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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

Global state management using Hooks

The useContext Hook is commonly used along with the useState Hook for global state management. The major advantage of the useContext Hook is that it solves the prop drilling issue.

Detailed common use cases of the useContext Hook were already explained in Chapter 2. Hence, this section will mainly focus on specific use case questions related to global state management using the useContext Hook.

How do you override context for a specific part of the component tree?

Sometimes, you may need to override the context with a different value for a certain part of the component tree. It is possible to override the context value by wrapping that part in a provider with a different value.

As an example, the following code applies a blue background to all the pages except for the contact page, where a white background will be applied using a context provider:

<ColorContext.Provider value="blue">
  <About />
 ...

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