How do I use AJAX properly?

All I could ever receive is "b" :|

URL from the example: jtadeo.com/scirra/ajax/ajaxexample1/ajaxexampleGET.php

Try with https, it works for me.

Refer to the AJAX manual entry. It covers common mistakes, especially when dealing with cross-domain requests, or requests in preview mode.

Try with https, it works for me.

Thanks, that simple solution really works :)