Deloitte Front Office Executive Interview Questions and Answers

What is React? What is React architecture ? What is dynamic imports? What is interceptor?

React JS Basic and JS Deep Dive

Q1. React JS and JS Questions
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Q1. Fir arrow function This keyword Promises Promise chain Generator function Rest operator Spread operator React hooks Higher order component Redux life cycle Palindrome string code Fibonacci code
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Q1. Array linked list queue
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Q1. Why you want to change?
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Q2. What is your expected salary
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Q1. How to pass data? Redux Basic javascript question
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Q1. Redux Functionality
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Q2. How payment gateway works.
Ans. 
Payment gateway facilitates online transactions by securely transferring payment information between a website and a bank.
• Payment gateway encrypts payment information to ensure security

• It authorizes the payment by verifying the details with the bank

• It processes the payment and transfers funds to the merchant's account

• Popular payment gateways include PayPal, Stripe, and Square
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Q1. 1) what is ReactJs?
Ans. 
ReactJS is a JavaScript library for building user interfaces.
• Developed by Facebook

• Uses a virtual DOM for efficient updates

• Supports server-side rendering

• Can be used with other libraries and frameworks

• Uses JSX syntax to write HTML-like code in JavaScript

• Example: Facebook, Instagram, Airbnb, Netflix use ReactJS
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Q2. 2) What us UseState() In React
Ans. 
UseState() is a hook in React that allows functional components to have state variables.
• useState() is used to declare state variables in functional components.

• It returns an array with two elements: the current state value and a function to update it.

• The function to update the state can be called with a new value or a function that takes the previous value as an argument.

• Example: const [count, setCount] = useState(0);

• Ex
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