<div class="time countdown_1" data-time="1449429731">

    <span class="t_h_1">00</span>

    <i class="lay_line">:</i>

    <span class="t_m_1">00</span>

    <i class="lay_line">:</i>

    <span class="t_s_1">00</span>

</div>

<div class="time countdown_2" data-time="1449456731">

    <span class="t_h_2">00</span>

    <i class="lay_line">:</i>

    <span class="t_m_2">00</span>

    <i class="lay_line">:</i>

    <span class="t_s_2">00</span>  

</div>  

//js2

var plugJs={

    stamp:0,

    tid:1,

    stampnow:'<?php echo NOW_TIME;?>',//统一开始时间戳

    intervalTime:function(){

        if(plugJs.stamp > 0){

            var day = Math.floor(plugJs.stamp / (60 * 60 * 24));

            var hour = Math.floor(plugJs.stamp / (60 * 60)) - (day * 24);

            var minute = Math.floor(plugJs.stamp / 60) - (day * 24 * 60) - (hour * 60);

            var second = Math.floor(plugJs.stamp) - (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;

            jQuery('.t_h_'+plugJs.tid).html(hour);

            jQuery('.t_m_'+plugJs.tid).html(minute);

            jQuery('.t_s_'+plugJs.tid).html(second);

            plugJs.stamp--;

            setTimeout('if(typeof(plugJs.intervalTime) == "function"){plugJs.intervalTime();}',1000);

        }

    },

    timer:function (stampend,tid){

        plugJs.stamp = parseInt(stampend)-parseInt(plugJs.stampnow);//剩余时间戳

        setTimeout('if(typeof(plugJs.intervalTime) == "function"){plugJs.intervalTime();}',1000);

    }

};

jQuery(document).ready(function(){

    var stampend = parseInt(jQuery('.countdown_1').attr('data-time'));//灵活读取表里的结束时间戳

    plugJs.timer(stampend,'1');

});