javascript - jQuery update record only once unless I refresh the page -


i using jquery update database record. updates fine first time, never update record again unless page reloaded.

i using jquery because don't want refresh page. code shown below. please how can amend code allow user update record many times wants?

$('body').on('click', '#subform', function() {   $.post($("#form_id").attr("action"), $("#form_id").serialize(), function(info) {     $("#result").html(info);   });    clearinput();    $("html, body").animate({     scrolltop: 0   }, "slow"); });  $('body').on('submit', '#form_id', function(event) {   event.preventdefault();   return false; });  function clearinput() {   $("#form_id")[0].reset(); } 
 <div id="result"></div> <form action="upgrade.php" method="post" id="form_id">   <select name="item">     <option><?php echo $item;?></option>     <?php /* php script */ ?>     </select>   <select name="category">     <option><?php echo $category;?></option>     <?php /* php script */ ?>     </select>   <button id="subform">save</button> </form>


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