<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<span id="time"></span>
<script>
//倒計時
!(function() {
var time = document.querySelector("#time");
var oldtime = new Date(); //傳入的時間
oldtime = oldtime.setDate(oldtime.getDate() + 1);//模擬24小時后的時間
//時間換算
function timer(oldtime) {
var newtime = new Date();
var time = (oldtime - newtime) / 1000;
var d = parseInt(time / (60 * 60 * 24));
var h = parseInt(time / 60 / 60 % 24);
var m = parseInt(time / 60 % 60);
var s = parseInt(time % 60);
return d + "天" + h + "小時" + m + "分鍾" + s + "秒";
}
setInterval(function(){
time.innerHTML = timer(oldtime);
}, 1000)
})()
</script>
</body>
</html>
