To understand your experience with various Java tools and frameworks, FAANG+ companies typically test your knowledge of Java application tools and Microservices, including ReactJS. To ace your technical interview, it is critical to know the answers to frequently asked advanced ReactJS interview questions.
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This piece will look at some popular advanced ReactJS interview questions asked in technical interviews at FAANG+ companies.
Here’s what we’ll cover in this article:
This is a common advanced ReactJS interview question asked in technical interviews. 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 -
Take a look at some ReactJS Interview Questions and Answers here.
In this section, we’ll look at some additional ReactJS interview questions that you can practice for your upcoming interview.
These above advanced ReactJS interview questions will help you understand the type of questions asked in your Java developer interview, especially if you are a front-end developer.
Q1. Do you need to be good with ReactJS for backend developer roles?
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.
Q2. 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.
Q3. 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.
Q4. 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.
Q5. What is the use of JSX in React?
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