How to make an entry in headers?

Question

Angular

When you go to a site with a referer parameter, let's say https://example.com/#/register?referer=ya.ru , you need to overwrite the referer in the headers, how to do this?

Answer 1

No way. #bla-blait doesn’t come to the server at all, and it’s too late to do something in JS, the server has already received the headers and sent the response.