点击按钮出现60秒倒计时js代码

html

<div class="img_font" id="2_time">距离结束: 00:00:00</div>
<div class="money_font" id="mo_time2">已结束</div>

js

<script type="text/javascript">
    var interval = 1000;
    function ShowCountDown(year,month,day,hour,divname,moname,number)
    {
        var now = new Date();
        var endDate = new Date(year, month-1, day,hour);
        var leftTime=endDate.getTime()-now.getTime();
        var leftsecond = parseInt(leftTime/1000);
        var day1=Math.floor(leftsecond/(60*60*24));
        var hour=Math.floor((leftsecond-day1*24*60*60)/3600);
        var minute=Math.floor((leftsecond-day1*24*60*60-hour*3600)/60);
        var second=Math.floor(leftsecond-day1*24*60*60-hour*3600-minute*60);
        var cc = document.getElementById(divname);
        var dd= document.getElementById(moname);
        minute=checkTime(minute);
        second=checkTime(second);
        if(leftTime<=0){
            dd=innerHTML= "已结束";
//            cc.innerHTML = "距离结束: "+hour+":"+minute+":"+second;
            return ;
        }
        cc.innerHTML = "距离结束: "+hour+":"+minute+":"+second;
        if(number>0){
            dd.style.cssText="background-color: red;";
            dd.innerHTML= "已抢"+number;
        }
    }
    function checkTime(i)
    {
        if (i<10)
        {i="0" + i}
        return i
    }
    setInterval(function(){
        ShowCountDown(2017,12,4,18,'1_time','mo_time1',0);
        ShowCountDown(2017,12,4,17,'2_time','mo_time2',123);
        ShowCountDown(2017,12,4,20,'3_time','mo_time3',324);
        ShowCountDown(2017,12,4,21,'4_time','mo_time4',534);
    }, interval);

</script>