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• 句法
• 规范
• 浏览器兼容性
• 相关话题

onactivate EventHandler is called when one of the Sensor interface's child interfaces becomes active.

句法

sensorInstance.onactivate = function
sensorInstance.addEventListener('activate', function() { ... })
					

因为 传感器 is a base class, onactivate may only be used on one of its derived classes.

规范

规范	状态	注释
Generic Sensor API The definition of 'onactivate' in that specification.	候选推荐	初始定义。

浏览器兼容性

The compatibility table in 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
onactivate	Chrome 69	Edge ≤79	Firefox ?	IE ?	Opera 56	Safari ?	WebView Android 69	Chrome Android 69	Firefox Android ?	Opera Android 48	Safari iOS ?	Samsung Internet Android 10.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

元数据

• 最后修改： Mar 18, 2019

相关话题

1. 传感器
2. 特性

   1. activated
   2. hasReading
   3. onactivate
   4. onerror
   5. onreading
   6. timestamp
3. 方法

   1. start()
   2. stop()
4. 继承：

   1. EventTarget