mozilla
Your Search Results

    levelchange

    The levelchange event is fired when the level attribute of the battery API has changed.

    General info

    Specification
    Battery
    Interface
    Event
    Bubbles
    No
    Cancelable
    No
    Target
    BatteryManager
    Default Action
    None

    Properties

    The event callback doesn't receive any event objects, but properties can be read from the BatteryManager object received from the navigator.getBattery method.

    Property Type Description
    BatteryManager.level double (float) The system's battery charging level scaled from 0 to 1.0. Returns 0 if the battery is empty and the system is about to suspend. Returns 1.0 if the battery is full, if the implementation is unable to report the battery's level, or if there is no battery attached to the system. Read only.

    Example

    navigator.getBattery().then(function(battery) {
    
      console.log("Battery level: " + battery.level * 100 + " %");
    
      battery.addEventListener('levelchange', function() {
        console.log("Battery level: " + battery.level * 100 + " %");
      });
    
    });
    

    Document Tags and Contributors

    Contributors to this page: Sheppy, franciov, ethertank, louisremi, teoli
    Last updated by: franciov,