JQuery Username Validation

Question

I\'m new to JQuery and attempting to write a script to check username availability. My problem is that no matter what I type, I always get back \"This username is already in

Answer 1

Try changing the PHP source to return "1" or "0":

include('database_connection.php');                                  
if (isset($_POST['username'])) {                                                               
    $username = mysql_real_escape_string($_POST['username']);                                  
    $check_for_username = mysql_query("SELECT user_id FROM users WHERE username='$username'"); 
    if (mysql_num_rows($check_for_username)) {
        echo "TRUE";                                                                           
    } else {
        echo "FALSE";                                                                           //No Record Found - Username is available
    }
}
?>

and then change your JS to parse that as an integer:

success:
 function(msg) { 
   isSuccess = parseInt(msg);
 }