过时
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
devicelight
event is fired when fresh data is available from a light sensor.
注意 : This event has been disabled by default in Firefox 62, behind the device.sensors.ambientLight.enabled preference ( bug 1462308 ).
| 冒泡 | No |
|---|---|
| 可取消 | No |
| 接口 | SensorCallback |
| 目标 |
DefaultView (
window
)
|
| 特性 | 类型 | 描述 |
|---|---|---|
value
只读
|
Double (float) | The sensor data for ambient light in Lux. |
min
只读
|
Double (float) | The minimum value in the range the sensor detects (if available, 0 otherwise). |
max
只读
|
Double (float) | The maximum value in the range the sensor detects (if available, 0 otherwise). |
window.addEventListener('devicelight', function(event) {
console.log(event.value);
});
| 规范 | 状态 | 注释 |
|---|---|---|
|
Ambient Light Sensor
The definition of 'Ambient Light Events' in that specification. |
候选推荐 | Removed from specification |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DeviceLightEvent
非标
|
Chrome No | Edge ≤18 — 79 |
Firefox
62
Disabled
|
IE No | Opera No | Safari No | WebView Android No | Chrome Android No |
Firefox Android
62
Disabled
|
Opera Android No | Safari iOS No | Samsung Internet Android No |
完整支持
不支持
实验。期望将来行为有所改变。
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。