DeviceOrientationEvent.alpha
Baseline 2023Newly available
Since September 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
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 # ref-for-dom-deviceorientationevent-alpha③ |