React Developer
20+ React Developer Interview Questions and Answers for Freshers
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How can we structure the top level directories in Redux?
What are the differences between a class component and functional component?
What is the difference between slice and splice?
What is a first class function?
What are stateless and stateful components?
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Which libraries you have used with React?
What is status code 404, 200,etc?
What should a web developer know to build a website like html, css, js?
What should be the main focus of website?
How Relay is different from Redux?
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What are the advantages of using Redux?
Highlight the key differences between mapStateToProps() and mapDispatchToProps()?
What are callbacks?
What is reconciliation?
What are props in React?
What is diffing algorithm?
Sort an array of integers in JS.
What are closures?
Explain Hoisting in javascript.
What is Combine Reducer?
Q19. What is react js? What is props? What is useRef hook and use context hook
React JS is a JavaScript library for building user interfaces.
React JS is a declarative, efficient, and flexible JavaScript library.
It allows developers to build reusable UI components.
React uses a virtual DOM to efficiently update and render components.
Props are used to pass data from a parent component to a child component.
Props are read-only and cannot be modified by the child component.
useRef hook is used to create a mutable reference that persists across component render...read more
Q20. Are you available for complete 1 month.
Yes, I am available for complete 1 month.
I am committed to completing any project I start
I have no prior commitments that would interfere with this timeline
I am willing to work extra hours if necessary to meet deadlines
Q21. explain about react guard
React guard is a higher-order component used to restrict access to certain routes in a React application.
React guard is used for implementing authentication and authorization in React applications.
It can be used to prevent unauthorized users from accessing certain routes.
React guard can redirect users to a login page if they are not authenticated.
It can also be used to restrict access based on user roles or permissions.
Q22. use of the axios interceptor
Axios interceptors are used to globally handle HTTP requests and responses in an application.
Interceptors can be used to add headers, handle errors, or modify requests before they are sent.
Example: Adding a token to all outgoing requests for authentication.
Example: Logging all incoming responses for debugging purposes.
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