React Components, Props, and State
Build confidence in React Components, Props, and State with this 20-question mock test, designed for frontend and full-stack interviews. The attempt uses a 30-minute timer so you can practise with clear conditions. ⚙️ Skills tested: The questions cover AI-assisted testing, refactoring, and code review; API contracts and endpoint design; dynamic programming and memoization; HTML semantics and accessibility; and React state and rendering. Questions connect definitions with implementation choices, failure cases, trade-offs, and the concise reasoning expected in technical discussions. Treat incorrect answers as design-review notes: identify the overlooked constraint and practise defending a safer alternative; the answer explanations provide a focused review path.