Web Storage

Summary

The umbrella term for `localStorage` and `sessionStorage` — simple synchronous key-value storage built into every browser, no server required. Web Storage is intentionally simple and client-only, so it works well for small preferences but is not a replacement for a server database or secure credential store.

• 1Review the differences between localStorage and sessionStorage side by side. Validate your understanding by applying it in a small practical example.
• 2Build a small 'remember my preference' feature using Web Storage. Keep the first version small, then add one improvement after the core behavior works.
• 3Learn its limitations: string-only values, ~5-10MB limit, synchronous API.