js基础

#time{width: 230px;
height:40px;
background:rgba(201,302,205,3)
}



function leftDays(){
var hour=0, min=0, sec=0, time=0;
var to= new Date;
var end= new Date(2018,7,24,17,59,59,999);
hour=Math.floor((end.getTime()-to.getTime())/(1000*60*60));
minute=Math.floor((end.getTime()-to.getTime())/(1000*60)-hour*60);
second=Math.floor((end.getTime()-to.getTime())/1000-hour*60*60-minute*60);
timer=hour+"小时"+minute+"分"+second+"秒";
document.getElementById("time").innerHTML=timer;
}
setInterval(leftDays)