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 了解细节。

句法

var alpha = instanceOfDeviceOrientationEvent.alpha;
					

规范

规范 状态 注释
DeviceOrientation Event Specification 编者草案 最初的规范。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据
桌面 移动
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
alpha Chrome 7 Edge 12 Firefox 6 IE No Opera Yes Safari ? WebView Android Yes Chrome Android Yes Firefox Android 6 Opera Android Yes Safari iOS 4.2 Samsung Internet Android Yes

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

另请参阅

元数据

  • 最后修改: