You may use fnDrawCallback or fnInfoCallback to detect changes, when next is clicked both of them are fired.
But beware, page changes are not the only source that can fire those callbacks.
For DataTables 1.10.0+
The option is now drawCallback
You may use fnDrawCallback or fnInfoCallback to detect changes, when next is clicked both of them are fired.
But beware, page changes are not the only source that can fire those callbacks.
The option is now drawCallback