i newbie this my first project,I don't know how to resolve any problems about the repetition of data i have an input page. it consist of 2 textfield:

1. Modeli,

2. Seri,

and one combobox: 1. line.

i want if there is input twice, I mean here is a double input data, will be out warning "data already exists".

? ben bunu nasıl ben böyle deneyin ama çalışmıyor:

 $("#input").click(function() {
         if($("#submit").valid()) {
                 var params=$("#submit").serialize();
                 $.ajax({
                         type:"post",
                         url:"process1.php",
                         data:params,
                         cache :false,
                         async :false,
                         success : function() {
                                    $('input[name^="text"]').change(function() {
                                          var $current = $(this);
                                          $('input[name^="text"]').each(function() {
                                                 if ($(this).val() == $current.val() && $(this).attr('id') != $current.attr('id'))
                                                 {
                                                    alert('data already exists!');
                                                    }
                                          });
                                    });
                                  $("#showmodel").val($("#model").val());
                                  $("#showline").val($("#line").val());