HCL Group Reactjs Developer Interview Questions and Answers

Q1. Alternative way for prop drilling
Ans. 
Context API or Redux can be used as alternative ways for prop drilling in React.
• Use Context API to pass data down the component tree without having to manually pass props at every level.

• Implement Redux to manage global state and access data from any component without prop drilling.

• Consider using React's useContext hook with Context API for a simpler way to consume context in functional components.
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Q1. Asked four programs
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Q1. Salary discussion
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Just MCQ questions related to React, Javascript, HTML, CSS

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
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Q1. React basic,event loop, Lazy Loading, Suspense, Javascript basics
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Q2. Create counter application
Ans. 
Counter application using Reactjs
• Create a React component for the counter

• Use state to keep track of the count

• Implement functions to increment and decrement the count

• Display the count on the screen
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Q1. Basic question from React JS, Redux, Javascript, HTML and CSS.
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Q2. Core concept like difference between virtual dom and real dom.
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Q3. What is Redux and flow of Redux. Difference between context api and Redux.
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Q1. Project related questions like what had you done in previous project.
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Q2. Some scenarios based questions.
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Q1. General HR questions.
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