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InterviewVector React Js Frontend Developer Interview Questions and Answers

Updated 5 Jun 2024

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React Js Frontend Developer Interview Questions

user image Ankit Kumar Yadav

posted on 28 Jul 2023

Interview experience
4
 Good
Difficulty level
 -
Duration
 -
Result
 -

3 Interview Rounds

1

Resume Shortlist Round

Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
2

Assignment Round

React.js based simple web application

3

One-on-one Round (2 Questions)

  • Q1. Typical JS and React interview question
  • Q2. JS related question like hoisting, closure, promises
Interview experience
1
 Bad
Difficulty level
 Moderate
Duration
 -
Result
 No response

I applied via Approached by Company and was interviewed in May 2024.

1 Interview Round

1

Technical Round (1 Question)

  • Q1. How can you achieve Immutability in react js

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview vector taken interview on behalf of another organisation.I had a very bad experience.They are completely fake , for eye washing they will take a interview ...though you done a great job they won't select you for any reason.they will simply reject the candidates and if we ask for feedback they won't reply properly.they don't have dedicated team to address candidate issues.

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
5
 Excellent
Difficulty level
 -
Duration
 -
Result
 Not Selected

1 Interview Round

1

Coding Test Round

It was based on Javascript. Some web basics like CORS , react rendering patterns. Then JS based output questions. Some were based on JS promise. Function currying.

Interview experience
4
 Good
Difficulty level
 -
Duration
 -
Result
 -

1 Interview Round

1

Coding Test Round

Leetcode DSA problems

Interview experience
5
 Excellent
Difficulty level
 -
Duration
 -
Result
 -

1 Interview Round

1

Coding Test Round

Goof amount of core js questions were asked

Interview experience
4
 Good
Difficulty level
 Easy
Duration
 -
Result
 -

I applied via Referral and was interviewed in Feb 2024.

1 Interview Round

1

Technical Round (1 Question)

  • Q1. Polyfill for bind Closures Call apply bind let const var lexical environment scope output questions
Interview experience
4
 Good
Difficulty level
 Moderate
Duration
 Less than 2 weeks
Result
 Not Selected

I applied via Naukri.com and was interviewed in Mar 2023.

2 Interview Rounds

1

Resume Shortlist Round

Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
2

Technical Round (3 Questions)

  • Q1. Started with simple questions like hoisting and virtual DOM, then progressed to event loop microtask queue and other concepts.
  • Q2. Asked about debouncing and throttle (I mentioned them in projects). Then told me to write polyfill for those. What is reconciliation in React and how is it work...read more
  • Q3. Couple of output questions based on closure.

Interview Preparation Tips

Topics to prepare for CARS24 React Js Frontend Developer interview:
  • Closure
  • Reconciliation
  • Virtual DOM
  • Hoisting
  • React Hooks
Interview preparation tips for other job seekers - Don't mention anything that you don't know the depth of. I mentioned reconciliation in my answer while explaining Virtual DOM and he went deep with it and asked about Diffing algorithm and all. Closures are important topics try to solve some output based questions based on them.
Interview experience
5
 Excellent
Difficulty level
 -
Duration
 -
Result
 -

1 Interview Round

1

Technical Round (1 Question)

  • Q1. Coding questions on React + JS

Interview Preparation Tips

Interview preparation tips for other job seekers - Trust the process and work hard on skills
Interview experience
5
 Excellent
Difficulty level
 -
Duration
 -
Result
 -

2 Interview Rounds

1

Technical Round (1 Question)

  • Q1. Create a pagination
2

Technical Round (1 Question)

  • Q1. Write a polyfill of JS promise

Skills evaluated in this interview

Interview experience
4
 Good
Difficulty level
 Moderate
Duration
 Less than 2 weeks
Result
 No response

I applied via Instahyre and was interviewed in Nov 2022.

2 Interview Rounds

1

Resume Shortlist Round

Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
2

Technical Round (2 Questions)

  • Q1. What is Debouncing in JavaScript?
  • Q2. What is an Arrow Function?

Interview Preparation Tips

Topics to prepare for CARS24 React Js Frontend Developer interview:
  • ES6 Features
Interview preparation tips for other job seekers - Have strong basics and be prepared for complex coding challenges.

Skills evaluated in this interview

InterviewVector Interview FAQs

How many rounds are there in InterviewVector React Js Frontend Developer interview?
InterviewVector interview process usually has 2 rounds. The most common rounds in the InterviewVector interview process are One-on-one Round, Technical and Resume Shortlist.
What are the top questions asked in InterviewVector React Js Frontend Developer interview?

Some of the top questions asked at the InterviewVector React Js Frontend Developer interview -

  1. How can you achieve Immutability in react...read more
  2. JS related question like hoisting, closure, promi...read more
  3. typical JS and React interview quest...read more

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