I am a beginner and recently started learning about authorization and authentication.

So i came across **JWT** and started looking for tutorials how to implement it in **node js**.
Appearantly there is a jwt middleware for nodejs called "jsonwebtoken".

I have watched some videos about it and learned that you can access the created token by accessing the **header**: (req.headers)
[Video I got the information from](https://youtu.be/mbsmsi7l3r4?t=765)

[code](https://i.stack.imgur.com/LPRYq.png)

now I'm dealing with the problem **where** that "header" is coming from and **where** it is **stored**. Is it a html header or a specefic cookie. I know there are 3 storages (local, session and cookie storage) but in what of these 3 is it stored.

I am really confused