i am getting an error of undefined index :username in php file.. what to do?
event to handel when button2 is clicked
$("#button2").click(function(){
var username= $("#PM_username_field").val();
$.post('abc.php',{username: username },function(data){
$("#error_pm_username").show().load('abc.php');
});
});
<?php
$username=$_POST['username'];
echo $username;
?>