php - how to pass value from dynamic combo box into textbox? -

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i working php. when user selects item combo box, corresponding item display in second combo box. need store second combo box value textbox further use. 

  <script type="text/javascript" src="jquery.min.js"></script>         <script type="text/javascript">             $(function(){                 $('#combo').change(function(){                     console.log($(this));                     $.get( "abc.php" , { option : $(this).val() } , function ( data ) {                         $ ( '#combob' ) . html ( data ) ;                     } ) ;                 });             });         </script>     </head>     <body>                  <form>                     <select name="combo" id="combo">                         <option value="">-- select</option>                         <option value="1"> personnel</option>                         <option value="2"> area layout</option>                           <option value="3">conference rooms</option>                             <option value="4"> small office</option>                              </select>  abc.php <?php     $options = array (          1 => array (          '--',             '15 x 20 (300 sq. ft.)' ,             '15’ x 15’ (225 sq. ft.)',             ' 10’ x 15’ (150 sq. ft.)',             '12’ x 10’ (120 sq. ft.)'         ) ,          2 => array (              '10’ x 10’ (100 sq. ft.)' ,             ' 8’ x 6’ (48 sq. ft.)',             '5’ x 5’ (25 sq. ft.)'         ) ,          3 => array (              '15’ x 25’ (375 sq. ft.)' ,             '15’ x 20’ (300 sq. ft.)',             '15’ x 15’ (225 sq. ft.)'         ) ,          4 => array (              '8’ x 8’ (64 sq. ft.)' ,             '8’ x 6’ (48 sq. ft.)',             '6’ x 6’ (36 sq. ft.)',             '4’ x 6’ (24 sq. ft.)'         )      ) ;       foreach ( $options [ $_get [ 'option' ] ] $item ) {         printf ( '<option value="%s">%s</option>' , $item , $item ) ;     }     ?>

a javascript code like:

$('#combob').change(function(){ $('#textbox').val($(this).val()); });

will trick

edit example on how modify html

<script type="text/javascript" src="jquery.min.js"></script>         <script type="text/javascript">             $(function(){                 $('#combo').change(function(){                     console.log($(this));                     $.get( "abc.php" , { option : $(this).val() } , function ( data ) {                         $ ( '#combob' ) . html ( data ) ;                     } ) ;                 });                 $('#combob').change(function(){ $('#textboxb').val($(this).val()); });             });         </script>     </head>     <body>                  <form>                     <select name="combo" id="combo">                         <option value="">-- select</option>                         <option value="1"> personnel</option>                         <option value="2"> area layout</option>                           <option value="3">conference rooms</option>                             <option value="4"> small office</option>                              </select>     </form>     <select id="combob"></select>     <input type="textbox" id="textboxb" value="" />

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