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Classplus React Js Frontend Developer Interview Questions and Answers

Updated 21 May 2024

Classplus React Js Frontend Developer Interview Experiences

1 interview found

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed in Apr 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Props in reactjs
  • Ans. 

    Props in ReactJS are used to pass data from parent to child components.

    • Props are read-only and cannot be modified by the child component.

    • Props can be any type of data, including strings, numbers, arrays, objects, functions, etc.

    • Props are passed down the component tree from parent to child using the syntax .

  • Answered by AI
  • Q2. How would u make webapp efficient
  • Ans. 

    Optimize code, minimize network requests, use lazy loading, implement caching

    • Optimize code by removing unnecessary code, using efficient algorithms, and reducing render times

    • Minimize network requests by combining multiple requests, using server-side rendering, and implementing data caching

    • Use lazy loading to only load resources when needed, improving initial load times

    • Implement caching for frequently accessed data to r

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be positive

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

2 DSA questions Both are from DP

Round 2 - Technical 

(2 Questions)

  • Q1. 2 Questions , 1 is DSA
  • Q2. Second question is Puzzle

Interview Preparation Tips

Interview preparation tips for other job seekers - Practise DSA more and give more and more interviews.
Interview experience
3
Average
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Sep 2023. There were 4 interview rounds.

Round 1 - Aptitude Test 

Aptitude test was of 1 hr

Round 2 - Coding Test 

It was about 1 hr duration

Round 3 - Technical 

(2 Questions)

  • Q1. What do you know about oops
  • Ans. 

    Object-oriented programming paradigm focusing on objects and classes

    • Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

    • Inheritance: Ability of a class to inherit properties and behavior from another class

    • Polymorphism: Ability to present the same interface for different data types

    • Abstraction: Hiding the complex implementation details and showing only the necessary features

  • Answered by AI
  • Q2. Tell me about encapsulation
  • Ans. 

    Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

    • Encapsulation helps in hiding the internal state of an object and restricting access to it.

    • It allows for better control over the data by preventing outside interference.

    • Encapsulation also promotes code reusability and modularity.

    • Example: In object-oriented programming, classes encapsulate data fields and methods to ope

  • Answered by AI
Round 4 - HR 

(2 Questions)

  • Q1. How do you manage your team
  • Q2. Why should I hire you

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

2 Query question and 3 coding questions

Round 2 - Technical 

(4 Questions)

  • Q1. Basic oops , Java script and Networking questions.
  • Q2. What is object orienteered programming.
  • Ans. 

    Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.

    • Objects are instances of classes, which define the structure and behavior of the objects.

    • Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

    • Example: Java, C++, Python are popular languages that support object oriented programming.

  • Answered by AI
  • Q3. Different Events in java script
  • Ans. 

    Events in JavaScript are actions or occurrences that happen in the browser that the code can respond to.

    • Events can be triggered by user actions (like clicking a button), browser actions (like page load), or system events (like a timer expiring)

    • Event listeners are used to listen for and respond to events

    • Common events include click, mouseover, keydown, submit, etc.

  • Answered by AI
  • Q4. Event listeners
Round 3 - Coding Test 

Project , coding question, DBMS

Round 4 - HR 

(1 Question)

  • Q1. Basic personal details

Skills evaluated in this interview

I appeared for an interview in Jun 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 180 minutes
Round difficulty - Hard

The test link had 3 days expiry so I could attempt test anytime. It was conducted on doselect.com

  • Q1. 

    Equilibrium Indices in a Sequence

    You are given an array/list named 'SEQUENCE', which consists of 'N' integers. The task is to identify all equilibrium indices in this sequence.

    Explanation:

    An equilibr...

  • Ans. 

    The task is to find the equilibrium indices of a given sequence, where the sum of elements at lower indices is equal to the sum of elements at higher indices.

    • Iterate through the sequence and calculate the total sum of all elements

    • Initialize a left sum and right sum as 0

    • For each index, update the left sum and right sum and check if they are equal

    • If they are equal, add the index to the equilibrium indices

    • Return the equil

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

Video interview round wherein I was asked to wrote code for the problem statements given by the interviewer. The problems were mainly focused on advanced JS concepts like asynchonous progamming, timers, closures, and data structure problems around arrays, sets, linked list etc.

  • Q1. 

    Rearrange Linked List Problem Statement

    Given a singly linked list in the form 'L1' -> 'L2' -> 'L3' -> ... 'Ln', your task is to rearrange the nodes to the form 'L1' -> 'Ln' -> 'L2' -> '...

  • Ans. 

    The task is to rearrange the nodes of a singly linked list in a specific order without altering the data of the nodes.

    • Iterate through the linked list to find the middle node using the slow and fast pointer technique.

    • Reverse the second half of the linked list.

    • Merge the first and reversed second half of the linked list alternatively to get the desired order.

  • Answered by AI
Round 3 - HR 

Round duration - 30 minutes
Round difficulty - Easy

This was the last round with HR wherein they judged cultural fit and there was discussion on things like my expectations v/s their expectations etc.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaNoSpringworks interview preparation:Topics to prepare for the interview - Javascript/Typescript, NodeJS, MongoDB, SQL, Angular, Data Structures and Algorithms, Object Oriented Programming ConceptsTime required to prepare for the interview - 3 MonthsInterview preparation tips for other job seekers

Tip 1 : Get well versed with the fundamentals of Javascript including advanced concepts like promises, async/await, generators, higher order functions, closures, currying etc.
Tip 2 : Do some projects on MERN Stack because a lot of projects here use some or all of those technologies
Tip 3 : Do prepare for behavioral/cultural-fit questions especially around how you'll handle various stituations during work or how will you manage productivity while working remotely.

Application resume tips for other job seekers

Tip 1 : Having projects on MERN stack will give you advantage
Tip 2 : Do mention if you have any AWS experience.
Tip 3 : Mention all your internships/past experiences. Keep them crisp and talk about what you did and it's impact/outcome.
Tip 4 : Any experience/exposure to blockchain will definitely give brownie points.

Final outcome of the interviewSelected

Skills evaluated in this interview

I appeared for an interview in Nov 2021.

Round 1 - Coding Test 

Round duration - 30 minutes
Round difficulty - Easy

This round mainly consisted of some questions on advanced JS topics like Execution Context, Callback queue, Micro task queue, Promises, etc.

Round 2 - Telephonic Call 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

This round was more technical compared to the previous one. The interviewer was a senior developer. If questions were not answered, answers would be given/explained.

  • Q1. What are some aggregate operators in MongoDB?
  • Ans. 

    Aggregate operators in MongoDB are used for data aggregation and manipulation.

    • Some aggregate operators in MongoDB include $sum, $avg, $min, $max, $push, $addToSet, $first, $last, $project, $match, $group, $sort, $limit, $skip.

    • Example: db.collection.aggregate([{$group: {_id: '$field', total: {$sum: '$value'}}}])

  • Answered by AI
Round 3 - HR 

Round duration - 30 minutes
Round difficulty - Easy

This round was mainly to assess my experience level, roles, and responsibilities from my previous company. Salary negotiations also happened here.

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaNo criteriaSpringworks interview preparation:Topics to prepare for the interview - Databases, Asynchronous programming, Promises, JavaScript, DS.Time required to prepare for the interview - 1 monthInterview preparation tips for other job seekers

Tip 1 : Learn about Execution Context, Promises in JS
Tip 2 : Learn about indices, Difference between different databases
Tip 3 : Error handling and Exceptions

Application resume tips for other job seekers

Tip 1 : Put in what you’ve done and not what you could have done.
Tip 2 : Keep it short and simple

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Apr 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Basics from the technologies mentioned in my resume

Interview Preparation Tips

Interview preparation tips for other job seekers - The interviewer was very cool and strong in basics and it was a very good experience for me.
Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Walk-in and was interviewed in May 2024. There were 3 interview rounds.

Round 1 - Aptitude Test 

Basics of aptitude questions like relation,train,boat, probability,number series , and so on...

Round 2 - Coding Test 

String occurrence, array list

Round 3 - Puzzles Interview 

(2 Questions)

  • Q1. Man crossing a bridge
  • Q2. Wrong label on the boxes
  • Ans. 

    The wrong label on the boxes can cause confusion and errors in the software development process.

    • Ensure proper labeling of boxes to avoid confusion

    • Double check labels before using them in the development process

    • Communicate with team members to clarify any discrepancies in labeling

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep practice on coding
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Walk-in and was interviewed in Jul 2024. There were 4 interview rounds.

Round 1 - Aptitude Test 

There was an basic question in Aptitude

Round 2 - Group Discussion 

They told me to tell about social media goods and Bad in Future

Round 3 - Coding Test 

Array Questions,Number Coadings,Basics of OOPS

Round 4 - HR 

(2 Questions)

  • Q1. Tell about yourself
  • Ans. 

    I am a passionate software developer with experience in building web applications using various technologies.

    • Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

    • Proficient in backend development with Node.js and databases like MongoDB and MySQL

    • Familiar with version control systems like Git and deployment tools like Heroku

    • Strong problem-solving skills and ability

  • Answered by AI
  • Q2. They are logical question, Cake Question

Interview Preparation Tips

Interview preparation tips for other job seekers - Be rdy to Answer for all Question.....don't scare
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 - Aptitude Test 

Normal concepts of apps only please be prepare on math,time,distance and other topics as well

Round 3 - Coding Test 

They will check your problem solving ability in coding

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare all topics on java language it will help you to clear the problem solving rounds and be prepared for tough programs

Classplus Interview FAQs

How many rounds are there in Classplus React Js Frontend Developer interview?
Classplus interview process usually has 1 rounds. The most common rounds in the Classplus interview process are Technical.
What are the top questions asked in Classplus React Js Frontend Developer interview?

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

  1. How would u make webapp effici...read more
  2. Props in reac...read more

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Classplus React Js Frontend Developer Interview Process

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Interview experience

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Average
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