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17 React Interview Questions You Must Know as a Developer in 2025

Tapajyoti Bose on March 30, 2025

Originally published on Medium React is one of the most in-demand skills for Frontend Developers in 2025. If you're preparing for a React develope...
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Rasheed Bustamam

Good info! Curious about the clickbait header image though. What's she got to do with react?

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Tapajyoti Bose

It's just like you mentioned: clickbait 😅

The job of the title & image is to get the readers to open the article, the job of the content is to deliver quality information

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Rense Bakker

Class components are deprecated, so you should not write any new class components. Same goes for lifecycle methods. It's best to forget about lifecycle methods completely, because abusing useEffect to replace your old lifecycles code will cause weird behavior, bugs and performance issues.

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Rasheed Bustamam

This article only used class components in error boundaries, which are the official way to create error boundaries.

react.dev/reference/react/Componen...

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Reckelton

This is a great collection of React interview questions, covering everything from Virtual DOM to React Fiber! The detailed explanations and code snippets make it easy to grasp key concepts. Definitely a must-read for any developer preparing for interviews in 2025. Also, if anyone needs a quick break, check out the Starbucks menu for a caffeine boost before diving back into coding! 🚀

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Reckelton

This is an excellent collection of React interview questions, covering topics from the Virtual DOM to React Fiber. The clear explanations and code examples help in understanding important concepts, making it a valuable resource for anyone preparing for interviews in 2025. Also, if you're looking for a quick break, exploring the Wheelock Place Mall Directory might offer some good spots to relax before getting back to coding.

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Frédéric VENOT

12 is missing: why React sucks.

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Ravindra Kumar

Good

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Dmitrii Kartashev

2025? Dude, these questions are from 2020 :)

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Rasheed Bustamam

React hasn't really changed since then, and I think react 19 is too bleeding edge to have any reasonable guide on interview questions (interview discussions maybe, but not quiz like questions)

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Predictable Profits

Fantastic App

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Predictable Profits

Highly recommend