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    Returns the rotation of the device around the Z axis; that is, the number of degrees by which the device is being twisted around the center of the screen. See Orientation and motion data explained for details.


    var alpha = instanceOfDeviceOrientationEvent.alpha;


    Specification Status Comment
    Device Orientation Events Working Draft Initial specification.

    Browser compatibility

    Compatibility for DeviceOrientationEvent:

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 7.0 3.6 (mozOrientation),
    ? ? ?
    Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
    Basic support 3.0 3.6 (mozOrientation),
    Not supported Not supported 4.2

    Gecko-specific notes

    Firefox 3.6, 4, and 5 supported mozOrientation instead of the standard DeviceOrientationEvent interface

    See also

    Document Tags and Contributors

    Contributors to this page: Sheppy, fscholz, Jeremie, teoli, jsx, kohei.yoshino, kscarfone
    Last updated by: fscholz,