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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

Performing side effects in React applications

Effects are an escape hatch in React programming. React provides a few effect Hooks that are used to implement side effects such as data fetching, subscriptions, timers, logging, DOM manipulations, and so on within function components. These Hooks should be used only when you are synchronizing with external systems. There are three types of Hooks available:

  • useEffect: This is a frequently used Hook to connect a component to an external system.
  • useLayoutEffect: This Hook is the same as the useEffect Hook except that it fires before the browser repaints the screen to measure the layout.
  • useInsertionEffect: This Hook fires before React makes changes to the DOM, such as adding dynamic CSS.

Let’s thoroughly discuss the various effect Hooks and their features to answer the questions asked in the interview.

How do reactive dependencies impact the logic inside the useEffect Hook?

The useEffect Hook accepts an...

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