需求：
实时显示pk赛截止时间，当前截止时间为当天22:00
代码都很简单，可以根据自己的需求适当调整
function timerFn(ele){
var myInterval = setInterval(function () {
var date = new Date();
var y = date.getFullYear();
var m = date.getMonth();
var d = date.getDate();
var time = new Date(y, m, d, 22, 00, 0);
var num = time.getTime() - date.getTime();
var day = parseInt(num / (24 * 60 * 60 * 1000));
num = num % (24 * 60 * 60 * 1000);
var hour = parseInt(num / (60 * 60 * 1000));
num = num % (60 * 60 * 1000);
var minute = parseInt(num / (60 * 1000));
num = num % (60 * 1000);
var seconde = parseInt(num / 1000);
hour = hour < 10 ? '0' + hour : hour;
minute = minute < 10 ? '0' + minute : minute;
seconde = seconde < 10 ? '0' + seconde : seconde;
var timeStr;
if(seconde>=0){
timeStr ="PK倒计时 <span>"+hour+"</span>:<span>"+minute+"</span>:<span>"+seconde+"</span> 每天00:00开赛";
ele.html(timeStr);
}else{
timeStr ="PK倒计时 <span>00</span>:<span>00</span>:<span>00</span> 每天00:00开赛";
ele.html(timeStr);
clearInterval(myInterval);
}
}, 1000)
}
