← React Activity Component: The State Between Render and RemountQuiz

React Activity Component — test yourself

Checks what <Activity mode="hidden"> actually preserves and destroys versus conditional rendering and CSS hiding, including the subtlety the React 19.3 bug fixes exposed.

questions8

pass mark70%

resultsat the end

No account needed. Answer all 8 questions, then see your score with every answer explained and a reference to the spec or MDN — pass and you can claim a certificate.