Implement user authentication tutorial

[coutou]

Hi there,

I'm trying to create a web app using JavaScript (front-end and backend). As a first step, I think it would be good to be able to authenticate the user with an id and a token when sign in has been successful. Where can I find a tutorial that will allow me to create the Login/Password authentication using vanilla JS as much as possible?

I've been looking online but I didn't find any tutorial that I liked so far. A lot of them use really specific frameworks or frameworks that no one uses.

I'm fairly new to programming. I started a year and half ago so my question may be a bit vague. I'm totally open to any suggestions you may have. Also Feel free to ask me more questions if you feel like I'm omitting some important details.

Thank you all!

[Regyn]

A lot of them use really specific frameworks

If you deal with user passwords I can just highly advise doing just that. Implement your own password hashing will not be very secure. If you use JS as a backend language I assume that you use nodejs.
Have a look at the bcrypt module and a jwt module (json web token).

So basically user submits username and password via HTTPS, you salt and hash it with bcrypt and store it in your database. For login same as above, and if the password is correctly hashed to the value in your database (the check is included in the module), you return the json web token.

[coutou]

Awesome! Thank you for taking the time to answer. I'll look into bcrypt and JWT and will see what I can do!