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Unify Technologies Reactjs Developer Interview Questions and Answers

Updated 8 Jan 2025

Unify Technologies Reactjs Developer Interview Experiences

3 interviews found

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

(2 Questions)

  • Q1. Create a Todo list
  • Ans. 

    A simple Todo list application using Reactjs

    • Create a new React project using create-react-app

    • Implement a component for adding new tasks

    • Implement a component for displaying the list of tasks

    • Add functionality to mark tasks as completed

    • Style the Todo list using CSS or a UI library like Material-UI

  • Answered by AI
  • Q2. Add some buttons for delete
  • Ans. 

    To add buttons for delete, create a button component with a delete function.

    • Create a Button component with a delete function

    • Pass a unique identifier for each item to be deleted

    • Use onClick event to trigger the delete function

  • Answered by AI

I applied via Job Portal and was interviewed in Jul 2022. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Related to react and javascript , one counter app program

Interview Preparation Tips

Interview preparation tips for other job seekers - Javascript and react should be prepared thou roughly

Reactjs Developer Interview Questions Asked at Other Companies

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Q5. Write code for functional component to call an API and show a lis ... read more

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

Interview Questionnaire 

1 Question

  • Q1. Wht is is higher order component and can you write one ?
  • Ans. 

    Higher order component is a function that takes a component and returns a new component with additional functionality.

    • HOC is a design pattern in React

    • It allows code reuse, logic abstraction and composition

    • It can be used for cross-cutting concerns like authentication, logging, etc.

    • Example: WithAuth HOC that adds authentication logic to a component

    • Example: withRouter HOC that adds routing props to a component

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - They thoroughly assess your technical skills

Skills evaluated in this interview

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Interview Questionnaire 

3 Questions

  • Q1. Basic JavaScript
  • Q2. Agail methology and scrum
  • Q3. Practical test. JavaScript, react
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 Dec 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 

(4 Questions)

  • Q1. Some of important javascript questions
  • Q2. On react js like hooks, virtual dom,html5 and html,state, useMemo, useCallback,useEffect
  • Q3. Box model, css selector
  • Q4. What are fragments in react js
  • Ans. 

    Fragments in React.js are used to group multiple elements without adding an extra node to the DOM.

    • Fragments are a way to group multiple elements without using a wrapper element.

    • They help in avoiding unnecessary divs in the DOM.

    • Fragments can improve performance by reducing the number of DOM nodes.

    • They are useful when returning multiple elements from a component's render method.

    • Fragments can be written using the

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - just prepare basic of front end technology like html,css,javascript,es6

Skills evaluated in this interview

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

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

Round 1 - Technical 

(3 Questions)

  • Q1. What are the advantages of React
  • Ans. 

    React offers advantages such as virtual DOM for improved performance, reusable components, and easy integration with other libraries.

    • Virtual DOM for efficient updates and improved performance

    • Reusable components for easier development and maintenance

    • Easy integration with other libraries like Redux for state management

    • Support for server-side rendering for better SEO performance

  • Answered by AI
  • Q2. How the performance optimization can be done in React Js Application
  • Ans. 

    Performance optimization in React Js can be achieved through code splitting, memoization, virtualization, and minimizing re-renders.

    • Implement code splitting to load only necessary components when needed

    • Use memoization techniques like useMemo and useCallback to prevent unnecessary re-renders

    • Implement virtualization for long lists or tables to render only visible items

    • Minimize re-renders by using shouldComponentUpdate or

  • Answered by AI
  • Q3. What is the purpose of useMemo and UseCallBack hook
  • Ans. 

    useMemo and useCallback are hooks in React used for optimizing performance by memoizing values and functions respectively.

    • useMemo is used to memoize the result of a function so that it is only recomputed when its dependencies change.

    • useCallback is used to memoize a function instance so that it is not recreated on every render unless its dependencies change.

    • Both hooks help in optimizing performance by preventing unneces...

  • Answered by AI

Skills evaluated in this interview

Reactjs Developer Interview Questions & Answers

TCS user image Samiksha Sajane

posted on 31 Jul 2024

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

(5 Questions)

  • Q1. Explain useSelector
  • Ans. 

    useSelector is a hook provided by React-Redux for accessing the Redux store state in functional components.

    • Allows functional components to access the Redux store state without connecting to the store

    • Accepts a selector function as an argument to specify which part of the state to extract

    • Automatically subscribes to the Redux store updates and re-renders the component when the selected state changes

  • Answered by AI
  • Q2. Optimization in react
  • Ans. 

    Optimization in React involves improving performance and efficiency of the application.

    • Use shouldComponentUpdate or PureComponent to prevent unnecessary re-renders

    • Avoid using inline functions in render method to prevent re-renders

    • Use keys in lists to help React identify which items have changed

    • Splitting components into smaller ones can improve performance

    • Use React.memo for functional components to memoize the result

  • Answered by AI
  • Q3. What is JSX in react
  • Ans. 

    JSX is a syntax extension for JavaScript used in React to write HTML-like code within JavaScript.

    • JSX allows developers to write HTML-like code directly in their JavaScript files

    • It makes the code more readable and easier to understand

    • JSX gets transpiled into regular JavaScript by tools like Babel before being rendered by the browser

  • Answered by AI
  • Q4. Explain redux flow in react
  • Ans. 

    Redux flow in React involves actions, reducers, store, and components to manage state in a centralized manner.

    • Actions are dispatched to describe what happened in the application.

    • Reducers specify how the state changes in response to actions.

    • Store holds the state of the application.

    • Components can connect to the store to access and update the state.

  • Answered by AI
  • Q5. Stateful and stateless components

Skills evaluated in this interview

Reactjs Developer Interview Questions & Answers

TCS user image Snehasis Chakraborty

posted on 7 Aug 2024

Interview experience
4
Good
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Not Selected

I applied via Approached by Company and was interviewed in Jul 2024. There was 1 interview round.

Round 1 - One-on-one 

(3 Questions)

  • Q1. Brief about project
  • Ans. 

    Developed a web application for managing inventory and sales

    • Used Reactjs for front-end development

    • Implemented Redux for state management

    • Integrated with backend APIs using Axios

    • Designed responsive UI for better user experience

  • Answered by AI
  • Q2. Asked me about graph ql
  • Q3. Asked topic on routing .

Interview Preparation Tips

Interview preparation tips for other job seekers - please discuss the salary prior to giving interview .
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Difference between if else and ternary
  • Ans. 

    Ternary operator is a shorthand for if else statement in JavaScript.

    • Ternary operator is written as condition ? expression1 : expression2

    • If the condition is true, expression1 is executed, else expression2 is executed

    • Ternary operator is more concise and can be used inline in JSX

  • Answered by AI
  • Q2. Class and functional components
Round 2 - Behavioral 

(2 Questions)

  • Q1. About my projects
  • Q2. About strenghts and weeknesses
Round 3 - HR 

(2 Questions)

  • Q1. About my experience
  • Q2. Salary discussions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - HR 

(1 Question)

  • Q1. Questions related to Current Job Profile and previous experience

Unify Technologies Interview FAQs

How many rounds are there in Unify Technologies Reactjs Developer interview?
Unify Technologies interview process usually has 1 rounds. The most common rounds in the Unify Technologies interview process are Technical.
How to prepare for Unify Technologies 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 Unify Technologies. The most common topics and skills that interviewers at Unify Technologies expect are Javascript, Redux, Typescript, CSS and CSS3.
What are the top questions asked in Unify Technologies Reactjs Developer interview?

Some of the top questions asked at the Unify Technologies Reactjs Developer interview -

  1. Wht is is higher order component and can you write on...read more
  2. add some buttons for del...read more
  3. create a Todo l...read more

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Unify Technologies Reactjs Developer Interview Process

based on 1 interview

1 Interview rounds

  • Technical Round
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