SessionStorage API
The SessionStorage API is a web storage mechanism in browsers that allows websites to store key-value pairs of data locally on the client-side, persisting only for the duration of a page session. It is part of the Web Storage API and provides a simple synchronous interface for storing data as strings, with storage limits typically around 5-10 MB per origin. Unlike localStorage, sessionStorage data is cleared when the page session ends, such as when the browser tab or window is closed.
Developers should use the SessionStorage API for temporary data that needs to persist across page reloads within a single tab or window, such as form inputs, user preferences during a session, or state management in single-page applications without server-side storage. It is ideal for scenarios where data should not persist beyond the current browsing session, offering a lightweight alternative to cookies or server-side sessions for client-side state. Use it when you need fast, synchronous access to small amounts of data without the overhead of network requests.