Chewy React Js Frontend Developer Interview Questions and Answers

It was based on Javascript. Some web basics like CORS , react rendering patterns. Then JS based output questions. Some were based on JS promise. Function currying.

Q1. Polyfill for bind Closures Call apply bind let const var lexical environment scope output questions
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Not remember now what they had asked.

Q1. Tell me about yourself?
Ans. 
I am a passionate React Js Frontend Developer with experience in building user-friendly and responsive web applications.
• Experienced in developing web applications using React Js

• Proficient in HTML, CSS, and JavaScript

• Familiar with state management tools like Redux

• Strong understanding of responsive design principles

• Ability to work collaboratively in a team environment
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Q2. What is your expectation ctc ?
Ans. 
My expectation for CTC is competitive based on my experience and skills.
• I am looking for a salary that reflects my expertise in React Js development.

• I expect a compensation package that aligns with industry standards.

• I am open to negotiation based on the overall benefits offered by the company.
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Leetcode DSA problems

Q1. Create a pagination
Ans. 
Pagination component to display a list of items with page navigation.
• Create a Pagination component with props for total number of items, items per page, and current page.

• Calculate total number of pages based on total items and items per page.

• Display page numbers with previous and next buttons to navigate through pages.

• Update the list of items displayed based on current page.

• Handle click events on page numbers and previ
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Q1. Write a polyfill of JS promise
Ans. 
A polyfill for JS promise is a piece of code that provides support for promises in older browsers.
• Create a Promise class with resolve, reject, then, and catch methods

• Implement the executor function to handle the asynchronous operation

• Use setTimeout to simulate asynchronous behavior

• Handle chaining of then and catch methods
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Goof amount of core js questions were asked

Q1. Started with simple questions like hoisting and virtual DOM, then progressed to event loop microtask queue and other concepts.
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Q2. Asked about debouncing and throttle (I mentioned them in projects). Then told me to write polyfill for those. What is reconciliation in React and how is it working after React 16 and how was it working ear...read more
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Q3. Couple of output questions based on closure.
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Q1. Coding questions on React + JS
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