Web/API/DeviceLightEvent/value

The value property provides the current level of the ambient light.

Syntax

var light = instanceOfDeviceLightEvent.value;

A positive number representing a light intensity expressed in lux.

Specification	Status	Comment
Ambient Light SensorThe definition of 'Ambient Light Events' in that specification.	Candidate Recommendation	Initial definition

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`value` Experimental'Non-standard'	Chrome No support No	Edge No support 13 — 79	Firefox Full support 62 Notes' Disabled' Full support 62 Notes' Disabled' Notes' See 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. No support 22 — 61 Notes' Notes' Not supported for MacBook with Touch Bar and Windows 7 (see bug 754199).	IE No support No	Opera No support No	Safari No support No	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 62 Notes' Disabled' Full support 62 Notes' Disabled' Notes' See 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. No support 15 — 61	Opera Android No support No	Safari iOS No support No	Samsung Internet Android No support No

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.
Non-standard. Expect poor cross-browser support.': Non-standard. Expect poor cross-browser support.
See implementation notes.': See implementation notes.
User must explicitly enable this feature.': User must explicitly enable this feature.