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Frequently Asked ReactJS Interview Questions

With Tips on What to Expect and Prepare For — 2020 Version

Ran (Reine)
7 min readDec 26, 2020
Photo by Gabrielle Henderson on Unsplash

I was preparing for a front-end ReactJS interview a few days ago and realized that many guides seem to be rather outdated (class based components, relatively few discussed about hooks, etc).

In this article, I’ll try to collate and present a list of interview questions that I think has a higher chance of being asked and hopefully it’ll be useful to you!

The first part would be presenting some tips to better help you prepare for your interviews and the second one would be QnAs of the technical questions.

Part 1

Interviewers realize that even if you memorize all the ReactJS theories perfectly well, it doesn’t mean that you can actually code. That’s why other than asking you technical questions do see if you understand the theories, it is likely that they may ask you to code on the spot.

In my case, my interviewer sent me a codesandbox link and told me we’re going to be using that link for the interview. Here’s an example of what they can use — link.

Other than codesandbox, there are many other dedicated sites like Coderbyte or HackerRank. Check out this link if you’d like to find out more about it.

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Ran (Reine)
Ran (Reine)

Written by Ran (Reine)

I live for days when I can watch skies of blue, while enjoying the view. Most other days I’m a city rat who scuttles between Art and Coding. SG NTU CS Grad.

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