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VELOTIO Technologies React Js Frontend Developer Interview Questions, Process, and Tips

Updated 18 Jun 2024

Top VELOTIO Technologies React Js Frontend Developer Interview Questions and Answers

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VELOTIO Technologies React Js Frontend Developer Interview Experiences

2 interviews found

Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - One-on-one 

(7 Questions)

  • Q1. What is hoisting
  • Ans. 

    Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.

    • Variable declarations are hoisted to the top of their scope but not their initializations.

    • Function declarations are fully hoisted, meaning they can be called before they are declared.

    • Hoisting can lead to unexpected behavior if not understood properly.

  • Answered by AI
  • Q2. What is throttling
  • Ans. 

    Throttling is a technique used to control the rate at which a function is executed.

    • Throttling limits the number of times a function can be called over a specified period of time.

    • It helps in optimizing performance by preventing excessive function calls, especially in scenarios like scroll events or API requests.

    • Example: Throttling can be used to limit the rate at which a user can resize a window, ensuring smoother perfo

  • Answered by AI
  • Q3. What is debouncing
  • Ans. 

    Debouncing is a technique used to limit the number of times a function is called in a short period of time.

    • Debouncing is often used in scenarios like search bars where you want to wait for the user to finish typing before making an API call.

    • It involves setting a delay before executing a function after the last time it was called.

    • Debouncing helps in optimizing performance by reducing unnecessary function calls.

    • Example: ...

  • Answered by AI
  • Q4. What is event coupling
  • Ans. 

    Event coupling is the dependency between different parts of a system based on events.

    • Event coupling occurs when one component triggers an event that another component listens for.

    • It can lead to tight coupling between components, making the system harder to maintain.

    • Reducing event coupling can be achieved by using a centralized event bus or implementing a pub/sub pattern.

    • Example: A button click event in a UI component t

  • Answered by AI
  • Q5. Remove duplicates from array
  • Ans. 

    Use Set to remove duplicates from array of strings

    • Create a Set from the array to automatically remove duplicates

    • Convert the Set back to an array to get unique values

    • Example: const arr = ['apple', 'banana', 'apple', 'orange']; const uniqueArr = [...new Set(arr)];

  • Answered by AI
  • Q6. Reverse a Linked List
  • Ans. 

    Reverse a linked list by changing the direction of pointers

    • Create three pointers: prev, current, next

    • Iterate through the linked list, updating pointers to reverse the direction

    • Return the new head of the reversed linked list

  • Answered by AI
  • Q7. Explain closure function with an example
  • Ans. 

    Closure function is a function defined inside another function, with access to the outer function's variables.

    • Closure functions have access to the outer function's variables even after the outer function has finished executing.

    • They can be used to create private variables and functions in JavaScript.

    • Example: function outerFunction() { let outerVar = 'I am outer'; function innerFunction() { console.log(outerVar); } retur

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - I got a call from recruiter and we scheduled one-on-one interview. For the hoisting question, I explained that hoisting is behavior where all declarations are moved on top. But the interviewer was outright rude and told that is an answer given by someone who doesn't know JS and not experienced person. Not accepting an answer and asking to explain in detail is one thing but calling out on candidates and mocking is outright rude. I got similar rude replies for other questions.
In ds round, for removing duplicates from array, I was using standard two pointer solution where complexity was 'N' but I was asked why such complicated solution for simple question. I was advised to use hashmap or two loops. First time in my experience where an interviewer has told me to increase the complexity because the optimized solution looks complex.
For the second question - reverse a linked list, it was not even 10 minutes and I was about to finish my coding with right answer(He did not even bother to ask how I solutionized). He told I'm taking too much time and he asked any other question and abruptly ended the call. My interview was scheduled for one hour in which he asked couple of js concept questions, js coding and two dsa questions and it was over in 35 minutes.

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Sep 2023. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Multiple Questions on basics of JS and react
Round 2 - Technical 

(1 Question)

  • Q1. This was in depth discussion on JS and react

React Js Frontend Developer Interview Questions Asked at Other Companies

asked in Simform
Q1. 1. What is difference between abstract class and interface ?
asked in Simform
Q2. 3. What is Difference between primary key and unique key ?
asked in Simform
Q3. 2. What is Arrow Function in Javascripts?
asked in Simform
Q4. 5. Why we require interface and what is interface in java ?
asked in Simform
Q5. 4. how you join three different tables in SQL ?

Interview questions from similar companies

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

I applied via LinkedIn and was interviewed in Jun 2024. There was 1 interview round.

Round 1 - Technical 

(3 Questions)

  • Q1. Dom manipulation and React hooks
  • Q2. Use call back in depth
  • Ans. 

    Callbacks are functions passed as arguments to another function to be executed later

    • Callbacks are commonly used in event handling, asynchronous programming, and functional programming

    • Callbacks can be synchronous or asynchronous

    • Example: passing a callback function to a setTimeout() function

  • Answered by AI
  • Q3. Promises based coding question

Interview Preparation Tips

Interview preparation tips for other job seekers - They majour focus on technical like coding and promises majourly on Java script
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Coding and basics both asked
Round 2 - Technical 

(1 Question)

  • Q1. Coding and basics both asked
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.

Round 1 - Coding Test 

Easy interview about react js and redux . asked write code to fetch api and do some routing

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
-

I applied via Campus Placement and was interviewed in Sep 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Pretty easy when strong in logical

Round 2 - Coding Test 

General coding questions

Round 3 - HR 

(1 Question)

  • Q1. Communication checking

Interview Preparation Tips

Topics to prepare for Tech Mahindra React Js Frontend Developer interview:
  • HTML
  • CSS
  • React.Js
  • Redux
  • Javascript
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Based on the latest react version.

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
-
Result
-

I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. 1. Javascript data types, 2.Typeof of null and undefined and difference between null and undefined. 3. Class component vs Functional Component. 4. Sum of all array items. 5. Print prime number 1 to 100.

Interview Preparation Tips

Interview preparation tips for other job seekers - Just prepare basic of javascript and react concepts.

I applied via LinkedIn and was interviewed in May 2022. There were 3 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Fundamentals of react js, Advanced Javascript, Html , CSS
Round 2 - Technical 

(1 Question)

  • Q1. Logical questions from Javascript, Focused on problem-solving skills.
Round 3 - Behavioral 

(1 Question)

  • Q1. Past project discussion, skill-set check.

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on fundamentals and problem solving skills.
Interview experience
3
Average
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed before Oct 2022. There were 4 interview rounds.

Round 1 - Resume Shortlist 
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
Round 2 - One-on-one 

(1 Question)

  • Q1. Basic javascript and coding question on react
Round 3 - Technical 

(1 Question)

  • Q1. Technical discussion with senior architect
Round 4 - HR 

(1 Question)

  • Q1. Salary exoectations and other discussions

Interview Preparation Tips

Interview preparation tips for other job seekers - Better avoid this company. The projects here are very bad. With unrealistic timelines

VELOTIO Technologies Interview FAQs

How many rounds are there in VELOTIO Technologies React Js Frontend Developer interview?
VELOTIO Technologies interview process usually has 1-2 rounds. The most common rounds in the VELOTIO Technologies interview process are Technical and One-on-one Round.
What are the top questions asked in VELOTIO Technologies React Js Frontend Developer interview?

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

  1. Explain closure function with an exam...read more
  2. What is event coupl...read more
  3. What is hoist...read more

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VELOTIO Technologies React Js Frontend Developer Interview Process

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