<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id="box">
还剩：
<label for="" id="hour">00</label>小时
<label for="" id="minute">00</label>分
<label for="" id="second">00</label>秒
</div>
<script type="text/javascript">
var o_b=document.getElementById("box");
//获取界面标签对象
var o_h=document.getElementById("hour");
var o_m=document.getElementById("minute");
var o_s=document.getElementById("second");
function showTime(){
var nowDate=new Date();
//把结束时间转化为日期对象
console.log(nowDate)
var nowTime=nowDate.getTime();
var endDate=new Date("2019/01/20 00:00:00");
var endTime=endDate.getTime();
//距离结束时间剩余的秒数
var diffTime=parseInt((endTime-nowTime)/1000);
console.log(diffTime)
if(diffTime<=0){
o_b.innerHTML="秒杀结束";
clearInterval(t);//清除定时器
}
//将剩余时间(秒)转换为时、分、秒
var hour=parseInt(diffTime/60/60);
var minute=parseInt(diffTime/60%60);
var second=diffTime%60;
if(hour<10){
hour="0"+hour;
}
if(minute<10){
minute="0"+minute;
}
if(second<10){
second="0"+second;
}
console.log(o_h);
console.log(o_m);
console.log(o_s);
o_h.innerHTML=hour;
o_m.innerHTML=minute;
o_s.innerHTML=second;
// setTimeout(showTime,1000);
}
showTime();
var t=setInterval(showTime,1000);
console.log(t);
</script>
</body>
</html>
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