ReactJS, a widely-used JavaScript library is essential to master to take up advanced web-development roles. Our list of advanced ReactJS interview questions has been strategically curated to help you prepare for those high-level tough interviews.
You’ll find a comprehensive collection of advanced React interview questions, practical ReactJS interview scenarios, and insightful answers that reflect real-world applications. These questions include advanced concepts like hooks, state management, and performance optimization.
Preparing these interview questions will help you demonstrate your expertise and problem-solving skills to the hiring managers in top-tier companies.
If you’re a software engineer, coding engineer, software developer, engineering manager, or tech lead preparing for tech interviews, you can check out the technical interview checklist as well.
Additionally, you can look for our salary negotiation e-book to get interview-ready for FAANG companies. Front-end engineers should prepare for more advanced ReactJS interview questions to test their ability to handle complex aspects of the React library.
Also Read: Top ReactJS Interview Questions and Answers
Let’s dive straight into these advanced React interview questions that cover a variety of key concepts like state management techniques like Context API, Redux, useEffect, useState, and more.
Additionally, these React practical interview questions cover optimization strategies, including lazy loading and memorization.
Other important topics covered in the list of ReactJS interview questions are component lifecycle methods, higher-order components (HOCs), error boundaries, and custom hooks.
These ReactJS interview questions aim to test a candidate’s ability to implement efficient, maintainable, and scalable solutions using advanced ReactJS concepts.
This is one of the most common advanced ReactJS interview questions asked in technical interviews for experienced developers. Some key benefits of using ReactJS include:
Virtual DOM is a feature through which a virtual version of the real DOM is placed in the memory. Using the ReactDOM library, the virtual and real DOMs are synced whenever required.
This is another important advanced ReactJS interview question asked in technical interviews. Components in ReactJS fundamentally go through three Lifecycle Phases.
The various methods in the mounting Lifecycle Phase include:
The lifecycle methods in the Updating Phase include:
Events are actions that are performed by the user or computer. Actions such as clicking and pressing keys are examples of Events in ReactJS. Unlike in HTML, where events are in lowercase, events in React are in CamelCase.
This again is a frequently asked ReactJS interview question asked in technical interviews.
The prime features of the ReactJS framework include:
Redux is a popularly-used library for front-end development. It is loaded with a spate of features that help accomplish advanced front-end tasks using UI components. Applications built using Redux are easy to test and can seamlessly run on multiple framework environments.
Flux offers a bunch of advantages, the most important ones being:
Using HOC, you can –
In this section, we’ll look at some additional React interview questions that you can practice for your upcoming interview.
These above advanced React interview questions will help you understand the type of questions asked in your Java developer interviews, especially if you are a front-end developer.
To excel in your next front-end engineering interview with top-tier companies, you must seek out strategically curated programs that focus on preparing you for the toughest questions.
Our Front-end engineering program has been designed to help you crack those tough questions. Our FAANG+ instructors are active hiring managers at their respective companies and know exactly what it takes to ace tech and managerial interviews.
Interview Kickstart reviews stand as a testament that we have helped thousands of tech professionals land their jobs at their dream companies.
Do you need to be good with ReactJS for backend developer roles?
â€As ReactJs is primarily an open-source front-end framework used for building interface applications, you don’t need to know your way around ReactJS if you’re a backend developer.
When should you expect advanced ReactJS interview questions in Java developer interviews?
You can expect advanced ReactJS interview questions during the coding and systems design rounds if you’re appearing for a software engineering interview.
What main concepts should you prepare to answer advanced ReactJS interview questions?
Advanced ReactJS interview questions are mostly around Redux, Components, Flux, Synthetic Events, Virtual DOMs, and Security.
What is Lazy Loading in ReactJS?
Lazy Loading is a feature where buckets of code are bundled together and deployed simultaneously after each block of code is executed.
What is the use of JSX in React?
JSX in React is a JavaScript XML file that helps write HTML code in the React framework.
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