How do browsers determine the encoding used?

Question

I do understand there are 2 ways to set the encoding:

1. By using Content-Type header.
2. By using meta tags in HTML

Since Content-Type header is

Answer 1

I've encountered problem with output encoding of HTML. If you are creating website or webservice with .i.e nodejs or golang... and you're not sure just add Content-Type charset to header: For example in golang: resp.Header.Set("Content-Type", "text/html; charset=GB18030");