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

You could use the following, just change it for your user name (I use the email address as the user name. I use an empty table cell id="emailError" to hold the message.

The jQuery:

    $('#email').keyup(function(){
      $.ajax({
        type: 'POST',
        url: 'ajax.checkEmail.php',
        data: {e:$('#email').val()},
        success: function(data){
          if(data == 'true'){
            $('#emailError').html('This email is already used');
          }else{
            $('#emailError').html('');
          }
        }
      })
    });

The PHP (ajax.checkEmail.php):

  include('inc.php');

  $query  = 'SELECT COUNT(*) FROM tblcustomers WHERE email = "'.$_POST['e'].'"';
  $result = $dbO->getSingleResult($query);

  if($result > 0)
    print 'true';
  else
    print 'false';