React Interview Questions | ReactJS Interview Questions and Answers | Intellipaat

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  • Опубликовано: 28 май 2024
  • 🔥Intellipaat React js training: intellipaat.com/react-js-cert...
    In this React Interview Questions and Answers you will learn the latest and top questions asked by companies for React interview. This ReactJS Interview Questions & Answers video covers all kinds of questions starting from basic to advanced questions so that you can get benefited. We can assure you that if you watch this React interview preparation video completely you can crack any React job interview easily.
    #ReactInterviewQuestions #ReactInterviewQuestionsandAnswers #ReactJSInterviewQuestions #ReactTraining #ReactCourse #Intellipaat
    👉Following questions are covered in this video:
    00:00 - React Interview Questions
    01:12 - Differentiate Between Virtual DOM and Real DOM
    03:10 - What is React?
    04:32 - What is the meaning of Virtual DOM?
    05:51 - What are some of the important features of React?
    07:24 - What is the meaning of JSX?
    08:41 - Can browser read a JSX File?
    09:53 - Why is React widely used today?
    11:48 - Are there any Disadvantages to using react?
    13:32 - Differentiate between Angular and React
    14:44 - What is the meaning of the component based architecture of react?
    15:56 - How does rendering work in React?
    16:55 - What are states in React?
    18:37 - What is the use of an arrow function in React?
    19:47 - What is a higher-order component in React?
    20:56 - What us the meaning of create-react-app in React?
    21:52 - What are some of the advantages of using create-react-app n React?
    23:00 - What is the meaning of Redux?
    24:19 - What is the difference between props and states?
    25:21 - What are the three phases of a component life cycle in React?
    26:48 - What are events in React?
    27:47 - How are events created in React?
    28:45 - How is routing in React different from conventional routing?
    30:25 - Differentiate between Flux and Redux in React
    32:00 - Can AJAX be used with React?
    33:06 - What is the meaning of synthetic events in React?
    34:05 - What are stateful components in React?
    34:57 - What are refs in React?
    36:04 - What are Controlled Components in React?
    37:02 - Why is a router required in React?
    38:11 - What are the components of Redux in React?
    39:12 - What are the advantages of using Redux?
    40:37 - What are the disadvantages of using MVC in React?
    41:58 - What are pure components in React?
    43:04 - What are higher-order components (HOCs) used for?
    44:02 - What are keys in React?
    45:06 - Differentiate between a controlled components and an uncontrolled components in React
    46:05 - How can you tell React to build in the production mode?
    47:40 - What is the use of the second argument that is passed to set state? is it optional?
    49:33 - What is the Strict Mode component used in React?
    50:25 - What would you do if your React application is rendering slowly?
    51:50 - What would you do if react application is rendering slowly?
    54:26 - What are the predefined prop types presentin React?
    55:13 - What is React Fiber?
    56:02 - What are Hooks in React?
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    Why should you learn React.JS?
    React is a JavaScript library that specializes in helping developers build user interfaces, or UIs. React on its own is a very functional, modular way to create expressive UI, and with its single responsibility mentality, it can be integrated with other systems as well as utilize its own ecosystem to develop full single page and multi page apps.
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Комментарии • 135

  • @Intellipaat
    @Intellipaat  3 года назад +26

    Guys, what else do you want to learn from Intellipaat? Comment down below and let us know so we can create more such tutorials for you.

    • @rajav4861
      @rajav4861 3 года назад +3

      Please make tutorials on C++ STL 🙏

    • @danielumukoro2854
      @danielumukoro2854 3 года назад +2

      can you pls make a video on top coding questions companies ask for interview

    • @Intellipaat
      @Intellipaat  3 года назад +2

      @@rajav4861 Alright noted. Will upload soon.

    • @Intellipaat
      @Intellipaat  3 года назад +1

      @@danielumukoro2854 Yes of course. Give us some time.

    • @ElevateTheFacts
      @ElevateTheFacts 3 года назад

      can you provide the ppt of this as soon as possible want to study from this for my next interview.

  • @sirajahmed8034
    @sirajahmed8034 Год назад +50

    14:15 this is actually the reverse, it's angular that supports two way data binding, React only supports uni directional data binding.

  • @chandramouli39
    @chandramouli39 2 года назад +128

    Angular is bi directional whereas react is uni directional, Flux has multiple stores whereas redux has a single store. Not sure why these basic concepts are wrongly presented.

    • @NidheeshAloorDharmarajan
      @NidheeshAloorDharmarajan 2 года назад +6

      Thats what I also thinking

    • @arjunnayak9088
      @arjunnayak9088 2 года назад +17

      This guy reading out the slides is Chatur Ramalingam

    • @hahashir
      @hahashir Год назад +11

      i stopped watching at this point. i wonder what else is wrong in this video

    • @krishnendusekhardas
      @krishnendusekhardas Год назад +8

      Also angular has support of server side rendering

    • @computeraidedyami
      @computeraidedyami Год назад

      @@SwapnilWaghme Chatur Ramalingam is the best

  • @MrProbin
    @MrProbin 3 года назад +18

    13:09 react unidirectional angular two way data binding......and thanks for best interview video

  • @giselcalvo8693
    @giselcalvo8693 3 года назад +31

    Slide 24, Flux has multiple stores and redux has a single store

    • @Intellipaat
      @Intellipaat  3 года назад

      HI Gisel, Kindly be informed that Flux architecture has multiple stores that are coordinated together by the dispatcher, and when there is a change all the stores need to update themselves. But in Redux we have a single store. A single store that handles the entire application. Any changes to the store are done through actions.

    • @taykoko1
      @taykoko1 3 года назад +15

      @@Intellipaat that's not what you said in the video

  • @jsbundle9422
    @jsbundle9422 3 года назад +20

    Slide #9 it's the wrong thing. React supports one-way data binding and Angular supports Two-way data binding.

  • @kunalpatil1250
    @kunalpatil1250 2 года назад +7

    we can directly manipulate real dom in react using useref hook.

  • @Sanketda
    @Sanketda 2 года назад +7

    ReactJs is a UI library where Angular is Complete framework.

  • @zathkal4004
    @zathkal4004 3 года назад +3

    Thousand thanks sir... this video deserves way more view !!!

  • @georgejames5488
    @georgejames5488 2 года назад +3

    Angular can do 2 way data binding. Angular can do server side rendering as well now.

  • @AnonYmous-yu6hv
    @AnonYmous-yu6hv 3 года назад +6

    No don't put arrow functions in render, it will create a new function on every render and it will slow down the app.

  • @DrunkenEngineer
    @DrunkenEngineer 3 года назад +6

    Thank you very much for this video.
    Really helps in cracking Interviews.
    Even we share real time Interview Experiences.

  • @mayukhchakraborty5364
    @mayukhchakraborty5364 3 года назад +8

    Thanks for the good work😀😀👍👍. This video as well as all other courses really helped me out.. and hats off to intellipath to really dedicate themselves into this soo much🥰🥰

  • @adityamittal4357
    @adityamittal4357 2 года назад +4

    At 14:45 you say Angular is unidirectional only for data binding and react supports two-way data binding. That's wrong. Angular supports both two-way and one-way data-binding.

  • @asim-gandu-phenchod
    @asim-gandu-phenchod 2 года назад +4

    14:41 react is for client side too

  • @kumar-jatin-2000
    @kumar-jatin-2000 Год назад +3

    Have an interview tomorrow wish me luck 🤞.

    • @Intellipaat
      @Intellipaat  Год назад +1

      All the best😊. Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @pankaj2129
    @pankaj2129 2 года назад +2

    #13. Props can pass data from child component to the parent component by call back functions written in the parent component. Pls rectify this one

  • @acecrickettv
    @acecrickettv 7 месяцев назад +1

    Superb 🤝. Small clarification. React is one way data binding. 13:47

    • @Intellipaat
      @Intellipaat  7 месяцев назад

      Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @mdridoy-ef2pw
    @mdridoy-ef2pw 2 года назад +5

    at 13:42
    data binding factor is wrong.
    Angular uses two-way data binding and react uses one-way data binding.

  • @AMANKUMAR-tm8fx
    @AMANKUMAR-tm8fx Год назад +2

    so helpful for me because I go for the interview of React js today ❤❤

    • @Intellipaat
      @Intellipaat  Год назад

      @AMAN KUMAR Glad you liked it, Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @paulfleischer-djoleto4429
    @paulfleischer-djoleto4429 2 года назад +12

    I think you have to take a second look at the video. Question 24: "difference between flux and redux." You said flux has a single store and redux has multiple stores. The answer is wrong and misleading for a person preparing for an interview. Please, kindly withdraw this video and correct the mistakes. Thanks.

  • @kishorgwala
    @kishorgwala 3 года назад +9

    Guys now days lot of question's are covered on React Hooks.

  • @gustavo9758
    @gustavo9758 2 года назад +3

    Hi there man, this is good stuff but in contains some mistakes already mentioned in the comments, you may want to re-upload the video with some edition to clarify those.

  • @vlogsdiaries4250
    @vlogsdiaries4250 Год назад +4

    Such a useful Content. It cleared all of my doubts 🔥

    • @Intellipaat
      @Intellipaat  Год назад

      Glad you liked it 😊 Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @rajbannasa7662
    @rajbannasa7662 2 года назад +4

    Thank you so much sir for the lovely efforts ❤️

    • @Intellipaat
      @Intellipaat  2 года назад

      It's my pleasure @Raj Banna Sa Do like, share & subscribe to our channel to get updates on upcoming videos

  • @dimabreezy2000
    @dimabreezy2000 3 года назад +10

    I'm not agree with the statement that React is just view. With current context + hooks it can be used as a controller, and you can write models with typescript. React + Typesript = MVC

  • @patcoston
    @patcoston Год назад +2

    37:20 As of react-router-dom v6, we now use Routes instead of Switch and element instead of component.

    • @Intellipaat
      @Intellipaat  Год назад

      @Patrick Coston If you wish to get Personal support Kindly call our advisors on IND : +91-7022374614 US : 1-800-216-8930 (Toll Free).

    • @piyush93688
      @piyush93688 Год назад

      thanks.

  • @ankitgiri6874
    @ankitgiri6874 2 года назад +1

    your video is kind of quick crash course Thanks.

    • @Intellipaat
      @Intellipaat  2 года назад

      @Ankit Giri Do like, share & subscribe to our channel to get updates on upcoming videos.😊

  • @shankarpehalvansiva1671
    @shankarpehalvansiva1671 3 года назад

    Good work

  • @codewithteni
    @codewithteni Год назад +2

    wow, i didnt notice i spent hours listening to this..... this is beautiful

    • @Intellipaat
      @Intellipaat  Год назад

      @Ganiyat Yakub Thanks for watching😊 Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @DeeBhu
    @DeeBhu 3 года назад +4

    slide no.9 data binding info is wrong, please correct it.

  • @danielmaina4942
    @danielmaina4942 Год назад +3

    Just what I needed. You covered almost everything I could think of concerning a react interview ! Thanks Intellipaat!

    • @Intellipaat
      @Intellipaat  Год назад +1

      @Daniel Maina Glad it was helpful! Do like, share & subscribe to our channel to get updates on upcoming videos.

    • @rahulmule955
      @rahulmule955 Год назад

      It is really important for point of interview

  • @Sandeepyadav-sp4sm
    @Sandeepyadav-sp4sm Год назад +1

    Thankyou so much for this wonderful session.

    • @Intellipaat
      @Intellipaat  Год назад

      Most welcome 😊 Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @anilrawat0303
    @anilrawat0303 10 месяцев назад +1

    React support client side supporting using next js we can acheive the server side rendering.

    • @Intellipaat
      @Intellipaat  10 месяцев назад

      Thank you all for your active participation. SUBSCRIBE to Intellipaat to find out the right answer.

  • @deepakchalla9245
    @deepakchalla9245 2 года назад +1

    I think react is one way binding and angular is two way!

    • @Intellipaat
      @Intellipaat  2 года назад

      @Deepak challa For personal support you can reach out to our course advisors on IND : +91-7022374614 US : 1-800-216-8930 (Toll Free).

  • @rahulshaligram9998
    @rahulshaligram9998 10 месяцев назад

    You have covered a lot in this video sir

    • @Intellipaat
      @Intellipaat  10 месяцев назад

      This is just an overview of the subject. If you wish to learn from top experts and get a certification, then kindly call our course advisors on IND: +91-7z022374614 US: 1-800-216-8930 (Toll-Free).

  • @Sivabv
    @Sivabv 2 года назад

    Angular has two data binding vs react in unidirectional….. please check and update..

  • @raxitlakhatariya5915
    @raxitlakhatariya5915 Год назад

    thank you so much for such awesome content.

    • @Intellipaat
      @Intellipaat  Год назад +1

      Glad you liked it 😊 Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @hamzayousaf6103
    @hamzayousaf6103 2 года назад +2

    very informative video, my question is which country and plateform is better for applying for a react dev remote job.

    • @Intellipaat
      @Intellipaat  2 года назад

      @Hamza Yousaf Glad you liked it 😊 Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @richujain
    @richujain Год назад +3

    Hey thanks for sharing all these. Great video. I only have a single doubt. When you were talking about the differences between flux and redux, you mentioned flux has only one store and redux have multiple stores. Isn’t it the other way? As in flux have multiple stores and redux has only one store. I’m new to react, correct me if I’m wrong.

    • @Intellipaat
      @Intellipaat  Год назад

      @Richu Jain If you wish to get Personal support Kindly call our course advisors on IND: +91-7022374614 US: 1-800-216-8930 (Toll-Free).

    • @siddhantsingh1784
      @siddhantsingh1784 9 месяцев назад

      yes Flux has multiple stores where as Redux has only one they hv made mistakes in certain parts of their presentation

  • @mdramish1259
    @mdramish1259 Год назад +2

    God would bless your channel if you attach a document to read the slides

    • @Intellipaat
      @Intellipaat  Год назад +1

      Thank you so much for appreciating the content. Your feedback motivates us to make more such content. Unfortunately, we don't share the source code or presentation deck with anyone. Although, if you wish to learn from Industry Experts and IIT Faculty, do fill out this form and we will reach out to you. Have a great day!
      .
      Google Form: forms.gle/XWy7MtQPrHkgq7Pt7

  • @martinjoshevski3754
    @martinjoshevski3754 Год назад +1

    Nice Q & A! Thanks

    • @Intellipaat
      @Intellipaat  Год назад

      @Martin Joshevski Glad you liked it! Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @vibelover5444
    @vibelover5444 3 года назад +2

    These are almost based on Class based components, please upload functional component interview questions!

  • @peacehuman3963
    @peacehuman3963 3 года назад +1

    Thank you

  • @somu21083
    @somu21083 7 месяцев назад +1

    at 14:27 , its mentioned that react is two way data binding , however react is one-way data binding , isnt it ?

    • @Intellipaat
      @Intellipaat  7 месяцев назад

      Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @AmitSingh-xc9qe
    @AmitSingh-xc9qe 3 месяца назад

    Very valuable talk

    • @Intellipaat
      @Intellipaat  3 месяца назад

      Glad you liked it 😊 Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @shubhambhardwaj2054
    @shubhambhardwaj2054 2 года назад +3

    some 'vs' answers have wrong data

  • @mannahailemariam9197
    @mannahailemariam9197 Год назад +3

    Hi Intellipaat, thanks for your dedicated work in helping anyone ace the react interview questions!
    Being said that, please correct the stated difference between Flux & Redux for that redux used a single store where as Flux do multiple. Thanks

    • @Intellipaat
      @Intellipaat  Год назад

      @Manna Hailemariam Glad it was helpful! Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @Sivabv
    @Sivabv 2 года назад +2

    Please update this video with recommendations…

    • @Intellipaat
      @Intellipaat  2 года назад

      @Siva Kumar For personal support you can reach out to our course advisors on IND : +91-7022374614 US : 1-800-216-8930 (Toll Free).

  • @SupunPraneeth
    @SupunPraneeth 2 года назад +3

    why still uses classes? fucntions are way better and faster, and it not messy as classes

    • @paulfleischer-djoleto4429
      @paulfleischer-djoleto4429 2 года назад

      You are right. Classes are outmoded. But they are required in interviews. A react developer must be able to maintain legacy react systems. So, classes, though outmoded are still relevant in interviews.

  • @CodeSuraZz
    @CodeSuraZz Год назад +1

    31:10 Redux have one global store where as Flux can have multiple stores.

    • @Intellipaat
      @Intellipaat  Год назад

      @Suraj Poddar We appreciate your active participation😊. Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @yugandharsurya
    @yugandharsurya Год назад +1

    31:45 flux has multiple stores.

    • @Intellipaat
      @Intellipaat  Год назад

      @yugandhar's world Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @me_079_aashishkumarnayak6
    @me_079_aashishkumarnayak6 9 месяцев назад +1

    Useful content❣❣

    • @Intellipaat
      @Intellipaat  9 месяцев назад

      Glad it was helpful! Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @abhilashs3419
    @abhilashs3419 5 месяцев назад

    25:04 props are immutable

  • @shainoissac9451
    @shainoissac9451 2 года назад

    How to delete a row in reactt?

  • @aneesahmad1258
    @aneesahmad1258 Год назад +1

    Please correct. React is unidirectional while Angular is biDirectional

    • @Intellipaat
      @Intellipaat  Год назад

      @Anees Ahmad Thank you for active participation. SUBSCRIBE to Intellipaat to find out the right answer.

  • @rishavharsh6520
    @rishavharsh6520 24 дня назад

    Question 9 answer has error, react does not support 2 way data binding, Angular supports 2 way data binding. but here it was wriiten wrong

    • @Intellipaat
      @Intellipaat  24 дня назад

      Thanks for pointing it out, I'll correct the error in Question 9 regarding React's data binding.

  • @manumohan6008
    @manumohan6008 2 года назад +1

    React Does not support two way binding right

    • @Intellipaat
      @Intellipaat  2 года назад

      @ManuMohan Do like, share & subscribe to our channel to get updates on upcoming videos.😊

  • @ZahidKhan-th8pz
    @ZahidKhan-th8pz 2 года назад

    Angular is 2WayDataBinding and react is 1WayDataBinding 😞😞😞

  • @milindbadekar3503
    @milindbadekar3503 2 года назад +2

    You have to work on explanation part

    • @Intellipaat
      @Intellipaat  2 года назад

      Sure! Meanwhile, Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @vandanasingandipe2203
    @vandanasingandipe2203 Год назад +1

    how can we get this slides

    • @Intellipaat
      @Intellipaat  Год назад

      Please share your e-mail ID so that we can share the required files.

  • @anupamsharma7031
    @anupamsharma7031 Год назад +1

    The video is superb but @31:55 how can redux has multiple stores ?

    • @Intellipaat
      @Intellipaat  Год назад

      @Anupam Sharma Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @spideymemes7284
    @spideymemes7284 3 года назад +1

    How can we create a game

  • @SumitKumar-rr5jt
    @SumitKumar-rr5jt Год назад +1

    Can u share pdf

    • @Intellipaat
      @Intellipaat  Год назад

      Thank you so much for appreciating the content. Your feedback motivates us to make more such content. Unfortunately, we don't share the source code or presentation deck with anyone. Although, if you wish to learn (course name) from Industry Experts and IIT Faculty, do fill out this form and we will reach out to you. Have a great day!
      .
      Google Form: forms.gle/XWy7MtQPrHkgq7Pt7

  • @astronaut22
    @astronaut22 Год назад

    react js is unidirectional

  • @panjikarmohit
    @panjikarmohit 11 месяцев назад +1

    37ques

    • @Intellipaat
      @Intellipaat  11 месяцев назад

      Do like, share & subscribe to our channel to get updates on upcoming videos.

  • @vipinagarwal18
    @vipinagarwal18 Год назад

    Roooters 😂

  • @ricardorien
    @ricardorien 2 года назад

    Your accet makes everything hard to understand, sorry

    • @Intellipaat
      @Intellipaat  2 года назад

      @Ricardo Sure! We'll work on it. Meanwhile do like, share & subscribe to our channel to get updates on upcoming videos.