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ITC Infotech Reactjs Developer Interview Questions and Answers

Updated 24 Sep 2024

ITC Infotech Reactjs Developer Interview Experiences

2 interviews found

Reactjs Developer Interview Questions & Answers

user image Harsh Khandelwal

posted on 24 Sep 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Dsa question were asked

Round 2 - Aptitude Test 

Question related to profit loss

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

(2 Questions)

  • Q1. What is Event loop
  • Ans. 

    Event loop is a mechanism in JavaScript that allows for asynchronous operations to be executed in a non-blocking way.

    • Event loop is responsible for handling asynchronous operations in JavaScript.

    • It allows for non-blocking execution of code by moving asynchronous tasks to the event queue.

    • Event loop continuously checks the call stack and the event queue, moving tasks from the queue to the stack when the stack is empty.

    • Exa...

  • Answered by AI
  • Q2. What are closures
  • Ans. 

    Closures are functions that have access to their own scope, as well as the scope in which they were defined.

    • Closures allow functions to access variables from their outer scope even after the outer function has finished executing.

    • They are commonly used to create private variables in JavaScript.

    • Closures are created whenever a function is defined within another function.

  • Answered by AI

Reactjs Developer Interview Questions Asked at Other Companies

Q1. Implement counter such that it has 2 buttons to increment and dec ... read more
asked in Accenture
Q2. How do you make a page responsive. Bootstrap layouts and alerts
asked in Java R & D
Q3. What are Call, apply and bind methods, what is currying in JavaSc ... read more
Q4. what is ES6 feature small coding on how let,var,const works javas ... read more
asked in Metafic
Q5. Write code for functional component to call an API and show a lis ... read more

Interview questions from similar companies

I applied via Company Website and was interviewed in May 2021. There were 3 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. All basic js concepts
  • Q2. Reactjs 16+ questions
  • Q3. Nodejs
  • Q4. Unit test

Interview Preparation Tips

Interview preparation tips for other job seekers - All about basic js concepts
Reactjs 16+ questions
Nodejs
Jest, enzyme

Interview Questionnaire 

1 Question

  • Q1. Asked to write a general reusable form component in Reactjs, fields should be dynamic and inputs to the form should get displayed as table format.

Interview Questionnaire 

3 Questions

  • Q1. What are the new features in react 16?
  • Ans. 

    React 16 introduced new features like React Fiber, Error Boundaries, Portals, and improved server-side rendering.

    • React Fiber is a new reconciliation engine that improves performance and enables incremental rendering.

    • Error Boundaries allow developers to catch and handle errors in components.

    • Portals provide a way to render children into a different DOM subtree.

    • Improved server-side rendering with support for streaming and...

  • Answered by AI
  • Q2. Why react hooks are use full?
  • Ans. 

    React hooks simplify state management and lifecycle methods in functional components.

    • Hooks allow functional components to have state and lifecycle methods

    • They reduce the need for class components and HOCs

    • Hooks make code more readable and easier to test

    • Examples of hooks include useState, useEffect, and useContext

  • Answered by AI
  • Q3. What is HOC components?
  • Ans. 

    HOC components are higher-order components in React that allow code reuse and logic sharing.

    • HOC components are functions that take a component and return a new component with additional functionality.

    • They are used to abstract common logic and behaviors into reusable components.

    • HOC components can be used for tasks like authentication, logging, and code reuse.

    • Example: a withAuth HOC component that adds authentication log

  • Answered by AI

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Aug 2021. There were 4 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Html - Form, meta tags
  • Q2. Css - Grid box.
  • Q3. How do you make a page responsive. Bootstrap layouts and alerts
  • Ans. 

    To make a page responsive, use Bootstrap layouts and alerts.

    • Use Bootstrap's grid system to create responsive layouts

    • Use media queries to adjust the layout based on screen size

    • Use Bootstrap's responsive utility classes to hide/show elements on different devices

    • Use Bootstrap's responsive navigation components for mobile-friendly menus

    • Use Bootstrap's responsive images to ensure they scale properly

    • Use Bootstrap's responsiv...

  • Answered by AI
  • Q4. Javascript array based questions
  • Q5. Questions from redux, hook, use state, UseEffect

Interview Preparation Tips

Interview preparation tips for other job seekers - I had a call from Accenture HR asking my interest for the role. Three rounds - 1st is mcq which had 30 questions for 35min. Moderate to tough.
Second round is technical interview, took around 2 hours. Totally exhausted after 1st hour. Interviewer asked to write few codes in the live code share screen. The process is completed in a week

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Apr 2022. There was 1 interview round.

Round 1 - Technical 

(3 Questions)

  • Q1. What is closures, Hoisting with example Semantic elements
  • Ans. 

    Closures and hoisting are important concepts in JavaScript.

    • Closures refer to the ability of a function to access variables in its outer scope even after the function has returned.

    • Hoisting is the behavior of moving variable and function declarations to the top of their respective scopes.

    • Example of closures: function outer() { let x = 10; function inner() { console.log(x); } return inner; } const innerFunc = outer(); inn...

  • Answered by AI
  • Q2. Chaining Methods Currying Call bind and apply Optimization of application Server side rendering
  • Q3. Selectors HTML 5 features

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview questions were basic javascript only. He didn't ask anything related to reactjs.
Practice for scope of variables inside and outside of functions

I applied via Recruitment Consulltant and was interviewed in Mar 2022. There was 1 interview round.

Round 1 - Technical 

(6 Questions)

  • Q1. What is hoisting in JS
  • Ans. 

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

    • Hoisting applies to both variable and function declarations.

    • Variable declarations are hoisted but not their initializations.

    • Function declarations are fully hoisted, allowing them to be called before they are declared.

    • Hoisting does not apply to variables declared with let or const.

    • Hoisting can lead t...

  • Answered by AI
  • Q2. What are higher-order functions in JS
  • Ans. 

    Higher-order functions are functions that take one or more functions as arguments or return a function as their result.

    • Higher-order functions can be used to create reusable code by abstracting common patterns.

    • They enable functional programming paradigms like currying and composition.

    • Examples of higher-order functions in JavaScript include map, filter, and reduce.

  • Answered by AI
  • Q3. Difference between var, let, and const in JS
  • Ans. 

    var is function scoped, let and const are block scoped.

    • var can be redeclared and updated within its scope

    • let can be updated but not redeclared within its scope

    • const cannot be updated or redeclared once declared

    • let and const are not hoisted like var

    • const must be initialized during declaration

  • Answered by AI
  • Q4. What are Hooks in React.js
  • Ans. 

    Hooks are a feature in React.js that allow developers to use state and other React features in functional components.

    • Hooks are functions that let you use React features in functional components

    • They allow you to use state and other React features without writing a class

    • Hooks provide a way to reuse stateful logic between components

    • Some commonly used hooks are useState, useEffect, and useContext

  • Answered by AI
  • Q5. Presentation component vs functional component in React.js
  • Q6. Bind(), call(), apply() in JS

Interview Preparation Tips

Topics to prepare for Infosys Reactjs Developer interview:
  • JavaSctipt
  • React.Js
Interview preparation tips for other job seekers - the interview was based on basic concepts of JS.

Skills evaluated in this interview

I applied via Company Website and was interviewed in Nov 2022. There were 2 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 - Technical 

(2 Questions)

  • Q1. Difference between var and let, difference between redux and flux
  • Ans. 

    Var is function scoped, let is block scoped. Redux is a predictable state container, Flux is an architecture pattern.

    • Var can be redeclared and updated within its scope, let cannot be redeclared but can be updated within its scope

    • Redux has a single store for the entire application, while Flux has multiple stores

    • Redux uses a unidirectional data flow, while Flux uses a bidirectional data flow

    • Redux has middleware for handl...

  • Answered by AI
  • Q2. Output based questions on var and let.

Interview Preparation Tips

Interview preparation tips for other job seekers - Go through the fundamentals of javaScript , var and let , promises, map,filter,reduce

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Basics of react, javascript, hooks

ITC Infotech Interview FAQs

How many rounds are there in ITC Infotech Reactjs Developer interview?
ITC Infotech interview process usually has 1-2 rounds. The most common rounds in the ITC Infotech interview process are Technical, Coding Test and Aptitude Test.
How to prepare for ITC Infotech Reactjs Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at ITC Infotech . The most common topics and skills that interviewers at ITC Infotech expect are Backend, Front End, Debugging, HTML and Javascript.
What are the top questions asked in ITC Infotech Reactjs Developer interview?

Some of the top questions asked at the ITC Infotech Reactjs Developer interview -

  1. What is Event l...read more
  2. What are closu...read more

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ITC Infotech Reactjs Developer Interview Process

based on 2 interviews

Interview experience

4.5
  
Good
View more
ITC Infotech Reactjs Developer Salary
based on 5 salaries
₹6 L/yr - ₹7.2 L/yr
25% more than the average Reactjs Developer Salary in India
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