Web Storage (localStorage, sessionStorage, cookies)

The key difference between localStorage and sessionStorage lies in their persistence: 1) localStorage data persists until explicitly cleared by code or browser settings, even after browser restarts, 2) sessionStorage data is cleared when the browser tab/window is closed, 3) Both are part of the Web Storage API but serve different use cases, 4) localStorage is ideal for long-term data storage like user preferences, 5) sessionStorage is perfect for temporary session-specific data, 6) Both survive page refreshes within their respective scopes, 7) Neither storage type has an automatic expiration mechanism like cookies, 8) The persistence model affects how they should be used in different application scenarios.