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| <!DOCTYPE html>
<html>
<head>
<title>电池状态API示例</title>
<script>
window.onload = function () {
function updateBatteryStatus(battery) {
document.querySelector('#charging').textContent = battery.charging ? '正在使用交流电' : '正在使用电池';
document.querySelector('#level').textContent = battery.level;
document.querySelector('#dischargingTime').textContent = battery.dischargingTime / 60;
}
navigator.getBattery().then(function (battery) {
updateBatteryStatus(battery);
battery.onchargingchange = function () {
updateBatteryStatus(battery);
};
battery.onlevelchange = function () {
updateBatteryStatus(battery);
};
battery.ondischargingtimechange = function () {
updateBatteryStatus(battery);
};
});
};
</script>
</head>
<body>
<div id="charging">(charging state unknown)</div>
<div id="level">(battery level unknown)</div>
<div id="dischargingTime">(discharging time unknown)</div>
</body>
</html>
|
