时间比较验证

jQuery(function(){       
 
      jQuery.validator.addMethod("compareDate", function(value,element) {  
      var startDate = $("#trainBeginTime").val();
      var endDate = $("#trainEndTime").val();
          var date1 = new Date(Date.parse(startDate.replace("-", "/")));
          var date2 = new Date(Date.parse(endDate.replace("-", "/")));
          if(startDate=="" && endDate=="") return true;
          return date1 <= date2;       
      }, "结束时间大于开始时间");     
    
  });