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

Syntax

var light = instanceOfDeviceLightEvent.value;

Value

A positive number representing a light intensity expressed in lux.

Specifications

Specification Status Comment
Ambient Light Sensor
The definition of 'Ambient Light Events' in that specification.
Editor's Draft Initial definition

Browser compatibility

  
Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support(Yes) 22.0 (22.0)[1] No support No support No support
  
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support(Yes) 15.0 (15.0)[1] No support No support No support

[1] The devicelight event is implemented and preference enabled by default in Firefox Mobile for Android (15.0) and in Firefox OS (B2G). Starting with Gecko 22.0 (Firefox 22.0 / Thunderbird 22.0 / SeaMonkey 2.19) a desktop implementation for Mac OS X is also available. Support for Windows 7 is in progress (see bug 754199).

See also

Document Tags and Contributors

 Last updated by: erikadoyle,