php - Retrieving value of a select box populated by an ajax call -

here 2 select boxes. trying value of c pass on in form. select box c populated ajax call below can't seem useable value pass on form. (in simplest form looking var a= 'select box c') can send 'a' in form:

many in advance people x

<select name="list-select" id="list-select">     <option value="">please select..</option>     <option value="chemical">chemical</option>     <option value="hardware">hardware</option> </select>  <select name="c" id="c"></select> 

here jquery bit:

<script src="http://code.jquery.com/jquery-latest.min.js"></script> <script>     $(document).ready(function ($) {         var list_target_id = 'c'; //first select list id         var list_select_id = 'list-select'; //second select list id         var initial_target_html = '<option value="">please select colour...</option>'; //initial prompt target select          $('#' + list_target_id).html(initial_target_html); //give target select prompt option          $('#' + list_select_id).change(function (e) {             //grab chosen value on first select list change             var selectvalue = $(this).val();              //display 'loading' status in target select list             $('#' + list_target_id).html('<option value="">loading...</option>');              if (selectvalue == "") {                 //display initial prompt in target select if blank value selected                 $('#' + list_target_id).html(initial_target_html);             } else {                 //make ajax request, using selected value                 $.ajax({                     url: 'http://www.mypropertyviewing.com/client_order_form_v1.1/selector.php?svalue=' + selectvalue,                     success: function (output) {                         $('#' + list_target_id).html(output);                     },                     error: function (xhr, ajaxoptions, thrownerror) {                         alert(xhr.status + " " + thrownerror);                     }                 });             }         });     }); </script> 

use

selectvalue=this.value //instead  of selectvalue =$(this).val();