Tech Mahindra React Js Frontend Developer Interview Questions and Answers

Q1. Explain Virtual DOM, Key Features of React, Hooks in React, create a todo app in react
Ans. 
Virtual DOM is a lightweight copy of the actual DOM, React key features include component-based architecture, declarative syntax, and virtual DOM, React Hooks are functions that let you use state and other React features without writing a class.
• Virtual DOM is a lightweight copy of the actual DOM that React uses to improve performance by updating only the necessary parts of the DOM.

• Key features of React include componen...read more
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Q2. Javascript Questions- Closures,promises,Async/await,setTimeOut, write acode to reverse a string
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Q1. Self Introduction, some situation based questions
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Q2. Basic HR regular questions
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Q1. What is the maximum number of stores that can be created in Redux?
Ans. 
There is no hard limit on the number of stores that can be created in Redux.
• Redux does not have a built-in limit on the number of stores that can be created.

• Each store in Redux is independent and can manage its own state.

• It is recommended to use a single store for most applications, but multiple stores can be used for complex scenarios.

• Creating multiple stores can lead to increased complexity and potential performance
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Q2. Is it possible to create an object of an abstract class?
Ans. 
No, it is not possible to create an object of an abstract class.
• Abstract classes cannot be instantiated directly.

• You can only create objects of concrete classes that inherit from the abstract class.

• Abstract classes can have abstract methods that must be implemented by concrete subclasses.
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Easy interview about react js and redux . asked write code to fetch api and do some routing

Pretty easy when strong in logical

General coding questions

Q1. Communication checking
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