jquery中前台关于日期正确性的校验

 1 function isValidateDate(date) {
 2      date = $.trim(date);
 3      var reg = /^(\d{4})-(\d{2})-(\d{2})$/;
 4      reg.exec(date);
 5      if (!reg.test(date) && RegExp.$2 <= 12 && RegExp.$3 <= 31) {
 6          return false;
 7      }
 8      var year, month, day;
 9      year = parseInt(date.split("-")[0], 10);
10      mOnth= parseInt(date.split("-")[1], 10);
11      day = parseInt(date.split("-")[2], 10);
12      if (! ((1 <= month) && (12 >= month) && (31 >= day) && (1 <= day))) {
13          return false;
14      }
15      if ((month <= 7) && ((month % 2) == 0) && (day >= 31)) {
16          return false;
17      }
18      if ((month >= 8) && ((month % 2) == 1) && (day >= 31)) {
19          return false;
20      }
21      if (mOnth== 2) {
22          if ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0))) {
23              if (day > 29) {
24                  return false;
25              }
26          } else {
27              if (day > 28) {
28                  return false;
29              }
30          }
31      }
32      return true;
33  }