how to pass whole data using ajax in php using keypress event -

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i passing empcode using key press event, whole empcode not transfered , last digit cut.

here code:

$(document).ready(function(){         $("#e_code").keypress(function(){              //var datastring=document.getelementbyid("e_code").value;             var datastring = 'e_code='+ $(this).val();             $.ajax({              type: "post",              url: "getdata.php",              data: datastring,              cache: false,              success: function (html) {             $('#details').html(html);             $('#custtrnhistory').show()           }        });     });      });    on getdata file code

write code in keyup instead of keypress

$("#e_code").keyup(function(){

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