BatteryManager.onchargingchange - Web APIs 编辑

Obsolete

This feature is obsolete.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.

Specifies an event listener to receive chargingchange events. These events occur when the battery charging state is updated.

Syntax

battery.onchargingchange = funcRef

Where battery is a BatteryManager object, and funcRef is a function to be called when the chargingchange event occurs.

Example

HTML Content

<div id="level">(battery level unknown)</div>
<div id="chargingTime">(charging time unknown)</div>

JavaScript Content

navigator.getBattery().then(function(battery) {

   battery.onchargingchange = chargingChange();

   function chargingChange() {
      document.querySelector('#level').textContent = battery.level;
      document.querySelector('#chargingTime').textContent = battery.chargingTime;
   }
});

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• BatteryManager
• Navigator.getBattery