DeviceOrientationEvent: alpha property

Secure context

The alpha read-only property of the DeviceOrientationEvent interface 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.

Value

A number.

Specifications

Browser compatibility

See also

• Detecting device orientation
• Orientation and motion data explained
• deviceorientation event
• deviceorientationabsolute event