js时间格式化

 1 /*
 2  * 日期格式化
 3  * =========*/
 4 function dateformat(date, format){
 5     var paddNum = function(num){
 6         num += "";
 7         return num.replace(/^(d)$/, "0$1");
 8     }
 9     if(date == null){
10         return date;
11     }
12     if(typeof date == 'string'){
13         date = new Date(date.replace(/-/g, '/'));
14     }else if(typeof date == 'number'){
15         date = new Date(date);
16     }
17     
18     //时间格式字符
19     var cfg = {
20         yyyy: date.getFullYear(),
21         yy: date.getFullYear().toString().substring(2),
22         MM: paddNum(date.getMonth() + 1),
23         M: date.getMonth() + 1,
24         dd: paddNum(date.getDate()),
25         d: date.getDate(),
26         HH: paddNum(date.getHours()),
27         mm: paddNum(date.getMinutes()),
28         ss: paddNum(date.getSeconds())
29     }
30     format || (format = 'yyyy-MM-dd HH:mm:ss');
31     return format.replace(/([a-z])(1)*/ig, function(m){
32         return cfg[m];
33     })
34 }