emacs lisp, how to get buffer major mode?

Question

I have tried to search Google and look in the manual, but still cannot find how to get major mode of a buffer object. Can you help me with an example or a reference. Thank

Answer 1

Well, describe-mode takes an optional buffer argument, but that displays the help... and I'm not exactly sure what it returns...

But that's the best I could find in a brief search... sorry...