alert show 4 times in this code

I have this code:

    <script  language="javascript">
  $(function() {
    $('#items,#button-search').hide();
    $("#companies").click(function() { 
      $(this).attr("value",""); 
      $('#address,#new-company-form').empty();
    });
    $( "#companies" ).autocomplete({
      source: ";companies",
      minLength: 2,
      select: function( event, ui ) {
        $('#address').show();
        if(ui.item.id == "create-new-company") {
          // call the new company form
          $('#address').empty();
          //$('#new-company-form').load('/companies/;new_resource?type=company #autoform',
          $('#new-company-form').load(';company_form #autoform');
        } // end 'if'
        else
        {
          $('#new-company-form').empty();
          $.ajax({
            type: 'GET',
            url: ';addresses?company=' + ui.item.id,
            dataType: 'json',
              // process the addresses
              success: function(json) {
                var opts = '';
                $.each(json, function(k, v) {
                  opts += '<option value="'+k+'">' + v + '</option>';
                });
                $('#address').html('<select>' + opts + '</select>');
                // we click on a select value .change(function () {
                $("#address").change(function () {
                  var id = $(":selected", this).val();
                  if(id == "create-new-address") {
                    $('#new-address-form').load(';address_form #autoform');
                  }
                  else
                  {开发者_运维问答
                    alert('Request completed' + id);
                  //  pass the id value to the application
                  }
                }) // end click event
              }
            }); //end ajax call to address

        } // end else
            } // end select address
        }); // end autocomplete
    }); // end function
</script>

everytime i run the form, the 'alert('Request completed' + id);' on line 41 displays 4 times when i click on an option value.

Is there any way to improve this?

Thanks

Norman

You are setting jQuery event handlers inside your autoComplete select function. So, everytime the select function for autocomplete is called, you do this:

$("#address").change(function() {

That means that this event handler is getting added over and over again (thus it gets called multiple times). You need to add that event handler once outside the autocomplete framework, not inside the autocomplete function or the select handler.

I think you want it to be like this:

<script language="javascript">
$(function() {
    $('#items,#button-search').hide();
    $("#companies").click(function() {
        $(this).attr("value", "");
        $('#address,#new-company-form').empty();
    });
    // we click on a select value .change(function () {
    $("#address").change(function() {
        var id = $(":selected", this).val();
        if (id == "create-new-address") {
            $('#new-address-form').load(';address_form #autoform');
        } else {
            alert('Request completed' + id);
            //  pass the id value to the application
        }
    }) // end click event
    $("#companies").autocomplete({
        source: ";companies",
        minLength: 2,
        select: function(event, ui) {
            $('#address').show();
            if (ui.item.id == "create-new-company") {
                // call the new company form
                $('#address').empty();
                //$('#new-company-form').load('/companies/;new_resource?type=company #autoform',
                $('#new-company-form').load(';company_form #autoform');
            } // end 'if'
            else {
                $('#new-company-form').empty();
                $.ajax({
                    type: 'GET',
                    url: ';addresses?company=' + ui.item.id,
                    dataType: 'json',
                    // process the addresses
                    success: function(json) {
                        var opts = '';
                        $.each(json, function(k, v) {
                            opts += '<option value="' + k + '">' + v + '</option>';
                        });
                        $('#address').html('<select>' + opts + '</select>');
                    }
                }); //end ajax call to address
            } // end else
        } // end select address
    }); // end autocomplete
}); // end function
</script>