We're looking for a person or people to help audit MDN to find places we could speed up. Is this you or someone you know? Check out the RFP: https://mzl.la/2IHcMiE


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

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ?(Yes) ? ? ? ?
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

Document Tags and Contributors

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