In my application, I'm loading some table using AJAX. But when user's session times out it gives me login page as response that gets loaded in table area.
I would like to redirect to login page may be in javascript when session timeout occurs during AJAX call.
When rendering the login page you could append a custom HTTP header to the response: X-LOGIN-PAGE: True. Then perform your AJAX call and check for the presence of this custom header in the success callback. Act accordingly if present.
You can check for the authentication in the method being called by the AJAX call and if not found can just return a flag. In the AJAX handler in the client page, you can detect and redirect to the login page.