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

This works just check made the same code

      jQuery.validator.addMethod("usernameCheck", function(username) {
      var isSuccess = false;
      $.ajax({ url: "checkusr.php",
      data: "username=" + username,
      async: false,
      success:
      function(msg) { 

      if(msg ==0)
      {
  isSuccess=false;
      }
      else 
      {

       isSuccess=true;
      }
        }


       });

        return isSuccess;
         },"Username not available");

PHP SIDE CODE

           if ($obj->checkUsername($_GET['username'],"artist")> 0 )
       {
       echo 0;
        }
    else 
    {
  echo 1;
 }

  }