How to create a link (script) with transmitted data?

Question

JavaScript

Hi all!
There is a link on site A, this link leads to site B, how to set up a link to site A so that when you go to site B, you can see that this is a transition from site A?

Answer 1

This is called utm tags. Put GET parameters in url A, read/process/store these parameters on B.

Answer 2

http referer header