jQuery validate plugin on DIV

Question

I am trying to use the validate plugin on a div as shown in the answer to this question:

Answer 1

//HTML


                
                Please enter a valid Mobile No
            


    //Java Script
     $("#getOtp").click(function(){
         jQuery(document).ready(function(){





            var MobileNo = jQuery("#mobileNo").val();
            var MobileNoLength = MobileNo.length;  
            var zipRegex = /^\d{10}$/;
             var mobileNo = $("#mobileNo").val();

            if (!zipRegex.test(MobileNo))
            { 
               jQuery('#mobileno_message').show();


            }
            else
            { 

              // success!

                 jQuery('#mobileno_message').hide();
                 $.ajax({
                type : 'POST',
                url  : '',
                data : {Otp_MobileNo:mobileNo,},
                dataType    : 'json',
                beforeSend: function()
                { 
                  $("#error").fadeOut();
                },
                success :  function(response)
                { 
                alert(response.message_text);
                $("#check-otp").delay().animate({
                    height: 'toggle',
                  },
                  "slow");
                $("#getOtp").hide();
                }
             });





            }

          });



           });