Explain the purpose of useLayoutEffect?
useLayoutEffect is similar to useEffect but fires synchronously after all DOM mutations. It’s useful for reading from the DOM or performing animations before the browser paints. Due to its synchronous nature, excessive usage of useLayoutEffect
may potentially impact performance, especially if the logic within it is computationally intensive or blocking. It’s essential to use useLayoutEffect
judiciously and consider performance implications carefully.
Top React Hooks Interview Questions & Answers
In this article, you will learn React Hooks interview questions and answers that are most frequently asked in interviews. Before proceeding to learn React Hooks interview questions and answers, first learn the complete React Hooks.
React hooks are functions that enable functional components to use state and lifecycle features that were previously only available in class components. Hooks provide functions like useState, useEffect, useContext, etc., that allow you to “hook into” React features from functional components.