Question Bank

Which company developed and maintains TypeScript?

Render props pattern means a component receives:

For async fetching in React, what helps avoid stale response bugs?

What does one-way data flow in React imply?

A scalable way to reduce context-triggered rerenders is to:

What is code splitting mainly intended to improve?

React Portals are most useful when you need to:

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`?

Which statement is correct about `props` vs `state`?

In a list render, what is the primary purpose of `key`?

Which description best matches React's role in frontend development?

What is `useMemo` mainly for?

React Fragments let you return multiple children without adding extra DOM wrappers.

Defining nested function components inside parent components is a recommended pattern.