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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 virtual DOM

DOM stands for Document Object Model and it represents the entire UI of a web page (HTML) in a tree data format. virtual DOM was not invented by React, but it uses it as its core feature. Its main purpose is to minimize the number of DOM operations when re-rendering the UI. React uses this feature to enhance its performance. There’s a high chance you’ll get questions related to this topic in an interview.

What is virtual DOM?

virtual DOM is an in-memory, lightweight virtual representation of Real DOM that’s generated by React components. The virtual representation of a UI is stored in memory and synced with Real DOM to align with the latest state updates. This is possible through a library known as ReactDOM, and this step happens in between the render function being called and elements being displayed on the screen. This entire process is known as reconciliation.

How does virtual DOM work?

React and Vue.js technologies use...

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