight.enabled` preference (needs to be set to `true` ). To change preferences in Firefox, visit about:config. 不支持 15 — 61	Opera Android No	Safari iOS No	Samsung Internet Android No