Top 100 React JS Interview Questions and Answers
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- Опубликовано: 31 дек 2023
- 1. FULL REACT INTERVIEW COURSE(with PDF Book + Excel)
React Interview Masterclass: Top 200 Questions & Answer
Coupon code REACTOFFERMAY2024 applied in below URL- 80% Off - Limited Time Offer
www.udemy.com/course/react-in...
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imojo.in/interviewhappyreact
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Just mail me at anuragrawat123@gmail.com.
All the best for your interviews.
TIMESTAMPS
2:42 react basics 1
26:45 react basics 2
48:24 react file and folders.
1:02:42 JSX
1:20:01 components- Functional/Class
1:34:11 Routing .
1:42:33 Hooks 1 .
1:59:28 Hooks 2.
2:05:49 life cycle methods-1
2:20:32 controlled & Uncontrolled Components .
2:30:15 code splitting
2:43:18 react -others
thnx bro
Thanks bro
thank u so much sir :) Please bring the same for Node.js
@@interviewhappy
Thanku bro
thanks a lot
I am a older mom with 2 kids, changing my career to a full stack developer. It is really hard for me to squeeze time learning all the technologies and compete with those young talents, but I am trying. Thank you so much for your videos, very self-explanatory! I just purchased your Udemy class for support! I will definitely let you know if I finally land a job~
All the best 👍
Great React interview questions! 👍 Hoping for a follow-up with 100 Node.js questions. Your content is invaluable for developers! 🚀
this is the best react revision video. Thank you.
Great content and great delivery, i.e., voice and speed. Thank you so much. Subscribed!
Thank you so much for creating such amazing videos. Your videos helped me in landing my job. Love your work it's very helpful
In last 6 month I have given 8 interviews in MNC and PBC all failed still not loosing hopes. Thanks for this video I appreciate your hard work!
Thank you very much Happy to make me Happy, This is what I am looking for.
Now i am preparing for my interview for tech lead. For .net and react js and nextjs Senior fullstack developer.
Thankyou Happy, I crack the interview in my first try & waiting for the offer letter. This video is very useful for revision. Thankyou so much..
bro are you a fresher? where did you applied for job? I am applying but not getting single call
Thank you for this valuable course! The questions are very practical-I encountered several in my first round of phone interviews. I believe every front-end developer should master these Q&A for good luck to favor them.
I'm a full stack dotnet developer. The way you explained all the concepts answered more than just the questions i had in my mind initially. Great work 😄👍
thank you bro for this guide, your efforts in making this video are very much appreciated
This is the best crash course for a react developer interview. I would recommend your course to all there.
I have selected as a software engineer by preparing with you videos 1.5 years ago.
Thanks.
which company
Hi sir from watching your videos and following your advice today I got my new job thank you very much sir In the interview almost all questions are asked that you taught only
can u share some questions
thank you for this great video ,we do really appreciate it
Easy to understand, its for quick learners
Great Effort Happy you are really making others Happy by these videos
WOW THANK YOU , your javascript udemy course is amazing !!!, im definately going to get the REACT COURSE NOW!! i dont need to watch this video i already know it will be great
Thanks and You’re welcome 😊
Thank you, It's perfect
Sir.....first Of All Thank You SoMuch for this video......and i would request you to create one more video
on React Including Redux Questions.
so much work done by you, thank you so much
You are welcome!
Thank you amazing tutorial for React Q&A. I learnt a lot in this tutorial.
Glad it was helpful!
Thank you so much sir. This type of videos are really the big help to whom, who wants to crack the interview and want to get the job.
Your welcome
Thanku sir a lot for such a awesome interview series I was able to crack my interview for the full stack role and your videos helped me a lot .......❤
Excellent work Happy Sir,THANK UOU
Many many thanks
Thanks for this video, you have really covered all the common questions that every interviewer can ask for React and you are explainations are easy to understand.can you cover questions like
1.Diff in useMemo and useCallback
2.Does useCallback is needed in Ract 18
3.What are the new features are available in recent React version.
4.How to validate props in React.
Great content thanks brother
Thank you for this! Very well done!
Glad you enjoyed it!
Thank you very much sir this video helped me also and I recommend this video for most of my friends please keep going and create the content like this 😊
Hi sir...I did buy your pdf bcz I liked the content....I cleared the first round ..will be back once I clear the technical round ..
Attempted 12 interviews in 2 months, for Senior frontend dev , now I am here lets see how my other interviews go
That's the spirit...
You remind me of myself. I was never a good interview person, but giving up was never an option.
Also, you remind me of the "Unbroken" movie plank scene.
Hats off, and all the best for your interviews...
Nice spirit! Wish u share ur interview experiences. We are not even getting calls. Thanks for info. Please do analyze if possible, any issue once.
@@interviewhappy
Please upload Python interview questions Sir 🙏🤝
Where are you from
And how r u approaching companies
@@vamshikrishna6001 keep notice as 30-60 days, in HR round you can request for increase in notice period or decrease in notice period from current company. try updating ur profile and resume just make small changes so that your profile gets on top and in actively searching for jobs. Just small change is also enough and make that changes after 9pm night so morning when HR’s search u ll be on top.
These are some tips for getting calls.
Hope it helps.
I felt naukari platform is good for job search.
Never stop giving interviews, i gave more-than 15 interviews to get a job so keep going. More interviews you attend more confidence and more knowledge u will gain.
I learned so many of them from @interviewhappy and it worked for me
All the best 👍🏻
Great lecture sir, please make complete react course
Thanks Sir for such a great content.
You’re welcome 😊
Thank you for helping
Thank you very much for your React JS FAQ.
My pleasure 😊@krishna
❤ from TamilNadu..
I got an offer from HCL for Fullstack role (DotNet + ReactJs)
Your videos are very very very helpful to clear the interviews.
Thank you so so so much for you.... 🙏🙏🙏🙏🙏☺☺☺
Keep posting, keep supporting...
Do you have prior experience in full stack role?
@@mehr4294 yes bro
congrats bro i hope i can land a job when i start hunting in february
Your achievement has truly filled my heart with joy. Celebrating your accomplishment and wishing you continued success. Thanks for sharing.
Thala valthukal thala aim for bonus
Hi Happy, first i would like to thanks for efforts in making vedios which are helping thousands of people. I had 4 years as a .Net developer but when I started giving interviews i felt like am zero. But then i started watching your videos and now i have 4 offers and one in pipeline, whatever questions i used to get in interviews 98% of them were on ur channel. It helped me lot in my career and i have recommended it all my colleagues. Thanks a lot Happy… just like ur name says u made so many peoples life Happy 😊 all the best for ur channel and you ❤
hi muje thoda guide karo na ki apko scenario based coding questions puche the kya
@@jayeshmahajan4213yes in some companies not in all
IS IT RECESSION???
Many candidates ask me.
Sir, right now the market is not good. What should I do?
And 100 times I said that.
Don't let your fate be decided by circumstances.
Follow your goals and grow more and more.
Even if recession or firing is real???
Are you waiting for your company to fire you?
Go give some interviews and be ready for any situation.
Crack the interview and don't accept the offer. Simple without any harm.
(But the day you will crack the interview, your thinking will change positively)
But please DON'T GIVE EXCUSES and DON'T SPREAD NEGATIVITY.
Wish u share ur interview experiences
@@jayeshmahajan4213 yes in some companies
Can you create a video for the Node.JS interview?
Very informative! Thank you!
And do u have online courses for react , redux sir?
Thanks for the new year gift 🎉🎉❤❤
You are so welcome!
It is very informative within small time frame Thanks
Thanks for liking
Thank you so much😊
It will helps alot
Happy to help my friend
I have selected as a software engineer by preparing with you videos 8 months back
I appreciate how you shared your success with us.
Thanks and Congratulations
This playlist was golden. Thank for providing such good content and your efforts sir. Make more playlist like this. It really helpful
So nice of you
Infinity times thank you very much sir ❤❤❤❤❤
Always welcome and All the best @AliHaider
Best Tutor!
Glad you think so!
Thanks you so much.. it helps a lot..
You're welcome!
Hi sir , please upload videos on Azure with .NET Core interview questions
Thank you for this video. It is good and easy to understand for revision as I am still giving interviews as fresher. Please bring a Redux interview video. Interviewers have increased the bar and ask questions that a 1-2 year experience will bring on the table. Thank you.
What questions you are being asked by interviewer
Can you share those.?
we want same video of node.js of 200+ interview questions
Great work sir! Can you please make a similar video for React Native Interview Questions? I couldn't find a proper video for react native on youtube.There might be many students like me facing the similar issue. Please help us out!!!🥺
Really thank you for this share!
Glad it was helpful!
Wow great content ❤thank you 😊
You’re welcome 😊
You have a very soothing voice 😊
Thanks
Happy which laptop you are using for visual studio development
Need to buy a laptop as a .net developer
Kindly suggest
could you please make an interview questions video on Typescript as well? your videos are very useful sir. Thank you :)
Great tutorial❤
Thank you! 😊
Thanks . I am a java backend lead with minimal react handson . Useful for interviews😍😍
All the best
thanks a lot for this!
You're welcome!
luv u sir
Thank you Happy Sir for such a detailed explanation. I recently cleared the interview and got an offer letter. ❤🎉
Wonderful , Cheers to you for a job.
This accomplishment is just one step on your journey.
Good luck
Hi Sir I request you please create video MVC and Core
Very well put. Very nice learning video
Thank you 🤗
Thank you so much sir 🙏🙏🙏
Most welcome @roopa
If possible make some content on design patterns and cloud concepts.
What kind of one should make to put in resume??
Hi Sir,
I've been working as a Java full stack developer for about 5 years. I regularly watch your videos and am currently getting ready for job interviews. Could you share some guidance on what compensation I should consider if I get selected? Just a figure for city like Bangalore
Sir please make video on nodejs
Sir if Possible.Please Make a Interview question vedio on Node js
Thank you sir ❤
You’re welcome 😊
thank you
Hello 👋 sir
Very nice very much superb explanation owsom
Thanks and welcome
please make interview question on Angular
Great knowledge 👍👍
Thanks for liking
Sir I am preparing for mern stack job .. is dsa is required .. if required then how much .. like till array string or stack queues linkedlist will also be asked ..
Hello Sir , where do I have to buy the interview Q&A PDF
at udemy OR imojo ??????? Is both links are same? will provide the same material??
sir, plz make video on mySQL top QUestion.thank you helping.🎁🎊
thank you very much...
You're most welcome
I'm preparing a Full Stack with PHP
Learning react how much important? For .net developer?
Great videos ❤
Glad you think so!
Thank you so much
You're most welcome
Please provide for Angular also sir
Thank you it is very helpful I have cracked interview because of your videos
That's great! congrats brother
Really this video is awesome. You put your all efforts in this video. It will help each and every developers and help to getting the job. Thank you sir for make us batter and strong in react. I think i will get the job soon after watch this video and revise it 2 or 3 time. Again thank you so much sir❤.
Thanks a ton
very useful video
Thanku very much
Most welcome @ravira
one thing i want to tell you please break your videos into chapter like timestamps ... it would be more useful.
can you plz upload the redux concepts questions also
Thankyou Happy i cleared 1st round yesterday it helped me alot, hope i clear all rounds and get the offer.. om namah shivay!
All the best
❤ this gift
Thanks
Damm it's so good love from Bangladesh
Thanks a lot
Thank you sir
Welcome
Q1. What is React? What is the Role of React in software development? Q2. What are the Key Features of React?
Q3. What is DOM? What is the difference between HTML and DOM? Q4. What is Virtual DOM? Difference between DOM and Virtual DOM? Q5. What are React Components? What are the main elements of it? Q6. What is SPA(Single Page Application)?
Q7. What are the 5 Advantages of React?
Q8. What are the Disadvantages of React?
Q9. What is the role of JSX in React? (3 points)
Q10. What is the difference between Declarative & Imperative syntax?
Q1. What is Arrow Function Expression in JSX? V. IMP.
Q2. How to Setup React first project?
Q3. What are the Main Files in a React project?
Q4. How React App Load and display the components in browser? V. IMP.
Q5. What is the difference between React and Angular?
Q6. What are other 5 JS frameworks other than React?
Q7. Whether React is a Framework or a Library? What is the difference?
Q8. How React provides Reusability and Composition?
Q9. What are State, Stateless, Stateful and State Management terms? Q10. What are Props n JSX? V. IMP.
Q1. What is NPM? What is the role of node_modules folder? V. IMP.
Q2. What is the role of public folder in React?
Q3. What is the role of src folder in React?
Q4. What is the role of index.html page in React?
V. IMP.
Q5. What is the role of index.js file and ReactDOM in React? V. IMP. Q6. What is the role of App.js file in React?
V. IMP.
Q7. What is the role of function and return inside App.js?
Q8. Can we have a function without a return inside App.js?
Q9. What is the role of export default inside App.js?
Q10. Does the file name and the component name must be same in React
Q1. What is the role of JSX in React? (3 points)
Q2. What are the 5 Advantages of JSX?
Q3. What is Babel?
Q4. What is the role of Fragment in JSX?
Q5. What is Spread Operator in JSX?
Q6. What are the types of Conditional Rendering in JSX? V. IMP.
Q7. How do you iterate over a list in JSX? What is map() method?
Q8. Can a browser read a JSX File?
Q9. What is Transpiler? What is the difference between Compiler & Transpile
Q10. Is it possible to use JSX without React?
Q1. What are React Components? What are the main elements of it?
V. IMP.
Q2. What are the Types of React components? What are Functional Components? V. IMP. Q3. How do you pass data between functional components in React?
Q4. What is Prop Drilling in React?
V. IMP.
Q5. Why to Avoid Prop Drilling? In how many ways can avoid Prop Drilling?
V. IMP.
V. IMP.
Q6. What are Class Components In React?
Q7. How to pass data between class components in React?
Q8. What is the role of this keyword in class components?
Q9. What are the 5 differences btw Functional components & Class components? V. IMP.
Q1. What is Routing and Router in React?
Q2. How to Implement Routing in React?
Q3. What are the roles of & component in React Routing?
Q4. What are Route Parameters in React Routing?
Q5. What is the role of Switch Component in React Routing?
Q6. What is the role of exact prop in React Routing?
Q1. What are React Hooks? What are the Top React Hooks?
Q2. What are State, Stateless, Stateful and State Management terms? Q3. What is the role of useState() hook and how it works?
Q4. What is the role of use Effect(). How it works and what is its use?
Q5. What is Dependency Array in useEffect() hook?
Q6. What is the meaning of the empty array [] in the useEffect()?
Q1. What is the role of useContext() hook?
Q2. What is createContext() method? What are Provider & Consumer properties? Q3. When to use useContext() hook instead of props in real applications?
Q4. What are the similarities between useState() and useReducer() hook?
V. IMP.
Q5. What is useReducer() hook? When to use useState() and when useReducer()? V. IMP.
Q6. What are the differences between useState() and useReducer() Hook?
Q7. What are dispatch & reducer function in useReducer Hook?
Q8. What is the purpose of passing initial state as an object in UseReducer?
Q1. What are Component life cycle phases?
Q2. What are Component life cycle methods?
Q3. What are Constructors in class components? When to use them?
Q4. What is the role of super keyword in constructor?
Q5. What is the role of render() method in component life cycle?
Q6. How the State can be maintained in a class component?
Q7. What is the role of componentDidMount() method in component life cycle?
Q1. What are Controlled Components in React?
V. IMP.
Q2. What are the Differences btw Controlled & Uncontrolled Components? V. IMP. Q3. What are characteristics of controlled components?
Q4. What are the advantages of using controlled components in React forms?
Q5. How to handle forms in React?
Q6. How can you handle multiple input fields in a controlled form?
Q7. How do you handle form validation in a controlled component?
Q8. In what scenarios might using uncontrolled components be advantageous?
Q1. What is Code Splitting in React?
Q2. How to Implement Code Splitting in React?
Q3. What is the role of Lazy and Suspense methods in React? V. IMP.
Q4. What are the Pros and Cons of Code Splitting?
Q5. What is the role of the import() function in code splitting?
Q6. What is the purpose of the fallback prop in Suspense?
Q7. Can you dynamically load CSS files using code splitting in React?
Q8. How do you inspect and analyze the generated chunks in a React application?
Sir make video on java spring boot.....
I am happy to hear you have published some courses on udemy But I am not able to see your courses on udemy business collection. Could you please add your all courses in business collection so that we enroll.
Sorry my friend , Courses are not available on udemy business .
You know, it would be GREAT if they would ask some of these in a React interview instead of a Leetcode question.
Hey I'm not able to find your udemy courses on udemy business account