This is a demo TYPO3 extension refered in my blog article regarding Extbase backend modules and AJAX.
Article: http://www.derhansen.de/2013/07/typo3-extbase-backend-module-with.html
This TYPO3 extension does the following
- Adds a backend module with a JQuery UI Progressbar
- Updates the JQuery UI progressbar using AJAX
- Uses PHP session variables to store the state of a long taking process
Copy the repositories content to typoconf/ext/extbase_bemodule_ajax and install the extension.