Questions about Basic Auth Implementation

I am using dash-auth (Basic Auth) in my dash app. I want to improve the login experience for the user and want to provide change password etc functionality.

For this, I wanted to convert the login dialog into a simple HTML login form with a link to change password. I tried to reverse engineer and explore the code in dash-auth module but didn't get much luck. Here are my primary questions

1. Where is the JS code which receives the username and password from login dialog and submit to server ?
2. Where is the code which sets the Authorization header before every request to the server?
3. At client side where are we storing the value set in Authorization header ?
4. Where is the code which renders the dialog for username and password.

Please let me know if anything else I would need in order to implement above use case or if there is a better existing implementation which I can reuse.

Thanks!

L’issue indica come aree da esaminare la finestra di dialogo di accesso di dash-auth, l’invio tramite JavaScript, la gestione dell’intestazione Authorization e l’archiviazione lato client; inizia tracciando questi percorsi nel modulo dash-auth. Per completare un contributo, sarebbe necessario concordare l’ambito di un modulo di accesso HTML, di un link per cambiare la password e di qualsiasi supporto lato server prima di poter definire cosa significhi completarlo.