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RotationRate.alpha

« DOM Reference

Summary

Returns the rate at which the device is rotating around each of its axes in degrees per second.

Note: If the hardware isn't capable of providing this information, this property returns null.

Syntax

var rates = instanceOfDeviceMotionEvent.rotationRate;

Value

The rotationRates property is a read only object describing the rotation rates of the device around each of its axes:

alpha
The rate at which the device is rotating about its Z axis; that is, being twisted about a line perpendicular to the screen.
beta
The rate at which the device is rotating about its X axis; that is, front to back.
gamma
The rate at which the device is rotating about its Y axis; that is, side to side.

Specifications

Specification Status Comment
Device Orientation Events Working Draft Initial specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support (Yes) 6 (6) ? ? ?
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support (Yes) 6.0 (6) Not supported Not supported 4.2

See also

Document Tags and Contributors

 Last updated by: Jeremie,