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    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 Events
    The definition of 'Ambient Light Events' in that specification.
    Candidate Recommendation Initial specification

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported 22.0 (22.0) (Mac OS X only) Not supported Not supported Not supported
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support Not supported Not supported 15.0 (15.0) Not supported Not supported Not supported

    Gecko-specific notes

    The devicelight event is implemented, and preference is 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

    Contributors to this page: Sheppy, fscholz, Jeremie, teoli, tregagnon, sobering, kscarfone, KuroTora
    Last updated by: fscholz,