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BatteryManager: chargingchange event

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

The chargingchange event of the BatteryManager interface is fired when the battery charging property is updated.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener("chargingchange", (event) => { })

onchargingchange = (event) => { }

Event type

A generic Event.

Example

HTML

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

JavaScript

navigator.getBattery().then((battery) => {
  battery.onchargingchange = () => {
    document.querySelector("#level").textContent = battery.level;
    document.querySelector("#chargingTime").textContent = battery.chargingTime;
  };
});

Specifications

Specification
Battery Status API> # dfn-chargingchange>
Battery Status API> # dom-batterymanager-onchargingchange>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`chargingchange_event`	38	79	43–52	25	No	38	43–52	25	No	3.0	38	No