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DeviceLightEvent.value

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

var light = instanceOfDeviceLightEvent.value;

A positive number representing a light intensity expressed in lux.

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

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	No	Yes	62 Disabled 62 Disabled 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. 22 — 61 Not supported for MacBook with Touch Bar and Windows 7 (see bug 754199).	No	No	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	No	No	Yes	62 Disabled 62 Disabled 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. 15 — 61	No	No	?