How to make a login system

Question

I need help I have been assigned to create a student login system for my school website as an exam practical project. currently I can only code in HTML,CSS and JavaScript what else do I need to know??

Answer 1

Look at this code. There is a login system.
https://code.sololearn.com/WQYApZt67VWn/?ref=app

Answer 2

Php and SQL will definitely make your login system more secure but there are caveats like input filtering and validation before accessing the db.
You can use SQL on a db to store/retreive user credentials /permissins.
You can use session variables to store the permissions associated to the logged user to grant selective access to different sections of your site.
You can also use session variables to check for session expiry so that the user must log in again after a periid of inactivity.