React JS Interview Questions ( useMemo Hook Polyfill )- Frontend Machine Coding Interview Experience

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The useMemo custom hook in React is designed to optimize performance by memoizing the result of a computation. It takes a function and a list of dependencies as arguments, and only re-computes the memoized value when one of the dependencies changes. This helps to avoid expensive calculations on every render, thus enhancing the efficiency of the component.

This video will help you in understanding useMemo react hook. Things which are explained in this video:
1. How to use useMemo react hook
2. When to use useMemo react hook
3. When not to use useMemo react hook
4. Create polyfill for react useMemo hook