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ValueLabs React Developer Interview Questions, Process, and Tips

Updated 19 Apr 2021

ValueLabs React Developer Interview Experiences

1 interview found

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

Interview Questionnaire 

7 Questions

  • Q1. How do you connect a component to Redux store? Which function in Redux is used to connect to store? What are the parameters in connect?
  • Ans. 

    To connect a component to Redux store, we use the connect function from the react-redux library.

    • Import the connect function from react-redux.

    • Use the connect function to wrap the component and connect it to the Redux store.

    • The connect function takes two parameters: mapStateToProps and mapDispatchToProps.

    • mapStateToProps is a function that maps the state from the Redux store to the component's props.

    • mapDispatchToProps is ...

  • Answered by AI
  • Q2. What is Context API in React? Is there a need to have an initial state in Context API?
  • Ans. 

    Context API is a way to share data between components without passing props down manually.

    • Context API provides a way to pass data through the component tree without having to pass props down manually at every level.

    • It is useful for sharing data that needs to be accessed by many components at different levels of the tree.

    • Initial state can be set in Context API using the createContext() function.

    • There is no need to have ...

  • Answered by AI
  • Q3. Do Reducer need to have an initial state compulsorily?
  • Ans. 

    Yes, it is mandatory for Reducer to have an initial state.

    • Initial state defines the starting point of the state tree.

    • It helps in defining the shape of the state tree.

    • It is used to set default values for the state properties.

    • It is also used to reset the state to its initial values.

    • Example: const initialState = { count: 0 };

    • Example: const initialState = { name: '', age: 0 };

  • Answered by AI
  • Q4. What is the minimum coverage for an app? How much code do you push to production/master branch while deployment?
  • Ans. 

    Minimum coverage for an app and code pushed to production/master branch while deployment.

    • Minimum coverage for an app depends on the project requirements and complexity.

    • Generally, a coverage of 80% or higher is considered good.

    • Code pushed to production/master branch should be thoroughly tested and reviewed.

    • Continuous integration and deployment can help automate this process.

    • Examples of tools for code coverage include Je

  • Answered by AI
  • Q5. Will React re-render whole page or just a part of it?
  • Ans. 

    React re-renders just the part of the page that has changed, thanks to its virtual DOM.

    • React uses a virtual DOM to track changes in the UI.

    • When a component's state or props change, React compares the virtual DOM with the real DOM and updates only the necessary parts.

    • This approach improves performance by minimizing the number of DOM manipulations.

    • React's diffing algorithm efficiently determines the minimal set of change

  • Answered by AI
  • Q6. What are the use cases of Service Workers?
  • Ans. 

    Service Workers are scripts that run in the background and can intercept network requests, cache or modify responses.

    • Offline support for web applications

    • Push notifications

    • Background synchronization

    • Reduced network usage and faster page loads

    • Progressive Web Apps (PWA)

  • Answered by AI
  • Q7. Explain Redux-Saga middleware. How do you Dispatch actions from components in Redux?
  • Ans. 

    Redux-Saga is a middleware for Redux that handles side effects. Actions can be dispatched from components using mapDispatchToProps.

    • Redux-Saga is used to handle side effects like API calls and asynchronous actions.

    • It uses generator functions to make asynchronous code look synchronous.

    • Sagas listen for specific actions and perform tasks based on those actions.

    • To dispatch actions from components, use mapDispatchToProps to ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Appeared for the First Round Technical Interview. Video call. Interviewer was a nice person. You can clear this round if your concepts are clear about react, Redux, Middleware or other keywords mentioned in your resume.

Skills evaluated in this interview

Interview questions from similar companies

I applied via Recruitment Consultant and was interviewed in Aug 2020. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Tell about yourself
  • Q2. What are microservices and why it is used for .
  • Ans. 

    Microservices are a software architecture pattern where applications are built as a collection of small, loosely coupled services.

    • Microservices allow for modular development and deployment of applications.

    • Each microservice can be developed, deployed, and scaled independently.

    • Microservices communicate with each other through APIs.

    • They promote flexibility, scalability, and fault tolerance.

    • Examples of microservices includ

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be Confident , truthful , loyal with your Interviewer and especially with your Manager and HR and before interview go through once on your resume like your technical skills , projects roles and responsibilities and the achievements that you have done in career .

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Feb 2021. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Collections, solid principles, oops concepts, garbage

Interview Preparation Tips

Interview preparation tips for other job seekers - It was good and easy

I applied via Naukri.com and was interviewed in Oct 2020. There were 3 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Selenium framework level questions
  • Q2. Questions on programing
  • Q3. Questions on locators
  • Q4. Questions on ci and cd pipelines
  • Q5. Question on repo

Interview Preparation Tips

Interview preparation tips for other job seekers - Thorough with basic concepts and be prepared strongly to land a job at Birlasoft

I applied via LinkedIn and was interviewed before Jun 2021. 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 

(1 Question)

  • Q1. About experience & working techs

Interview Preparation Tips

Interview preparation tips for other job seekers - Do well & Attend positive attitudes. Explain the area's your strong enough

I applied via Naukri.com and was interviewed before Mar 2021. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Ionic, Angular, Cordova
Round 2 - HR 

(1 Question)

  • Q1. Normal HR questions like goal, attitude etc and salary negotiations.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be technically prepared. Basic concepts are checked.

I applied via Naukri.com and was interviewed before Oct 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Starting with basic technical questions and moving ahead with scenarios based on my 10 years of work experience.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident with your ans and try to reveal you have actually worked on that technology

I applied via Job Portal and was interviewed in Apr 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Explain data warehouse conceprs and used in your current project?
  • Ans. 

    Data warehouse is a central repository of data used for reporting and analysis.

    • Data is extracted from various sources and transformed to fit into the warehouse schema.

    • Data is organized into dimensions and facts for efficient querying.

    • Used for business intelligence and decision-making.

    • In my current project, we use a data warehouse to store and analyze customer behavior data.

    • We extract data from our website, mobile app, ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Core concept should be good.

I applied via Naukri.com and was interviewed before Feb 2021. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Oops concept ,collection concept,multithreading questions,framework,java 8 concepts
  • Q2. Spring boot , sql queries

Interview Preparation Tips

Interview preparation tips for other job seekers - Study core java ,sql,spring boot properly
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
-

I applied via Approached by Company and was interviewed in Aug 2024. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Design an weather app using android architecture components?
  • Ans. 

    Design a weather app using Android architecture components.

    • Use MVVM architecture pattern for separation of concerns

    • Implement LiveData for real-time data updates

    • Utilize Room database for offline data storage

    • Integrate Retrofit for network calls to fetch weather data

    • Use ViewModel to manage UI-related data in a lifecycle-conscious way

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. Discussion on projects done

Skills evaluated in this interview

ValueLabs Interview FAQs

How to prepare for ValueLabs React 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 ValueLabs. The most common topics and skills that interviewers at ValueLabs expect are Javascript, React.Js, HTML, Redux and CSS.
What are the top questions asked in ValueLabs React Developer interview?

Some of the top questions asked at the ValueLabs React Developer interview -

  1. How do you connect a component to Redux store? Which function in Redux is used ...read more
  2. What is Context API in React? Is there a need to have an initial state in Conte...read more
  3. What is the minimum coverage for an app? How much code do you push to productio...read more

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