Print Select Option Using Ajax, Jquery and a PHP Echo -

i have looked throughout stackoverflow , seen numerous examples of none give answer how echo. have select dropdown on page called testing.php:

<form id="projects" action="project-add.php" method="post"> <select name="territory" id="territory"> <option value="australia">australia</option> <option value="argentina">argentina</option> </select>  // fair few more form fields here  <input type="submit" value="submit project"> </form> 

i need whatever selected here available echo php variable later down form without need press button.

i have following script in :

<script type='text/javascript'>//<![cdata[  $(window).load(function(){ $('#territory').change(function(e) {     e.preventdefault();     var selectedoption = $(this).find('option:selected');     $('#territory option').removeattr('selected');     $(selectedoption).attr('selected','selected');     var selectedoptionvalue = $(selectedoption).val();     var selectedoptiontext = $(selectedoption).text();       $.ajax({     url: 'testing.php',      type: 'post',      data: {data : selectedoptiontext},     datatype: 'text',     success: function(data){ }  });  });//]]>    });  </script> 

i print:

<? echo $_post['data']; ?> 

but isn't working. appreciated.

thanks in advance

demo

1. need able trigger change

<select name="territory" id="territory">   <option value="">please select</option>   <option value="australia">australia</option>   <option value="argentina">argentina</option> </select> 

2. call php selected option

$(function() { // on page load   $('#territory').on("change",function(e) {     $("#someoutputcontainerid").empty(); // clear container     var selectedoptionvalue = $(this).val();     if (selectedoptionvalue) { // in case select "please select"       $.ajax({         url: 'testing.php',          type: 'post',          data: {data : selectedoptionvalue },         datatype: 'text',         success: function(data){           $("#someoutputcontainerid").html(data);         }       });     }   }); }); 

the selected value available in testing.php $_post["data"] , echoed in testing.php show in container