I will add authentication to your web app

The vast majority of websites include some kind of login-logout system - user authentication. If your application makes use of any kind of user-generated content, it will almost certainly require users to make accounts, and that requires some means of logging in. I will add an authentication system to your JavaScript app, so you can include user-generated content and therefore maximize user engagement.

Service includes any of the following, as necessary:

• Sessions
• JSON web tokens
• Cookies
• Any relevant front-end JavaScript (e.g. code for a form)
• Any relevant back-end JavaScript

I will stay in contact with you throughout the development process, so you always know what's happening with your code. The new code will be fully commented, so you know exactly what does what in case you ever need to make a modification.