<!DOCTYPE html>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<html>
<head>
<meta charset="utf-8">
</head>
<style>
#demo{
text-align:center;
}
</style>
<body>
<section class="center">
<p class="demo" id="demo"></p>
<script>
// Set the date we're counting down to
var countDownDate = new Date("Jun 10, 2021 18:00:00").getTime();
// Update the count down every 1 second
var x = setInterval(function() {
// Get today's date and time
var now = new Date().getTime();
// Find the distance between now and the count down date
var distance = countDownDate - now;
// Time calculations for days, hours, minutes and seconds
var days = Math.floor(distance / (1000 * 60 * 60 * 24));
var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance % (1000 * 60)) / 1000);
// Output the result in an element with id="demo"
};
document.getElementById("demo").innerHTML = days + "天 " + hours + "小時 " + minutes + "分鐘 " + seconds + "秒 ";
console.log(distance);
// If the count down is over, write some text
if (distance < 0) {
clearInterval(x);
}
}, 1000);
</script>
</body>
</html>
