When I tried to use post with datatable, it will send endless data request to server, it seems a serious bug.
Steps to re-produce it:
1) Open below sample, it's cloned from an online sample, and changed some properties like size, datafetch, url (post->):
2) Click any page > 1, like Page 2, Page 7, etc
3) You will see endless (dead loop) data request sent to server
It's tested in latest Google Chrome.
It seems GET method is working ok.