<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>倒计时</title>
</head>
<body>
<div id="div1"></div>
<script>
function countDown(year,month,day,hour,minute,second){
//之所以写month-1是因为在计算机里面传入的七月,实际上指的是八月
var d1 = new Date(year,month-1,day,hour,minute,second);
var d2 = new Date();
//获取两时间相差的秒数
var millisecond1 = d1.getTime();
var millisecond2 = d2.getTime();
if(millisecond1 <= millisecond2){
alert("您输入的时间有误,请输入正确的未来某一时间！");
}else{
var intervalTime = (millisecond1 - millisecond2) / 1000;
var hour1 = parseInt(intervalTime / 3600);
var minute1 = parseInt((intervalTime - hour1*3600) / 60);
var second1 = parseInt(intervalTime - hour1*3600 - minute1*60);
var str = hour1+"小时"+minute1+"分"+second1+"秒";
}
return str;
}
var oDiv = document.getElementById("div1");
setInterval(function(){
oDiv.innerHTML = "本场剩余:"+countDown(2018,9,8,14,30,20);
},1000)
</script>
</body>
</html>
