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");

});