Answer 1

To store

localStorage.setItem(key, value);

To access:

localStorage.getItem(key);

To remove:

localStorage.remove(key)

Answer 2

Also, to clear all:

localStorage.clear();

Answer 3

Arjun Dawande

As you want to store users data in localStorage so here value will be users data and key will be each unique user for example.

There are 2 users Arjun and AJ so data will be store like:

localStorage.setItem('arjun', '1233')
localStorage.setItem('aj', '1233')

So now you can access each users data by using key 'arjun' or 'aj'

Remember value can be same but keys should be uniques.