html5 - Is it possible to do user authentication without DB or PHP? -

I am trying to find a solution from which I can implement user authentication (login / password) within HTML5 and Language or database without using any server

Is this also possible or am I just being mad?

Thank you.

You have to store every user's login and password in the database and use PHP to access it. Have to do. It is believed that you are storing information of many users and if someone wants to login then matches the password / login entered in that account, when they create an account.