<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
div {
width: 1210px;
margin: 200px auto;
color: red;
text-align: center;
font: 600 30px/30px "simsun";
}
</style>
</head>
<body>
<div></div>
<script>
var div = document.getElementsByTagName("div")[0];
var timer = setInterval(fn,1000);
function fn() {
var nowTime = new Date();
var future = new Date("2018/06/10 09:00:00");
var timeSum = future.getTime() - nowTime.getTime();
var day = parseInt(timeSum/1000/60/60/24);
var hour = parseInt(timeSum/1000/60/60%24);
var min = parseInt(timeSum/1000/60%60);
var sec = parseInt(timeSum/1000%60);
var millsec = parseInt(timeSum%1000);
day = day < 10 ? "0" + day : day;
hour = hour < 10 ? "0" + hour : hour;
min = min < 10 ? "0" + min : min;
sec = sec < 10 ? "0" + sec : sec;
if(millsec < 10) {
millsec = "00" + millsec;
}else if(millsec < 100) {
millsec = "0" + millsec;
}
if(timeSum < 0) {
div.innerHTMl = "距离拼过发布会还有00天00小时00分00秒0000毫秒";
clearInterval(timer);
return;
}
div.innerHTML = "距离苹果发布会还有" + day + "天" + hour + "小时" + min + "分" + sec + "秒" + millsec + "毫秒";
}
</script>
</body>
</html>