js密码的匹配正则

 1  function checkDatetime(){
 2         var a = servertime ;   //(new Date()).format(‘yyyy-MM-dd‘);
 3         var b = jzsj;  //‘2015-11-30‘;
 4         var arr = a.split("-");
 5         var starttime = new Date(arr[0], arr[1], arr[2]);
 6         var starttimes = starttime.getTime();
 7     
 8         var arrs = b.split("-");
 9         var lktime = new Date(arrs[0], arrs[1], arrs[2]);
10         var lktimes = lktime.getTime();
11          if (starttimes >= lktimes) {
12             return false;
13         }else{
14             return true;
15         }
16     }