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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

Understanding error boundaries

In React applications, you can handle errors in two possible ways. The first approach is using a try..catch block to handle the errors in an imperative code block, similar to regular event handlers. The second approach is to use error boundaries. These are used to deal with declarative component code that will render on the screen.

The React team introduced error boundaries as part of React version 16. No official component has been created for error boundaries in the React library, so you need to create the error boundary component on your own.

What are error boundaries?

Error boundaries are just React components with a certain list of tasks. They are used to catch JavaScript errors that can occur in their child component tree, log those specific errors, and redirect the screen to the fallback UI to recover from the error state. This component helps prevent the entire component tree from crashing just because of an error that happened somewhere...

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