Question Bank
1899 approved questions from the community
What happens when you call setState() multiple times in the same synchronous code block?
What is the primary purpose of React.createElement()?
After calling a `useState` setter, what should you expect?
Render props pattern means a component receives:
Why might SSR improve perceived performance?
For async fetching in React, what helps avoid stale response bugs?
What does one-way data flow in React imply?
What is code splitting mainly intended to improve?
Which testing style is most aligned with modern React guidance?
What do Error Boundaries catch?
What is the main use of `forwardRef`?
Which scenario is best for `useCallback`?
What is a key timing difference between `useEffect` and `useLayoutEffect`?
What does an empty dependency array in `useEffect` mean?
When should you prefer `useReducer` over `useState`?
What is the primary difference between class variables and instance variables?
What is the key characteristic of Python's 'range' type?
How can you define a Python dictionary where multiple keys have the same value efficiently?
What is the recommended approach for loading large data files in Python?
What is the key difference between multithreading and multiprocessing in Python?