WakeLock

草案
此页面不完整。

Secure context
This feature is available only in secure contexts (HTTPS), in some or all supporting browsers .

WakeLock interface of the Screen Wake Lock API prevents device screens from dimming or locking when an application needs to keep running.

The system wake lock is exposed through the global Navigator.wakelock 特性。

方法

request
Requests a WakeLockSentinel object, which returns a Promise that resolves with a WakeLockSentinel 对象。

范例

The following asynchronous function requests a WakeLockSentinel object. The WakeLock.request method is wrapped in a try...catch statement to account for if the browser refuses the request for any reason.

const requestWakeLock = async () => {
  try {
    const wakeLock = await navigator.wakeLock.request('screen');
  } catch (err) {
    // the wake lock request fails - usually system related, such low as battery
    console.log(`${err.name}, ${err.message}`);
  }
}
requestWakeLock();
					

规范

规范 状态 Comment
Screen Wake Lock API
The definition of 'WakeLock' in that specification.
未知 初始定义。

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
WakeLock Chrome 84 Edge 84 Firefox No IE No Opera Yes Safari No WebView Android 84 Chrome Android 84 Firefox Android No Opera Android Yes Safari iOS No Samsung Internet Android Yes
request Chrome 84 Edge 84 Firefox No IE No Opera Yes Safari No WebView Android 84 Chrome Android 84 Firefox Android No Opera Android Yes Safari iOS No Samsung Internet Android Yes

图例

完整支持
完整支持
不支持
不支持