jquery制做精致的倒计时特效

<div id="shop_rec"> <ul class="cf">  <li>   <img src="image/goods.jpg" alt="小米 Note 顶配版" />   <div>    <h5>小米 Note 顶配版</h5>    <p>全网通 香槟金 移动联通<br />双4G手机 双卡双待</p>    <em>¥2998<i>起</i></em>    <span class="time" data-starttime="1445982375" data-endtime="1446350400"></span>   </div>  </li>  <li>   <img src="image/goods.jpg" alt="小米 Note 顶配版" />   <div>    <h5>小米 Note 顶配版</h5>    <p>全网通 香槟金 移动联通<br />双4G手机 双卡双待</p>    <em>¥2998<i>起</i></em>    <span class="time" data-starttime="1445912375" data-endtime="1436350400"></span>   </div>  </li> </ul></div>

$(function(){ var abj = $("#shop_rec"),  timeObj = abj.find('.time'); var starttime = timeObj.data('starttime'); // 定时器函数 function actionDo(){  return setInterval(function(){   timeObj.each(function(index, el) {    var t = $(this),     surplusTime = t.data('endtime') -starttime;    if (surplusTime <= 0) {     t.html("活动已经开始");    } else{     var year = surplusTime/(24*60*60*365),      showYear = parseInt(year),      month = (year-showYear)*12,      showMonth = parseInt(month),      day = (month-showMonth)*30,      showDay = parseInt(day),      hour = (day-showDay)*24,      showHour = parseInt(hour),      minute = (hour-showHour)*60,      showMinute = parseInt(minute),      seconds = (minute-showMinute)*60,      showSeconds = parseInt(seconds);     t.html("");     if (showYear>0) {      t.append("<span>"+showYear+"年</span>")     };     if (showMonth>0) {      t.append("<span>"+showMonth+"月</span>")     };     if (showDay>0) {      t.append("<span>"+showDay+"天</span>")     };     if (showHour>=0) {      t.append("<span>"+showHour+"小时</span>")     };     if (showMinute>=0) {      t.append("<span>"+showMinute+"分钟</span>")     };     if (showSeconds>=0) {      t.append("<span>"+showSeconds+"秒</span>")     };    };   });   starttime++;  },1000); // 设定执行或延时时间 }; // 执行它 actionDo();});