React js - Top 30 Interview Questions and Answers for Beginners

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In Hindi Top 30 React
• Top 30 React Interview...
Timestamps -
00:00:00 - Introduction
00:01:46 - Q1. What is the role of React in software development?
00:04:22 - Q2. What is React?
00:04:50 - Q3. What is SPA(Single Page Application)?
00:06:30 - Q4. What are the advantages of React?
00:08:23 - Q5. What are disadvantages of React?
00:09:55 - Q6. What is the difference between React and Angular?
00:12:47 - Q7. What is DOM?
00:15:03 - Q8. What is the difference between DOM and Virtual DOM?
00:18:54 - Q9. What are React Components?
00:19:44 - Q10. How to setup react project?
00:22:45 - Q11. What is npm? What is the role of node_modules folder?
00:23:59 - Q12. What is the role of public folder in React?
00:24:44 - Q13. What is the role of src folder in React?
00:25:23 - Q14. What is the role of index.html page in React?
00:26:35 - Q15. What is the role of App.js file in React?
00:27:47 - Q16. What is the role of function and return inside App.js?
00:28:20 - Q17. Can we have a function without return inside App.js?
00:29:01 - Q18. What is the role of export default inside App.js?
00:30:25 - Q19. What is the role of index.js file, ReactDOM and render method in React?
00:33:48 - Q20. How React App load and display the components in browser?
00:35:26 - Chapter 3
00:36:08 - Q21. What is JSX?
00:36:59 - Q22. What are the advantages of JSX?
00:39:17- Q.23 Can browser read a JSX File? What is Babel?
00:40:25 - Q24. What is Transpiler?
00:41:03 - Q25. Is it possible to use JSX without React?
00:41:37 - Q26. What is fragment in React?
00:43:21 - Q27. How do you iterate over a list in JSX? What I is the use of map method?
00:45:40 - Q28. What are props n JSX?
00:46:28 - Q29. What are spread operator?
00:47:48 - Q30. What are the types conditional rendering in JSX?

[@roast5077]

Sir I don't know if you'll ever read my comment or not, but if you do, know that, you have successfully helped a student who was not getting a job, land a job at exactly the field he wanted to work in, that is react, and the credit goes to your video. Thank you so much for that.

[@interviewhappy]

It's my pleasure my friend. I am very grateful for your kind words @roast5077

[@shinosukenohara.123]

Bro, can u tell what kind of react project is good for resume? Plzz help me bro, i am in big trouble, wont waste much of your time

[@aviansavians7721]

Hey bro.. is there any chance of texting you in private. I need some inputs.. Please help me out

[@blank.haruka]

Congrats! May I ask which questions were asked to you? Currently preparing for a Technical interview tomorrow :(( Thanks a lot!

[@VKY-XLR8]

​@@blank.harukahey hi, how is your interview went and may I ask for what questions were asked? TIA

[@maxinantony8255]

I have seen couple of other tutorials for React interview prep before coming to this one. But none of them were informative and simple as your lecture. Thank you so much for putting effort for helping people like me. Thank you so much.

[@interviewhappy]

Super thanks.... . I wish you all the best for your career.

[@Vikram_Singh_CS]

Yes, new series required. And thank you so much for this Gem.

[@shivam.v]

Your content's value is appreciated; it's immensely helpful for interview preparation due to its insightful and well-structured coverage. Thank you.

[@interviewhappy]

Glad it was helpful! @shivam

[@marsdwarf]

Amazing video, looking to forward to more!

[@bemeb41yashsakpal90]

I can say only one thing about this playlist, this is just perfect 🙂👍 waiting for more of such videos.

[@interviewhappy]

Thank you so much 😀@bemeb41yashsakpak90

[@Spiritual_Booster_Dose]

sir aap bahut acchha samajte hai ....
mene notes bhi bana liye....
mene javascript ka 3hour bala video dekh ke , me confident feel kr rha hu..
THANKS FOR MAKING VIDEO...
SIR PLEASE MAKE A NODEJS VIDEO , as sooon as

[@skater555556]

I'm at the beginning of learning react def not ready for interviews, but this video was still very informative and I feel like got a pretty good overall summary of everything I'll be needing to learn

[@interviewhappy]

Thanks Hasim and all the best for your career.

[@user-wl9jp6hx4l]

Very short and sweet explanation but there is a great stuff. Really thank you so much for giving such a great content. You have that deserve to get the compliments from viewers . the person who gets scared to attend the interviews this video session makes them get confidence to attend the interviews.❤❤❤❤

[@interviewhappy]

woww.... thanks buddy. You made my day. I also need motivation for keep going and helping others. All the best for your career.

[@pallavichawan6079]

One of the best interview session........... Sir really awesome...... Best of best you are...... I learnt many things from you........ Which I didn't understand by other channels......... Supeb sir please do more and more videos on ReactJS hooks, how in project we use all this hooks....... Axios.........

[@dragonwarrior7246]

Such a high quality content, love it

[@interviewhappy]

Thanks. Glad you liked it. Wish you all the best for your career.

[@PrajwalDhungana-im1in]

Appreciate the video. Well explained. Again, thanks a lot!

[@abdelmonem88]

Thanks alot bro♥
I think this will be a good preparation for any react developer interview

[@dollarpedia]

Really sir ye video hm sabhi k vardaan h sir. Really dil ❤se love you sir 🙏🙏

[@interviewhappy]

Thanks so much for such kind words bhai @dollarpedia

[@johnvalishaik8664]

you have done a great work please continue as like that your explanation way is too smart and attractive Thank you for this 👍

[@jamesgulland]

So helpful, thank you my friend from across the other side of the planet ❤

[@interviewhappy]

Thanks buddy and all the best for your career.

[@Naveen-ci7fw]

Thank you so much ❤ waiting for next video on React

[@interviewhappy]

Thanks Naveen. Glad you liked it. Soon I will create one detail video. All the best for your career.

[@tomasburian6550]

This is a boss video and important not only to get the job but understand React and its structure and workings to use it better. From my experience not that many employers actually test theory during interviews, but you might appear more professional if you demonstrate you know this.

[@interviewhappy]

I agree, things should be know conceptually. But theory is good for remembering the keywords which helps in creating impressions during interviews.

[@abhay626]

I learnt so many things in a hour. Thank you so much!

[@neelsoni13062]

Extremely Helpful ❤

[@leepakshiyadav1643]

Truly amazing video, thank you :)

[@interviewhappy]

wc and and all the best for your career.

[@nanda-tn2po]

Superb video for the beginners and the who is preparing for interview. never seen such a wonderful video

[@VISHNUKUMAR-xe7rd]

It is incredibly helpful sir, I was preparing for interview and searching for important questions on google but was so confused, you really helped a lot by providing all important questions in single video .Thank you sir

[@interviewhappy]

Thanks Vishnu. Glad you liked it. All the best for your career.

[@digambarsuryawanshi563]

Thank you for providing these questions👍👍 and waiting for advanced questions on reactjs video

[@interviewhappy]

Thanks and sure I will soon do it

[@diamondrock4945]

one of the best react video, want 2nd part

[@interviewhappy]

Sure, soon I will try to. All the best for your career.

[@markleyba8331]

this video was amazing. Thank you so much!

[@interviewhappy]

You're so welcome!

[@sharmarahul17]

Excellent explanation! Thanks 🙏, waiting for some advanced videos on React :)

[@interviewhappy]

Soon, I will cover. Best of luck for your career.

[@tienlam327]

Really really thank you for this sharing. It's very beneficial for me in particular and for the rest of FE engineer in general. 😃

[@ramachandra7044]

I am preparing for interviews and this video is of great use. Please make part 2 for react and js as soon as possible. Your happy subscriber after subscribing to interview happy❤

[@interviewhappy]

Good one

[@shortstories2283]

Yes we want next video in this series

[@vijai851]

Very good video for a beginner interview

[@user-or6on7tx5h]

😀Thank you so much sir, please continue the series.

[@interviewhappy]

Sure 👍 @user-or6on7tx5h

[@venkatramnnahreddi4907]

Thanks a lot sir
This video means a lot for me
Your awesome teaching makes simplify the concepts
I knew you did lot of hard work
We can never forget you❤❤❤

[@interviewhappy]

Tears in my eyes. I know the simple ways. But I want the BEST and for that I work really hard.

[@TheVanquisherGaming]

Thank you for providing us valuable interview questions…please also cover advanced react js interview questions such as state managements , important hooks , routing in react, local vs session storage , Usage of Redux with react etc

[@VKY-XLR8]

Hey hi,
Do u know any website or article which covers all possible interview questions for react?

[@insaikishoreseelamsetty3066]

Super Good Illustration sirji

[@abhinan829]

Great video ! Please share a video covering advanced react interview questions such as state managements , hooks , routing, local vs session storage etc

[@interviewhappy]

Thanks. sure I will try to do it soon

[@athulkrishnac.v8563]

Bro you are a saviour, you earned a subscriber

[@interviewhappy]

Thanks for the sub! @athulkrishnac.v8563

[@BalajiM-lj2yq]

I saw your JavaScript and react interview questions, It was very helpful to take me to final rounds and now I got an offer. Thank you so much for making clear videos with examples😊.keep up the good work🎉.

[@user-gv6pf4vy5d]

Sir your questions and explain is superb really heartily thank you so much

[@user-jo8dg2ft7j]

Thank you for your kind efforts!. Good tutorial for preparing interviews. Thanks again...!

[@interviewhappy]

Glad you like them! Keep watching for new Tutorials @user-jo8dg2ft7j

[@maminipradhan5858]

Really refreshing concept you explained!!!

[@interviewhappy]

Thanks Mamini. Wish you all the best for your career.

[@nayanshingne9165]

This video helps me on my presentation. I just prepared this video and done my whole presentation. Happy sir make more tutorials on react. It helps a lot... Thank you this one...

[@interviewhappy]

All the best @nayan

[@ALLFITdudes]

The best video on youtube for React.Js interview. Really Thanks a lot sir ♥

[@interviewhappy]

The best comment award for today goes to Mr Fit. Loved your comment dude.

[@kaunghtetlwin7813]

Thank you sir. You are great.

[@akshaydhongade882]

Hello Sir, Your interview video series is really great it helps me a lot to clear the concepts, please make more videos on Advanced React js, Node js, and AWS services, keep making videos like this Thank you 🙂👍

[@interviewhappy]

Sure Akshay. Slowly slowly I will cover more topics. All the best for your career.

[@PROTECHRAHUL]

@@interviewhappy i have a interview for full stack dev can you please share link of your mern dev interview questions ?

[@TheVanquisherGaming]

Thank you for providing us valuable interview questions…please also cover advanced react js interview questions such as state managements , important hooks , routing in react, local vs session storage , Usage of Redux with react etc

[@THDBookReview369]

Very Appreciated. Thank you. So much

[@interviewhappy]

You are very welcome @THDBookReview

[@prasadpatil2371]

Thanks for providing important interview questions.

[@AmberSparrow876]

It is very helpful... thank you so much sir ❤😊

[@interviewhappy]

Most welcome 😊

[@pengefour1]

thank you for the clear explanations.

[@interviewhappy]

You are welcome@ brother

[@sharanvkt]

thank you so much for this ❤ prepping for tomorrow's interview. I hope I'm gonna crack it

[@interviewhappy]

You will crack it. All the best Sharan.

[@shaharyalbeg9871]

I think anyone who wants to learn React should go through this video first. This video will make a strong base of React in his/her mind.

[@interviewhappy]

Thanks for appreciating my efforts @shaharyalbeg9871

[@sachinkolekar1516]

Excellent explanation! Thanks 🙏, waiting for advanced videos on React

[@interviewhappy]

Glad you liked it . Will upload soon . Thanks @ Sachinkolekar

[@Tarun8336]

Excellent style of teaching. Thank you for making ReactJs so easy to learn.

[@interviewhappy]

Glad you think so! Thanks for appreciating @tarun8336

[@mithunr4740]

Awesome sir. super video. it is help me lot. async await for new React js video. please update. we are waiting. 🤩🤩🤩👍👍👍👍

[@aburaihan019]

Really Awesome.

[@shikhagoyal3532]

Thank you Sir for the amazing content and I am waiting for your next video on React concepts. Please upload soon.

[@interviewhappy]

As soon as possible @shikha

[@mrfriendbd]

Thank you sir to explore details in react js interview question

[@interviewhappy]

wc and all the best for your career.

[@rishigupta3739]

Your question and way to explain for each topics are superb thanks sir

[@interviewhappy]

Thanks and welcome @rishi

[@JeevanWick]

just incredible sir, thank you so much

[@interviewhappy]

Most welcome!

[@averma5401]

great content easy to understand. thanks a lot😊

[@interviewhappy]

Glad it was helpful! Thanks for appreciating @verma5401

[@abdulheartly4384]

This video is very helpful to Reacall The learning Data again.Thank You so Much .🌹

[@interviewhappy]

wc Abdul. All the best for your career.

[@mouni5391]

really very useful and detailed explanation thank you, sir

[@interviewhappy]

Thanks Mouni and all the best for your career.

[@teflonhav]

Thank you so much for this!

[@interviewhappy]

You're so welcome @teflonhav

[@mohammadsaqibtalikoti7734]

very well Explained.

[@interviewhappy]

Thanks. Glad you liked it. All the best for your career.

[@user-gj7gk7hb8d]

Thanks Sir 👍
😊

[@cmp50]

Learning become simple by your video

[@interviewhappy]

Thanks and all the best for your career.

[@i_want_it-i_get_it]

Sir your explanation is simple and easy to understand please do one more video on hoot and some other topics also...i am waiting,i need it sir

[@narendranani7424]

Omg, 😳, what is this bro. Never seen such a video on React as of now. My sincere kudos to you nd your hardwork will get noticed definitely by lot more people. Excellent video, nd crystal clear on each concept. Superb bro, pls do more nd more videos like this.

[@interviewhappy]

Thanks for appreciating my efforts @ narendra

[@ShanakaMadhushan-cw8rh]

Good job sir ...❤

[@sudeshnadas8710]

Very nicely explained by you. Thank you so much.

[@interviewhappy]

You are most welcome

[@rameshnonia243]

Sir enjoyed this playlist. It was short n sweet and knowledgeable too. I request you to please make another playlists for hooks, states etc. interview questions...

[@interviewhappy]

Noted, Will try to do it soon @Ramesh

[@rahimbadsa723]

Thanks sir

[@shivajikakad5098]

Thanks for the informative video :)

[@interviewhappy]

Glad it was helpful! @shivajikakad5098

[@Bharath_TV]

Thanks brother

[@MrCoder-vf6gu]

Awesome Explanation

[@chamu18]

Thank you so much..god bless you😊

[@interviewhappy]

You're welcome 😊

[@Motivational-Speech919]

thank you a lot sir , this really helpful.

[@yashwanth8350]

thank you sir❣

[@interviewhappy]

Welcome 😊@yashwanth8350

[@toshyamg]

great job brooo👏👏👏

[@interviewhappy]

Thank you so much 😀@toshyamg

[@feelalive440]

you did good job'

[@Imaxx-fi2oy]

Nice explanation with PPT and SS

[@interviewhappy]

Thanks and all the best for your career

[@meAnjani]

nice, thank you for you time to make this video and helping developers

[@interviewhappy]

My pleasure@anjani

[@soniambika]

Thanku so much sir in this video plz next video jldi laiyega

[@interviewhappy]

Welcome and yes wo jaldi aega

[@soniambika]

@@interviewhappy ok sir

[@AbhishekSingh-fm6lu]

This vedio was too good. ❤

[@interviewhappy]

Thank you so much 😀

[@GuluGupta-yv5gl]

your explanation ARE awesome sir

[@interviewhappy]

Thanks and welcome @GuluGupta-yv5gl

[@syedzainqalandar778]

You give me good information thanks brother.🤞🤞

[@interviewhappy]

Always welcome @syed

[@mohammedjabir189]

it is really great

[@shesparks64]

best way to prepare:)

[@interviewhappy]

Thanks a lot and all the best

[@AlexNMW1]

perfect content for my next interview . i hope i will pass the interview . thank s for your work it mean a lot to me

[@interviewhappy]

Best of luck!

[@naveenayaan4275]

Thankyou sir

[@atulghisali4177]

Sir, it's superb series ❤ pls make more videos on React interview (Hooks) etc

[@interviewhappy]

Will try to do soon @atulghisali4177

[@arifmohammadsagor3576]

Thank you a lot for your wonderful effort

[@interviewhappy]

It's my pleasure

[@radhashukla9159]

Thank you so much sir😊
Fruit full content😁

[@interviewhappy]

Most welcome 😊 @radha

[@JesusLopez-es4to]

Excellent Vid, Thank you so much for this wonderful content , very nutritive video

[@interviewhappy]

Glad you enjoyed it!

[@sonasreedhar5867]

thank you so much sir.this videos are very helpfull expecting more videos realated to MERN stack web development

[@interviewhappy]

Will upload soon @sonasreedhar5867

[@JatinnSharma]

Thanks sir, really appreciate and waiting for advaced videos on react ....

[@interviewhappy]

Very soon working on it .Thanks for watching @Jatinnsharma

[@Nationsacademy]

Appreciated sir please make a video on "HOW TO SECURE OUR FRONTED CODE & ALSO BACKEND IN WEB DEVELOPMENT".

[@rkp_5099]

Beautifully explained by you really tremendous 👌👌👌

[@interviewhappy]

Thanks and welcome @rosanpatra3703

[@nikhil5304]

Thank you so much sir this is really helpful ❤❤❤❤❤❤❤

[@interviewhappy]

Most welcome @nikhil

[@zia-kayani]

love you sir .. from❣pakistan

[@interviewhappy]

Thanks and all the best for your career.