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U.S. Bank Reactjs Developer Interview Questions, Process, and Tips
U.S. Bank Reactjs Developer Interview Experiences
1 interview found
Sudhir kumar
I applied via Approached by Company and was interviewed in Dec 2023. There was 1 interview round.
(4 Questions)
- Q1. How to manage state between sibling component with using redux and local storage?
- Ans.
State can be managed between sibling components using Redux and local storage.
Create a Redux store to manage the state
Define actions and reducers to update the state
Connect the sibling components to the Redux store
Use local storage to persist the state between page reloads
- Q2. How to deploy react app on s3?
- Ans.
To deploy a React app on S3, you need to build the app, create an S3 bucket, configure bucket permissions, and upload the build files.
Build the React app using 'npm run build' command
Create an S3 bucket on AWS console
Configure bucket permissions to allow public access
Upload the build files to the S3 bucket
Enable static website hosting on the S3 bucket
Access the deployed React app using the S3 bucket URL
- Q3. Explain microfrontend approach in react?
- Ans.
Microfrontend approach in React is a technique of breaking down a large frontend application into smaller, independent and reusable parts.
Microfrontend approach helps in modularizing the frontend codebase.
Each microfrontend can be developed, deployed, and maintained independently.
Microfrontends can communicate with each other through APIs or events.
This approach allows different teams to work on different parts of the ...
- Q4. Coding test: create new array from two different array by adding array elements on same indexes.
- Ans.
Create a new array by adding elements from two different arrays at the same indexes.
Use the map() method to iterate over one of the arrays.
Access the elements at the same index from both arrays and concatenate them.
Return the new array of concatenated strings.
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Samiksha Sajane
(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
- 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
- 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
- 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.
- Q5. Stateful and stateless components
Skills evaluated in this interview
Niharika Thakur
I applied via Company Website and was interviewed in Jun 2024. There were 2 interview rounds.
Got a link on mail to give online clearance test. 25 questions on react, Js and html-css
(1 Question)
- Q1. Build a login page
Selected
I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.
(2 Questions)
- Q1. What is the difference between states and props ?
- Ans.
States are mutable data managed within a component, while props are immutable data passed from parent to child components.
States are managed within a component and can be changed using setState method
Props are passed from parent to child components and are immutable
States are used for internal component data management, while props are used for passing data between components
Example: A counter component may have a stat...
- Q2. How are data passed from children to parents in react component?
- Ans.
Data can be passed from children to parents in React components by using callback functions.
Use callback functions to pass data from child components to parent components
Parent component passes a function as a prop to child component
Child component calls the function with the data as an argument to pass data to parent component
Interview Preparation Tips
- React.Js
- HTML
- CSS
- Javascript
Skills evaluated in this interview
I applied via Walk-in and was interviewed in Jan 2024. There was 1 interview round.
(1 Question)
- Q1. Basic Javascript, React Js question
divya reddy
(2 Questions)
- Q1. Realted to React js
- Q2. Javascript basics
(1 Question)
- Q1. About salary discussion
I applied via Job Portal and was interviewed in Jan 2024. There was 1 interview round.
(1 Question)
- Q1. Difference between let,var and const
- Ans.
let, var, and const are all used for variable declaration in JavaScript, but they have different scopes and behaviors.
let has block scope, var has function scope, and const is a constant that cannot be reassigned.
Using let allows you to declare variables that are limited to the scope of a block statement.
var variables are hoisted to the top of their function scope.
const variables must be initialized with a value and ca
Skills evaluated in this interview
I applied via Recruitment Consulltant and was interviewed in May 2024. There were 2 interview rounds.
MCQ based Questions were asked
(2 Questions)
- Q1. Do you follow CI/CD process?
- Ans.
Yes, I follow CI/CD process to automate testing and deployment.
I use tools like Jenkins, GitLab CI, or CircleCI to automate the build, test, and deployment process.
I write unit tests and integration tests to ensure code quality before deployment.
I regularly push code changes to version control and trigger automated builds and tests.
I use continuous integration to merge code changes frequently and detect issues early in
- Q2. What is CI/CD Process
- Ans.
CI/CD process is a software development practice that involves continuous integration, continuous delivery, and continuous deployment.
Continuous Integration (CI) involves automatically building and testing code changes frequently.
Continuous Delivery (CD) ensures that code changes are always in a deployable state.
Continuous Deployment (CD) automatically deploys code changes to production environments.
CI/CD helps in redu...
Skills evaluated in this interview
(1 Question)
- Q1. Basic Question JS , React JS , Redux
Interview Preparation Tips
Just MCQ questions related to React, Javascript, HTML, CSS
(1 Question)
- Q1. 1. Coding question in JS: Capitalize last letter of each word in a string. 2. React JS: Fetch data from some given API and store data in tabular form
- Ans.
Capitalize last letter of each word in a string and fetch data from API to display in tabular form using React JS.
Split the string into an array of words
Iterate through each word and capitalize the last letter
Join the words back together to form the modified string
Use React JS to fetch data from API and display in a tabular form
Skills evaluated in this interview
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