6 React Interview Questions You Have to Know

[@PedroTechnologies]

The first 1,000 people to use this link will get a 1 month free trial of Skillshare: skl.sh/pedrotech02221

[@MrNikola14]

I've been asked these interview questions (which I remembered and wrote down) so it might help someone: 1. What is state hoisting 2. What are falsy values in js 3. Synchronous vs Asynchronous code 4. What is a purpose of a Function as a child 5. Presentational component vs container component 6. Why do we need keys for React lists 7. How to recognize closures in js 8. Difference between using fetch() and axios 9. Purpose of fragments 10. How to create a custom hook

[@Dt-8398]

Just curious what level positions were these questions asked? Is this entry level, intermediate or senior level? Thanks.

[@MrNikola14]

​@@Dt-8398 these were for entry level, as a junior react dev

[@sogggy]

Thanks. Did you get the job?

[@mofe620]

😂 I can provide answers to only 3 of these questions.

[@一脸滑稽-k5v]

@@MrNikola14 I'm a junior developer looking for entry level job.... And .... damn I can't answer these !

[@chandrashekar-us6ef]

Few more common question: What is the exact difference between class component and functional component?(they’re are not expecting syntactic differences as answer) How do you choose functional over class component ? What exactly happens with Lazy loading and how code splitting works? How is closures implemented in React. unfortunately I failed the interview and I had no answers for these.

[@XlON___]

Thank you my man, I landed in Canada from Chile 4 months ago and have my first interview tomorrow. This video was indeed helpful, cheers!!!!

[@PedroTechnologies]

Best of luck!

[@zakhariihusar6975]

How did it go?

[@XlON___]

@@zakhariihusar6975 super bad, they didn't ask me any of these lmao

[@zakhariihusar6975]

@@XlON___ better luck next time!

[@Sergio-ef5pz]

Que te preguntaron? Conseguiste algún trabajo en Canadá?

[@shinigami675]

I was asked 1. Virtual Dom 2. React Security 3. OOP Principles and Design Patterns 4. Idempotency 5. High Level Components and Functions.

[@MarushDenchev]

Idempotency? Isn’t that too personal to ask?

[@shinigami675]

@@MarushDenchev lmao

[@sam_temp]

Virtual dom, state, explain all hooks, hook rules (should be at top level, should be in functiona lcomponens as they were meant to be), mvc architecture, state management (context api, redux, zutsland)

[@stilltrippin4687]

Well, mastering design patterns is my next goal to achive, thanks man. Wish you good luck in the youtube journey

[@PedroTechnologies]

Best of luck!

[@johnadepelumi93]

this will really be helpful to a lot of react devs hoping to land their first full time job.

[@calebcadainoo]

Very comprehensive 🙌

[@PedroTechnologies]

Glad it was helpful!

[@arhabersham]

I would rename this channel Pedro"LifeSaver"Tech !

[@ArpithaIndira]

Very useful information..definitely recommend to watch for those who are looking for questions for react ❤

[@cryptodoomer2855]

jeez, seeing this reminds me of my time as a junior dev. I wish i had chatgpt in that days

[@berrieberrie1555]

thank you so much ^^ a hidden gem video that mostly coach/youtubers/tutorials dont take notes

[@rumpleshtiltkinzzz]

When you are explaining state and how it differs in React compared to the example of using a plain object, what you're referring to is a declarative programming style as opposed to imperative(writing all the implementation logic yourself).

[@randerins]

I'm actually so glad that my coding bootcamp taught me deeply about the MVC pattern, on this case using Rails. It's easier than it seems.

[@Eric-lw5yq]

You're growing up right before our eyes!

[@jameshalstead6742]

The DOM question got me a month ago. I still don't feel like I can explain it, thanks for covering this.

[@Aliena92]

Thank you so much! Every topic is a breeze with you.

[@brandoni9599]

Your videos have really helped me. Thank you!

[@fcq731]

Just a small suggestion, there is too much unnecessary information instead of direct question and answer. Would be great to cut to the chest.

[@salmansaysit]

MVC is more of an Architecture where Design Patterns deals with structure of Classes in OOP. Like singleton, factory, façade and strategy etc ,

[@ravikanhreddymanik7767]

Thank you Man! Really appreciate your effort to help people like me.

[@newyorkheart]

Pretty good explanation for beginners to understand the concepts

[@adamtak3128]

Hey Pedro. How is your learning of GoLang going? WIll you be making videos/tutorials based projects aroung GoLang in the future?

[@PedroTechnologies]

I spent my whole summer last year using golang for backend. I got pretty good with it, I can start making videos but I feel like there is a lack of demand for it.

[@Uchutanjyo]

Underrated video, this should have more views! Thx Pedro!

[@vadikot]

thank you so much for this video it helped me understand some topics better and will definitely help me in my interview

[@luketembanimunyandu3326]

Awesome insights, thanks bud

[@LuisReyes-zs4uk]

Really good video, thanks dude!

[@Icedanon]

In the context of a react app, for mvc, wouldn't the model be the backend, the controller be your javascript, and the front end be the view? And since react components encapsulate jacascript along with jsx, can you really separate them into a view and controller?

[@dougui.p]

bro, since the first time a watch one your video i thought, wow this guy looks like a brazilian, so i followed you in instagram and i got it, you're a truly fucking brazilian, hahaha. Deixando o inglês das ruas de lado, parabéns pelo conteúdo, Pedrão, tô assistindo vários vídeos do seu canal e, além de aprofundar nas tecnologias, tô treinando o inglês também. Forte abraço, irmão!

[@PedroTechnologies]

Kkkkkkkk td mundo toma um susto qnd ver q sou br. Pra ser honesto se do nada eu visse um tutorial em ingles de um br eu ia achar top kkkkkkk Valeu mano!

[@tomasburian6550]

I've done dozens of interviews recently that these questions were in nearly all of them.

[@adeleke5140]

thank you for this video, Pedro. would review the concepts you've mentioned.

[@cholo2605]

Thanks Pedro!!

[@jsvrs]

why u blurred there? u have a gun?

[@ThColinPereira]

Super helpful as always, Pedro!

[@Onserio.]

Nice one, thanks.

[@iuliiasiriakivska2209]

Thanks, great one

[@pjnyc8276]

Thank you for this video. I am in the process of interviewing React/React Native devs. Do you do consulting work?

[@rakhisingh9797]

Pls make more videos like this 😃

[@PedroTechnologies]

More coming!

[@jorgevillafraz2656]

Thanks for the video

[@World_information5568]

Very informative video Dear Sir 😇

[@abhaytiwari6411]

thanks pedro

[@adewumijohnadedoyin4061]

It's really helpful!

[@arturmavlidov247]

That's good, thanks!

[@jatilyadav4000]

Amazing Video bro

[@horu8027]

Gracias Pedro👍

[@abhishekmagar9843]

Thank you brother for kind information

[@Regalman]

video starts at @2:58

[@ytubs]

god bless pedro tech

[@asagiai4965]

Is #4 Like how to pass data on components?

[@jatilyadav4000]

Really helpful Bro.

[@catalinrusu8098]

Nice video and good information! Thanks! Have you tried Jotai instead of Redux?

[@meraatmostafavi7758]

thanks for the vid that was helpful

[@PrasathGururmoorthy]

Thanks, really it will usefull for me.

[@ty-cf6zi]

That's really helpful😃

[@rachidslearnings3933]

Thank you the the good tipps

[@aakankshabaijal]

Loved the video! Crisp, to the point and super helpful. Great work!

[@victorkhachi8222]

Thank you

[@shadykhatri1620]

Clear and simple

[@youngwolf1009]

Pedro ur an angel

[@natnael-oqp5082]

bro How long I take to become back-end developer (learn nodejs mongodb(mysql) graphql ) I am reactjs/nextjs developer

[@PedroTechnologies]

Nodejs + a DB like mysql or mongo shouldn't take long. To be able to code with it I would say a month is enough, but to be really good it takes time. GraphQL is way more advanced, would not recommend starting with it.

[@natnael-oqp5082]

@@PedroTechnologies ooooo bro 10Q respect and love from Ethiopia

[@arbros9093]

Need more videos on this topic

[@nikkisaha8830]

Thank you so much cutie ❤️ please make more such videos and crash course videos on firebase

[@glareminds4286]

Nice tutorial

[@yashodipdeshmukh6897]

One more rule for hooks - no hook inside another hook.

[@27sosite73]

super!

[@amauribechtoldjunior9588]

Hi Pedro, good content, thanks for this video! I would just suggest on the Hooks rules question, another plus It's always a good practice start then with "use" on the name.

[@unjinjang2234]

Hey pedro! Excellent content 😌 Would love a video from you going over and explaining about common react design patterns! Looking forward to it 👏

[@gauravgaurav6055]

I can answer almost all answers but still no job :(

[@rebeccaignacio7497]

Boa Pedrinho

[@ifeanyiilonze5485]

Thanks nwanne

[@novaa977]

great vid, move that pen tho XD

[@PedroTechnologies]

Lmaoo how did you even see that

[@anakoridze]

there is a lot of blabla in this video and few explanations

[@jupiterliketheplanet]

Yea, felt the same way

[@Diogocb]

Why u put this blur thing in your face?

[@PedroTechnologies]

It was a mistake with youtube editor, I unfortunately am unable to fix it :/

[@Randomguy48279xyz]

👍

[@jayypluss]

hu3

[@thomasmajq2525]

tidy ur clothes ?

[@melodichype4749]

Bs! Waste!!

[@Pareshbpatel]

Very informative video. Thanks, Pedro. {2022-02-15}, {2022-11-22}

[@PedroTechnologies]

Glad you enjoyed it!

[@KAZVorpal]

Blah blah blah intro blah blah ad-forced-on-us-despite-paying-for-premium...then he takes OVER A MINUTE to prattle on before asking the first question... Actual start of video: 2:53 Getting close to a quarter of the way through the video. And then his answer is actually pretty weak.

[@MenAgainstEmotionalAbuse]

Please make some videos on redux if not already started