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Softseekers Infotech Reactjs Developer Interview Questions and Answers

Updated 12 Dec 2021

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Reactjs Developer Interview Questions

user image Sanskar Raj

posted on 12 Dec 2021

I applied via Hirect and was interviewed in Nov 2021.

1 Interview Round

Interview Questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview was good and easy as they asked only react related questions and the ofcourse this is the field I love . So just need to be calm and this can help in cracking interview.

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Easy
Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Oct 2024.

2 Interview Rounds

1

Technical Round (5 Questions)

  • Q1. Component lifecycle
  • Q2. What is DOM tree?
  • Q3. What is the difference between props and state?
  • Q4. What is redux and when to use it and when not to use it?
  • Q5. Two arrays passed to one function, then remove the elements passed from source array and present in another array
2

Client Interview Round (5 Questions)

  • Q1. What is DOM tree
  • Q2. What are lifecycle methods of react? How we can achieve same in functional components?
  • Q3. What is redux? Explain its architecture.
  • Q4. When do we use any in typescript?
  • Q5. What is the checklist for improving performance of React application?

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Duration
2-4 weeks
Result
No response

I applied via Recruitment Consulltant and was interviewed in Sep 2024.

1 Interview Round

1

Technical Round (16 Questions)

  • Q1. What is hosting and closer
  • Q2. What is difference between var let and const give me an explanation on what block scope
  • Q3. What is asynchronous and how it works
  • Q4. Tell me the output 1)a = 20; console.log(a); var a; 2)b=10; console.log(b); let b; 3)let a =5; if(a<5){ let b = " a lessthen 5"; }else{ let b = "b is grater the...read more
  • Q5. Give a div with text and display center of the page and apply animation using HTML and css
  • Q6. What are semantic tags and explain
  • Q7. How can we write responsive for web page
  • Q8. What is the difference between CSS and SASS? what is the use of Sass
  • Q9. Event propagation
  • Q10. How would you validate the form using HTML? How do you validate the phone number with the country code?
  • Q11. Which test library you use why it usecase
  • Q12. Tell me mounting and shallow concept in testing library
  • Q13. What is redux-toolkit and what difference b/w redux and redux-toolkit
  • Q14. How api call handle in redux and how can you get and display user name from redux
  • Q15. React hooks and how optimization
  • Q16. Why we need thank in redux

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Duration
4-6 weeks
Result
No response

1 Interview Round

1

Technical Round (2 Questions)

  • Q1. React basic,event loop, Lazy Loading, Suspense, Javascript basics
  • Q2. Create counter application

Reactjs Developer Interview Questions

TCS user image Anonymous

posted on 8 Nov 2024

Interview experience
3
Average
Difficulty level
Moderate
Duration
Less than 2 weeks
Result
No response

I applied via LinkedIn and was interviewed in Oct 2024.

1 Interview Round

1

Technical Round (3 Questions)

  • Q1. What are the advantages of React
  • Q2. How the performance optimization can be done in React Js Application
  • Q3. What is the purpose of useMemo and UseCallBack hook

Skills evaluated in this interview

Reactjs Developer Interview Questions

IBM user image Niharika Thakur

posted on 17 Dec 2024

Interview experience
3
Average
Difficulty level
Easy
Duration
2-4 weeks
Result
No response

I applied via Company Website and was interviewed in Jun 2024.

2 Interview Rounds

1

Aptitude Test Round

Got a link on mail to give online clearance test. 25 questions on react, Js and html-css

2

One-on-one Round (1 Question)

  • Q1. Build a login page

Reactjs Developer Interview Questions

Capgemini user image anjali rastogi

posted on 5 Dec 2024

Interview experience
4
Good
Difficulty level
-
Duration
-
Result
-

1 Interview Round

1

Technical Round (1 Question)

  • Q1. What is client side and server side rendering
Interview experience
5
Excellent
Difficulty level
-
Duration
-
Result
-

1 Interview Round

1

Technical Round (2 Questions)

  • Q1. Flat the array without using the inbuilt methods
  • Q2. Sort the given objects based on the ages
Interview experience
4
Good
Difficulty level
-
Duration
-
Result
-

1 Interview Round

1

Technical Round (2 Questions)

  • Q1. What do you mean by redux and how to use redux
  • Q2. What is the use of Context Api in React

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Easy
Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Aug 2023.

1 Interview Round

1

Technical Round (2 Questions)

  • Q1. What is the difference between states and props ?
  • Q2. How are data passed from children to parents in react component?

Interview Preparation Tips

Topics to prepare for Genpact Reactjs Developer interview:
  • React.Js
  • HTML
  • CSS
  • Javascript
Interview preparation tips for other job seekers - Know basic concepts of React.

Skills evaluated in this interview

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