Phoenix LiveView quiz

Test your Phoenix LiveView knowledge with a free interactive quiz — 20 questions with answers and explanations. No signup needed to play.

What is a "LiveView.JS hook" used for when a template element needs custom client-side JavaScript behavior LiveView doesn't natively provide?

1. What is a "LiveView.JS hook" used for when a template element needs custom client-side JavaScript behavior LiveView doesn't natively provide?
2. Why does LiveView avoid re-rendering and re-sending the entire page HTML on every state update?
3. What does the LiveView lifecycle callback `mount/3` do?
4. What is a trade-off of LiveView's server-centric architecture compared to a fully client-rendered SPA?
5. What is `phx-debounce` used for on a LiveView form input?
6. What is the purpose of `handle_event/3` in a LiveView module?
7. What happens on the very first HTTP request to a LiveView-backed route, before the WebSocket connection is established?
8. What is a `live_component` used for in LiveView?
9. In a LiveView template, what does `phx-click="increment"` do on a button?
10. What is `assign/3` used for inside a LiveView module?
11. How does LiveView keep the client UI in sync with server state?
12. What does a "LiveComponent" being "stateful" mean, as opposed to a "function component" in LiveView?

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