React Interview Questions and Answers | React Interview Questions | ReactJS Tutorial | Simplilearn

In this JavaScript Interview Questions video, you will learn some of the top beginner, intermediate and advanced level questions that are often asked in an interview. You will look at theoretical and practical based questions on several crucial topics of JavaScript.

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[SimplilearnOfficial]

Do you have any questions on this topic? Please share your feedback in the comment section below and we'll have our experts answer it for you. Thanks for watching the video. Cheers!

[arunp.h]

8:32 e.preventDefault is not used to check browser errors. Instead preventDefault() method is used to prevent the browser from executing the default action of the selected element. It can prevent the user from processing the request by clicking the link

[devgabriel]

It is quite good! But it missed the main 2018/19 attraction of react... Hooks!
With that u can get rid of class components, and use functional components with state management and some life cycle hooks methods as UseEffect().
They re a lot more easier since u dont have to worry about "this." or "bind" anymore.


const[example, setExample] = useState(" ")
where example is the state, setExample is the "setState" and useState() is the default data that the state hook is biggning with (can be an array, an object, an array of object, string, number, boolean... Whatever.

[MahmoudAhmed-mflb]

The video is great.
Just a note for people who may watch it in the future, React has changed since that time as the video has some old information. Functional components can hold state now through hooks, some class component lifecycle methods are deprecated now, React context is added, redux has a toolkit now which is kinda different than redux without it. event.preventDefault() unlike what’s mentioned in the video, it’s used to prevent the default action of the browser for the event triggering.

[SimplilearnOfficial]

Do you have any questions on this topic? Please share your feedback in the comment section below and we'll have our experts answer it for you. Thanks for watching the video. Cheers!

[priyankashinde]

Very helpful thank you very much, I would like to suggest this vdo to other ppl also

[bohdan]

Thank you, great vid - very well explained. I have an interview on React tomorrow and i hope this helps!

[IndianChatGPT]

Hey Simplilearn, liked this one as it touches the basics of React.
Requesting you for more in depth content on React like using axios to perform CRUD or implement get or post methods.

[Yan-rvmi]

21:35 Functional Components are very powerful with React hooks nowadays. It's a trend to replace class components, since functional component can do everything that class components are able to, but also doing it faster than class component and the code are cleaner.

[kamilion]

This is one of the best vids I've seen on React interviews. Thanks!

[keval_yt]

Thank you simplilearn for the video. The narrator is very nice, such clear speaking helps us to maintain interest throughout the video.👏🏻

[igobortolon]

Great video! Clear, concise and objective explanation of React

[payalmakode]

Thanks for uploading this video. It gets really bored sometimes to read interview questions. I just recall all my experience once in a single video. Keep uploading latest one also. Thank you so much again 👍

[_romeopeter]

Thank you so much for this encompassing ReactJS interview questions, although it should be updated to explain new concepts like hooks, the overall idea is still the same. This will be helpful as I set to take on some interviews coming up.

[manoking]

It's really useful one for a beginner and who needs to place a lot for this one💐💐

[parthchandna]

Considering that it's a video for interview preparation, you have mentioned that state is mutable, my friend state is immutable, if it were mutable then setState would not have been required

[laharshmoturi]

This is a very glance for react for interview TQ so much

[Yan-rvmi]

15:50 React can be either server-side rendering or client-side rendering depending on how you configure it to. Especially for components that requires API call to fetch data before displaying them on the page, we can do client-side rendering by showing a shimmer before the actual data is returned. This is way elegant than showing a blank page for seconds when waiting for server-side rendering (including the time the server calls the API).

[mathearts]

thanks new subscriber here easy to learn

[Yan-rvmi]

Life cycle methods in class components are very much being replaced by useEffect, useState and other hooks in functional components. This is trending up since the begining of 2019, so for a video that published in late 2019 I believe it'd be better that you could include React Hooks. Other than that, great videos!