html - ajax causing to stop further actions on php page -

i have page generates tables utilizing loop. (the syntax works fine in php file, copy paste, disregard syntax errors prototype)

<form id="formid" name="formname" method="post" action="">                    <input type="hidden" name="class" value="someclass"> <input type="hidden" name="section" value="somesection"> <select name="school" id="school">            $lengtharray = count($array);                   ($k = 0; $k < $lengtharray ; $k++)   {     <option> . urldecode($array[$k]) . </option>;   }              </select>        </form> 

my ajax following :

$("#school").change(function () {     // resetvalues();      var data = $("#formid").serialize();     jquery.ajax({         url: 'unexisting.php',         type: "post",         datatype: "xml",         data: data,         async: false,         success:function (response)                    {                           alert("data save successful");                   }     }); } 

whenever pick school list first time (there lot in list), able call unexisting.php, once first time, below dropdown lists not function. can see schools in them , select value, doing not invoke unexisting.php file.

where going wrong ? should fix things inside onsuccess ?

check if works

<form id="formid" name="formname" method="post" action="">                    <input type="hidden" name="class" value="someclass"> <input type="hidden" name="section" value="somesection"> <select name="school" class="school" id="school1">            <?php $lengtharray = count($array);                   ($k = 0; $k < $lengtharray ; $k++)   { ?>     <option value="<?php echo urldecode($array[$k]) ?>">        <?php echo urldecode($array[$k]) ?>      </option>        <?php   } ?> </select>        </form> 

ajax part

var current_changed_id = ''; $(".school").change(function () { current_changed_id = $(this).attr('id');  var data = $("#formid").serialize(); jquery.ajax({     url: 'unexisting.php',     type: "post",     datatype: "xml",     data: data,     async: false,     success: listonsuccess });  function listonsuccess(xmlindata)  {      $('#'+current_changed_id).attr("disabled", "disabled");     $('#'+current_changed_id).disabled = true; }