This property indicates the rate of rotation around the Z axis -- in degrees per second -- in a DeviceRotationRate object.


var alpha = deviceRotationRate.alpha;

This property is read-only.

Return value

A double indicating the rate of rotation around the Z axis, in degrees per second. See Accelerometer values explained for details.


Specification Status Comment
Device Orientation Events Working Draft Initial specification.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support ? Yes ? ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? Yes ? ? ? ?

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Contributors to this page: connorshea, erikadoyle, fscholz, teoli, MHasan, kscarfone, Sheppy
Last updated by: connorshea,