Key generation in LocalStorage?

Question

JavaScript

Whether it is possible to make the following: there is a form - login and password. I want to save the logs and password in localStorage for the test. How to make it so that after submitting the form by different users, such an entry in the storage occurs, for example:

user1:  'login: azimut, password: 123',
 user2:  'login: bro, password: 234'

That is, so that the key is automatically increased (user1 ...... user12) after the form is submitted and thus there is no overwriting. How to do it?

Answer 1

let keyName = 'user' + localStorage.length;
localStorage.setItem(keyName, 'login: azimut, password: 123');