Props Interview Questions

Pass callback functions from parent to child as props to enable child-to-parent communication in React.

Set fallback values for optional props using destructuring defaults in functional components and understand when to use defaultProps.

Pass any JavaScript value from parent to child as props, understand how props flow in React, and know what children can and cannot do with them.

Understand the anatomy of a React function component, how JSX compiles, and the rules that make a valid component.

Understand the difference between props and state in React, when to use each, and how they interact to drive rendering.

Understand what triggers React re-renders, how to use state and props correctly, and how to prevent unnecessary re-renders.