SessionStorage
SessionStorage is a web storage API that allows web applications to store key-value pairs in a web browser, with data persisting only for the duration of the page session. It provides a simple, synchronous storage mechanism that is scoped to the origin and tab/window, making it ideal for temporary data like form inputs or user preferences during a single browsing session. Unlike cookies, it has a larger storage capacity (typically 5-10 MB) and does not send data to the server with every HTTP request.
Developers should use SessionStorage when they need to store temporary, client-side data that should be cleared when the browser tab or window is closed, such as saving form data to prevent loss on page refresh, managing user interface state (e.g., collapsed panels), or caching non-sensitive session-specific information. It is particularly useful for single-page applications (SPAs) to maintain state without server interaction, but should be avoided for persistent data or sensitive information due to its limited lifespan and lack of encryption.