Rippling Senior Frontend Software Engineer Interview Questions and Answers

Q1. Polyfill for bind Closures Call apply bind let const var lexical environment scope output questions
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Q1. Event loop based questions
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Q2. Input output question
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Q1. React hooks , callback hook
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Q2. Create a component for counter
Ans. 
Create a reusable component for a counter in web design and frontend development.
• Use HTML for structure

• Use CSS for styling

• Use JavaScript for functionality

• Implement increment and decrement buttons

• Display the current count
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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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