DeviceOrientationEvent.alpha
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2023年9月.
返回设备旋转时 Z 轴的值；即：设备围绕屏幕中心扭转的角度。详细信息请查看方向和运动数据。
Syntax
var alpha = instanceOfDeviceOrientationEvent.alpha;
Specifications
| Specification |
|---|
| Device Orientation and Motion # dom-deviceorientationevent-alpha |