BatteryManager: dischargingtimechange event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Want more browser support for this feature? Tell us why.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The dischargingtimechange event of the BatteryManager interface is fired when the battery dischargingTime property is updated.
Syntax
Use the event name in addEventListener():
js
addEventListener("dischargingtimechange", (event) => { })
Alternatively, assign to the event handler property of the interface:
js
ondischargingtimechange = (event) => { }
Event type
A generic Event.
Example
HTML
html
<div id="level">(battery level unknown)</div>
<div id="chargingTime">(charging time unknown)</div>
JavaScript
js
navigator.getBattery().then((battery) => {
battery.ondischargingtimechange = () => {
document.querySelector("#level").textContent = battery.level;
document.querySelector("#chargingTime").textContent = battery.chargingTime;
};
});
Specifications
| Specification |
|---|
| Battery Status API # dfn-dischargingtimechange |
| Battery Status API # dom-batterymanager-ondischargingtimechange |