js控制电池

js控制电池

  1. 判断设备是否在充电

    navigator.getBattery().then(function(battery){ if(battery.charging) { alert("电池正在充电"); }else { alert("电池没有充电"); }})
  2. 获取设备电量

    navigator.getBattery().then(function(battery){ alert("电池电量" + battery.level * 100 + "%");})
  3. 电池状态监听器

    navigator.getBattery().then(function(battery){ battery.addEventListener("chargingchange", function() { console.log("电池状态:", battery.charging); }) battery.addEventListener("levelchange", function() { console.log("电池电量:", battery.level * 100 + "%"); }) battery.addEventListener("chargingtimechange", function() { console.log("电池充满还需:", battery.chargingTime + "秒"); }) battery.addEventListener("dischargingtimechange", function() { console.log("电池电量还能支撑:", battery.dischargingTime + "秒"); })})

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