WSP Web Developer Interview Questions and Answers

Web developer and on 20 oct Hackerank.

26 Oct 2023 All topics

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. 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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Aptitude and coding round

Q1. 1 hr interview on JS, react, redux and html/css
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Q1. Discussion with a director on the kinds of projects to expect
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Q1. Array linked list queue
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Web developer and on 20 oct Hackerank.

26 Oct 2023 All topics

Q1. Hoisting concept with examples and guess the output
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Q2. Map functionality with a call back function
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Q3. Copy object, spread operator usage . Deep copy, sallow copy
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Q4. Flexbox vs grid, dom, box model,
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Q5. React optimization, why React,
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