Returns the rotation of the device around the X axis; that is, the number of degrees, ranged between -180 and 180, by which the device is tipped forward or backward. See Orientation and motion data explained for details.
Syntax
var beta = instanceOfDeviceOrientationEvent.beta;
Specifications
| 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), 6 |
? | ? | ? |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | 3.0 | 3.6 (mozOrientation), 6 |
Not supported | Not supported | 4.2 |
Gecko-specific notes
Firefox 3.6, 4, and 5 supported mozOrientation instead of the standard DeviceOrientationEvent interface