Working with SessionStorage

Session storage is just like local storage, with the exception that session storage is not persistent. That means whenever you close even the tab that sets the session storage, your data will be lost.

A case where session storage could be useful could be when you have an Ajax-based website that loads everything dynamically. You want to create a state-like object, which you can use to store the state of the interface so that, when a user returns to a page they have already visited, you can easily restore the state of that page.

Let's now quickly go over all the methods of session storage.

Creating a session storage entry

To create a key-value pair inside the sessionStorage object, you can use the setItem method, similar to the localStorage object. Just like localStorage, sessionStorage is also a synchronous API, so you can be sure that you'll immediately have access to whatever values you're storing.

Adding an item to session storage is just like working with local...