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React Interview Guide

React Interview Guide

By : Sudheer Jonna, Andrew Baisden
4.3 (6)
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React Interview Guide

React Interview Guide

4.3 (6)
By: Sudheer Jonna, Andrew Baisden

Overview of this book

Are you struggling with React job interviews, feeling hindered by the lack of knowledge or confidence? Look no further than the React Interview Guide. Complete with the latest features of the React library, this comprehensive solution will assist you in taking a definitive step forward in your career as a React developer. This book systematically covers frequently asked questions and common edge cases encountered in React interviews. It goes beyond React to encompass other essential technologies in the React ecosystem, including routing, CSS, testing, and building Next.js apps. You’ll benefit from invaluable expert guidance, enabling you to address a wide range of React ecosystem questions swiftly as this book prioritizes interview readiness, sparing you the need to dwell excessively on individual topics before technical discussions. By the end of this book, you’ll be thoroughly equipped to excel in any React interview, giving you an edge over your peers and significantly increasing your chances of securing your dream job.
Table of Contents (19 chapters)
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1
Part 1: Getting Ready for Interviews
3
Part 2: Mastering the Core React Technical Interview
8
Part 3: Going Beyond React and Advanced Topics
13
Part 4: Hands-On with Programming Tasks

Local state management using Hooks

There are two Hooks to achieve local state management inside React applications. The first Hook, named useState, can be used for simple state transformations, and the other Hook, useReducer, is used for complex state logic. Basically, useState uses useReducer internally. This means that the entire component state can be managed through the useReducer Hook itself. Since the state is a core building block of a React component, every developer should have a clear idea about managing the state using Hooks.

What is the useState Hook?

The useState Hook is used to add the state to a function component. This is one of the most used built-in Hooks from React. This Hook takes the initial state as an argument and the same initial state can be either a value or a function type (i.e., initializer function). If the initial state is derived from an expensive computation, it is suggested to use the initializer function, which will be executed only on the initial...

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