1.     <div id="fnTimeCountDown" data-end=""> 
2.         <span class="mini">00</span>分 
3.         <span class="sec">00</span>秒 
4.         <span class="hm">000</span> 
5.     </div> 
6. <script type="text/javascript" src="../../js/jquery-2.1.4.min.js"></script> 
7. <script type="text/javascript"> 
8.     $.extend($.fn,{ 
9.         fnTimeCountDown:function(d){ 
10.             this.each(function(){ 
11.                 var $this = $(this); 
12.                 var o = { 
13.                     hm: $this.find(".hm"), 
14.                     sec: $this.find(".sec"), 
15.                     mini: $this.find(".mini"), 
16.                     hour: $this.find(".hour"), 
17.                     day: $this.find(".day"), 
18.                     month:$this.find(".month"), 
19.                     year: $this.find(".year") 
20.                 }; 
21.                 var f = { 
22.                     haomiao: function(n){ 
23.                         if(n < 10)return "00" + n.toString(); 
24.                         if(n < 100)return "0" + n.toString(); 
25.                         return n.toString(); 
26.                     }, 
27.                     zero: function(n){ 
28.                         var _n = parseInt(n, 10);//解析字符串,返回整数 
29.                         if(_n > 0){ 
30.                             if(_n <= 9){ 
31.                                 _n = "0" + _n 
32.                             } 
33.                             return String(_n); 
34.                         }else{ 
35.                             return "00"; 
36.                         } 
37.                     }, 
38.                     dv: function(){ 
39.                         //d = d || Date.UTC(2050, 0, 1); //如果未定义时间，则我们设定倒计时日期是2050年1月1日 
40.                         var _d = $this.data("end") || d; 
41.                         var now = new Date(), 
42.                             endDate = new Date(_d); 
43.                         //现在将来秒差值 
44.                         //alert(future.getTimezoneOffset()); 
45.                         var dur = (endDate - now.getTime()) / 1000 , mss = endDate - now.getTime() ,pms = { 
46.                             hm:"000", 
47.                             sec: "00", 
48.                             mini: "00", 
49.                             hour: "00", 
50.                             day: "00", 
51.                             month: "00", 
52.                             year: "0" 
53.                         }; 
54.                         if(mss > 0){ 
55.                             pms.hm = f.haomiao(mss % 1000); 
56.                             pms.sec = f.zero(dur % 60); 
57.                             pms.mini = Math.floor((dur / 60)) > 0? f.zero(Math.floor((dur / 60)) % 60) : "00"; 
58.                             pms.hour = Math.floor((dur / 3600)) > 0? f.zero(Math.floor((dur / 3600)) % 24) : "00"; 
59.                             pms.day = Math.floor((dur / 86400)) > 0? f.zero(Math.floor((dur / 86400)) % 30) : "00"; 
60.                             //月份，以实际平均每月秒数计算 
61.                             pms.month = Math.floor((dur / 2629744)) > 0? f.zero(Math.floor((dur / 2629744)) % 12) : "00"; 
62.                             //年份，按按回归年365天5时48分46秒算 
63.                             pms.year = Math.floor((dur / 31556926)) > 0? Math.floor((dur / 31556926)) : "0"; 
64.                         }else{ 
65.                             pms.year=pms.month=pms.day=pms.hour=pms.mini=pms.sec="00"; 
66.                             pms.hm = "000"; 
67.                             //alert('结束了'); 
68.                             return; 
69.                         } 
70.                         return pms; 
71.                     }, 
72.                     ui: function(){ 
73.                         if(o.hm){ 
74.                             o.hm.html(f.dv().hm); 
75.                         } 
76.                         if(o.sec){ 
77.                             o.sec.html(f.dv().sec); 
78.                         } 
79.                         if(o.mini){ 
80.                             o.mini.html(f.dv().mini); 
81.                         } 
82.                         if(o.hour){ 
83.                             o.hour.html(f.dv().hour); 
84.                         } 
85.                         if(o.day){ 
86.                             o.day.html(f.dv().day); 
87.                         } 
88.                         if(o.month){ 
89.                             o.month.html(f.dv().month); 
90.                         } 
91.                         if(o.year){ 
92.                             o.year.html(f.dv().year); 
93.                         } 
94.                         setTimeout(f.ui, 1); 
95.                     } 
96.                 }; 
97.                 f.ui(); 
98.             }); 
99.         } 
100.     }); 
101. </script> 
102. <script type="text/javascript"> 
103.  $("#fnTimeCountDown").fnTimeCountDown("2018/07/08 18:45:13"); 
104. </script>