Question

How to detect browser version and display not supported message
I would like to support only IE9 and above and Chrome

Answer 1

I suggest you to check $.support which stands for:

A collection of properties that represent the presence of different
browser features or bugs. Primarily intended for jQuery’s internal
use; specific properties may be removed when they are no longer needed
internally to improve page startup performance.

Previously there was $.browser property which was useful for checking the browser version. However, nowadays it is deprecated due to inconsistency.