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Specifies an event listener to receive chargingtimechange events. These events occur when the battery chargingTime is updated.
Syntax
battery.onchargingtimechange = funcRef
Where battery is a BatteryManager object, and funcRef is a function to be called when the chargingtimechange 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.onchargingtimechange = chargingTimeChange();
function chargingTimeChange(){
document.querySelector('#level').textContent = battery.level;
document.querySelector('#chargingTime').textContent = battery.chargingTime;
}
});
Specifications
| Specification | Status | Comment |
|---|---|---|
| Battery Status API | Candidate Recommendation | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 39.0 | 10 (10) moz 16 (16)[1] |
No support | 25 | No support |
| Feature | Android | Android Webview | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | No support | 40.0 | 10.0 (10) moz 16.0 (16)[1] |
No support | 25[2] | No support | 42.0[2] |
[1] Disabled by default in Firefox 10.0, but can be enabled setting the preference dom.battery.enabled to true. Starting with Firefox 11.0, mozBattery is enabled by default. The Battery API is currently supported on Android, Windows, and Linux with UPower installed. Support for MacOS is available starting with Gecko 18.0 (Firefox 18.0 / Thunderbird 18.0 / SeaMonkey 2.15). Firefox also provide support for the deprecated navigator.battery.
[2] Values for BatteryManager.chargingTime and BatteryManager.dischargingTime are always equal to Infinity.