The easiest way to check the request in your controller actions to see if its an ajax request then you can use Zend_Json or make your view script an xml return if it is.
$this->_request->isXmlHttpRequest() will return true if your ajax call has set the proper header. If not you can usually set the header with you JS framework.
If you have more specific questions please ask, this is a fairly broad topic and there are many ways to pull it off.
|