Browser bank Storage & Cookies Browser / 6 questions Your progress 0 / 6 done Saved in this browser. Reset All 6 Medium 5 Hard 1 Hide done No questions match those filters. 1 Compare `localStorage`, `sessionStorage`, cookies, and IndexedDB by size, lifetime, and access. Medium 2 Why is `localStorage` synchronous a problem, and when should you avoid it? Medium 3 What do the `HttpOnly`, `Secure`, and `SameSite` cookie attributes do? Medium 4 When would you choose IndexedDB, and what makes its API awkward? Medium 5 What is the Cache API, and how does it relate to service workers? Medium 6 How do you persist data offline and sync it when the connection returns? Hard ← Previous DOM & Events Next → Platform APIs & Isolation