Chapter 24Offline Apps: Web Storage

Web storage (also known as DOM storage) is a simple client-side, key-value system that lets us store data in the client. It consists of two parts: localStorage and sessionStorage.

The main difference between localStorage and sessionStorage is persistence. Data stored using localStorage persists from session to session. It’s available until the user or the application deletes it.

Data stored using sessionStorage, on the other hand, persists only as long as the browsing context is available. Usually this means that we lose our sessionStorage data once the user closes the browser window or tab. It may, however, persist in browsers that allow users to save browsing sessions.

In this chapter, we’ll talk about some ...

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