ajax 拼接数据 后台时间戳倒计时

 1.拼接获取到时间戳，给span 绑定data-time="'+classes.activity_end+'"

2.在拼接之后放入父元素内的时候 获取到所有的时间戳  循环，  调用countDown方法来实现页面

function countDown(dateline,elem){

var timer=null,

    times=dateline - new Date()/1000;

if(times <= 0){

    return 0 + '天' + 0 + '时' + 0 + ' 分' + 0 + '秒';

}

 

timer=setInterval(function(){

    var current_time=Math.floor(new Date()/1000)

times=dateline-current_time;

if(times<=0){

    clearInterval(timer);

$(elem).html( 0 + '天' + 0 + '时' + 0 + ' 分' + 0 + '秒');

    }

var day=0,

hour=0,

minute=0,

second=0;//时间默认值

if(times > 0){

day = Math.floor(times / (60 * 60 * 24));

hour = Math.floor((times- day * 24*60 * 60) / (60 * 60)) ;

minute = Math.floor((times- (day * 24 * 60* 60) - (hour * 60* 60) )/ 60) ;

second = Math.floor(times) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);

}

if (day <= 9) day = '0' + day;

if (hour <= 9) hour = '0' + hour;

if (minute <= 9) minute = '0' + minute;

if (second <= 9) second = '0' + second;

$(elem).html(day + '天' + hour + '时' + minute + ' 分' + second + '秒');

},1000);

}