DeviceLightEvent

这是 实验性技术
检查 浏览器兼容性表格 在生产中使用这之前。

DeviceLightEvent provides web developers with information from photo sensors or similiar detectors about ambient light levels near the device. For example this may be useful to adjust the screen's brightness based on the current ambient light level in order to save energy or provide better readability.

特性

DeviceLightEvent.value
The level of the ambient light in lux .

范例

window.addEventListener('devicelight', function(event) {
  console.log(event.value);
});
					

规范

No specification.

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
DeviceLightEvent
非标
Chrome No Edge ≤18 — 79 Firefox 62
Disabled
62
Disabled
bug 1462308 .
Disabled From version 62: this feature is behind the device.sensors.ambientLight.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
不支持 22 — 61
Not supported for MacBook with Touch Bar and Windows 7 (see bug 754199 ).
IE No Opera No Safari No WebView Android No Chrome Android No Firefox Android 62
Disabled
62
Disabled
bug 1462308 .
Disabled From version 62: this feature is behind the device.sensors.ambientLight.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
不支持 15 — 61
Opera Android No Safari iOS No Samsung Internet Android No
value
非标
Chrome No Edge 13 — 79 Firefox 62
Disabled
62
Disabled
bug 1462308 .
Disabled From version 62: this feature is behind the device.sensors.ambientLight.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
不支持 22 — 61
Not supported for MacBook with Touch Bar and Windows 7 (see bug 754199 ).
IE No Opera No Safari No WebView Android No Chrome Android No Firefox Android 62
Disabled
62
Disabled
bug 1462308 .
Disabled From version 62: this feature is behind the device.sensors.ambientLight.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
不支持 15 — 61
Opera Android No Safari iOS No Samsung Internet Android No

图例

完整支持
完整支持
不支持
不支持
实验。期望将来行为有所改变。
实验。期望将来行为有所改变。
非标。预期跨浏览器支持较差。
非标。预期跨浏览器支持较差。
见实现注意事项。
用户必须明确启用此特征。
用户必须明确启用此特征。

另请参阅

  1. 环境光事件
  2. DeviceLightEvent
  3. 特性
    1. value
  4. 继承:
    1. Event
  5. Related pages for Ambient Light Events
    1. Window.ondevicelight