React Interview Questions 2020 (7 More Questions)

In this video I break down 7 react interview questions I would ask candidates now in 2020 to see if they have the react chops! Some of the questions include, useEffect, higher order components, render props and more.

If you would like to schedule a mock interview with me, you can email me at

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00:34 - High Order Components
03:33 - Render Prop
06:28 - What Are Hooks
11:07 - UseEffect
15:11 - memo
17:33 - useCallback
20:36 - useMemo

You are all welcome. 🤘🏼😉

[diddlybop]

I have an interview in 39 mins and after practicing and studying, listening to you explain everything so concisely really solidifies everything in my mind and gives me confidence. Thanks Chaim!

[Yadielx]

That useEffect explanation was the best I've seen so far. +1 Subscriber

[alexyep]

Getting an interview in less than an hour...thanks for these videos

[mccordinator]

These videos have been great for some refreshers for a React interview. Music during the speaking parts got distracting, but I was still able to follow along. Would recommend not having background music during lessons / speaking parts requiring more concentration imo. Thanks again for the great videos!

[albertobarboza]

I took 6 courses.. have been studying react since january... none of the teachers were this clear. THANKS BRO

[sergiuupop]

The music is a little bit too loud . I liked the setup from the last video more. Great content!

[farhanqureshi]

Really informative. The examples are making the whole thing come together so beautifully.

[Iallisios]

I have seen both your 2020 interview questions and they are brilliant !! thank you

[arthusLawitBeta]

Tomorrow I'll have a very important interview, for a life-changing job. This video helps me a LOT! Thank you very much!

[anubhapant]

Your explanations are just wonderful. Pleaseeee create more videos on React interview questions.

[me.shailendra]

Thank You chaim ! This is really an advance level of understanding of React.

[sagoez]

0:30 What is a HOC?
3:30 What is a render prop and why is it good for?
6:30 What are hooks and what’s the problem they solve?
11:05 What is useEffect and how does it work?
15:10 What is React.memo?
17:47 What is React.useCallback?
20:35 What is useMemo ?

[anoopvasudevan]

This was good. Liked they way you showed that hover implementation using 3 different patterns, HOC, render props & custom hooks. Thanks man

[alexskinner]

Chaim, thank you so much for this video series! I am currently interviewing for React developer positions and your definitions and reasons for how and why to these questions are gold! Seriously, I am going to owe you big time when I get hired!

[borislobanov]

I in fact like this video and it pretty much covers all the right questions and I’m grateful for your work! So just in case you welcome some feedback, I’d suggest in the nicest way possible that you maybe decrease the usage of ‘in fact’ and ‘pretty much’ because when I started noticing it, I got distracted from the content for a while. Again, great job overall, please, don’t be offended by my comment, I only wanted your content to be even better.

[steveneng]

Hey Chiam, just gonna let you know your react videos were incredibly insightful and are a gold mine of knowledge. I used your resources while studying for my interviews and landed a new position recently thanks to you. Cheers for the new years !

[gopip]

i watched both react interview questions videos...both are good...subscribed..clicked the bell icon..:as sequence video you can make
1). Redux vs Context
2). useContext With useReducer
3). Error Boundary
4). Which React Form is good ...Normal form with
5). Which UI libraries is good..Semantic UI (its pretty good i have used) or Material UI..Prime ..?
There many i will be adding questions...as i am looking for job in further..But You doing well..;-)
: -)

[danielderese]

I wish I saw this video a year ago. It would have saved me from guessing and headache.

[denzell]

Thank you for these React Interview videos. I feel like im learning a lot. I love using React and I enjoy how powerful it can be.