How a React App Works Under the Hood

[@testowastestowy2498]

I am self-taught programmer. I work now as a professional software developer in international corporation, but to those days I'm amazed how most of tutorial and article creators start they explanation from "How" not "Why". That's why videos like that literally make my day. Thank you for your work in the name of community.

[@PhalgunRangaraju]

Huge thank you. As someone who's coming back to frontend after a break this is a helpful video.

[@richardwilliamsmusic]

Phenomenal overview of so many of the complications with React! But I got confused when you also jumped around with Node

[@JoeyLutes]

been writing JS all year and this helped solidify my mental model of this stack, particularly how React uses Babel to parse JSX

[@PortEXE]

Making the video helped me solidify my understanding as well

[@iancuvlad7368]

Extremely comprehensive explanation for webpack, you helped me a lot.

[@simple8810]

This is very helpful video ,I am working on react from last 3 month but had no idea of how react work under the hood, So I learned here babel, webpack , node module, virtual DOM and browser DOM Thanks a lot man

[@bushbuddyplatypus]

Very welcome info less that an hour before my job interview. Pitched just right and I feel I know a lot more more now. Thanks

[@itsankk]

The best video I found after searching for 'How React works'. Very clear and simple to understand explanation. Thanks.

[@waseemmehmood5685]

The explanation was so simple and straight 🙌 well done man 🔥

[@RizwanUllah-w1m]

working in react a lot finally i understood that how react works thanks to port EXE

[@dani3l898]

It's the 12th of September, 2022 and am watching this on my phone hoping one day I will get my first job as a React Developer.

[@vishalsrane]

Most knowledgeable video I have ever seen on react. You are the best!!

[@bertramjaylangruto1465]

The best explanation about react I've ever watch. Thank you for this!

[@romans7319]

Thanks a lot, man. Clearly explained everything. Exactly what I searched for.

[@coreyamccoy]

This is by far the best explanation of how React works from both a technical and application standpoint...👏🏼...👏🏼...👏🏼 (well deserved slow clap)

[@nayeemahmed5169]

This is so nice demonstration. This helped me a lot to understand the whole thing. Thank you so much.

[@Mikevets]

This video needs to be seen by more people.

[@PortEXE]

I hope it does!

[@_____AjCoder______]

It couldn't be explained any better !! thanks bro 👏👏👏

[@Maxim9575]

it's nothing, there were no any words about fiber core of react, trash

[@israfilhossen7639]

Thanks for the awesome video. I think it will help me to win the fear of interview for my upcoming job.

[@marc-y5e]

Hey tomorrow morning I have an interview where I find out if I was accepted or rejected from a front end role at a really nice company. I don’t know why I am watching this at 5AM but this video was just crazy good. Good job!

[@marc-y5e]

Update: I got the job

[@aaronalquiza9680]

@@marc-y5e congrats! i'm an advanced angular developer and also having Fullstack React interview next friday (May7) and I'm scared shitless as I haven't done interviews in 5 years. lol

[@wufei523]

Very good explanation in a way that makes sense to beginners

[@omarlyadini9765]

insane explanation, you are doing an amazing work, love it thank you

[@svetozarstanev]

Amazing video, really helps understand the technology as whole.

[@randomdamian]

Finally some real content, thanks for explaining love this!!! More pls 🥺😚

[@HariPrasad-qe3hd]

This is perfect for beginners ! Thanks man !

[@philmyglass877]

Great vid and good explanation for something that is quite complicated for a newbie to understand!

[@scabbage]

Complete new to the frontend world. This intro really helps.

[@vatsee]

Thanks for the work and for the explaining how it all ties together. Appreciate it!

[@21scottgibson]

Awesome video, just what I was looking for

[@narendrachowdary6894]

Clear cut explanation , Namaste 🙏

[@aidThompsin]

Dude out here with a mesh mic on his face looking like Bane from Batman x

[@SachinKumar-ss2zx]

Great video man! Thanks for the efforts :)

[@hardikpoudel3011]

this is really a next level introduction and those who have unlike the video is definitely going to hell

[@JakeJJKs]

If you look closely in this video, you can see that there's actually a person behind the microphone. This person is likely the narrator in this tutorial.

[@namankeshari7332]

Thanks a ton man for this one!

[@joelspinelli3701]

Excellent explanation. Thanks!

[@FreedomForKashmir]

It was exactly what I was looking for. Thanks

[@alanhunt3772]

Thank you for covering so many different technologies, it certainly was eye opening as I start looking into learning React.

[@PortEXE]

Glad I could help!

[@sourav6645]

That was some awesome explanation

[@kirankandula2779]

Thanks for the insights and explanation.

[@PazShaviv]

Excellent explanation!!

[@krishaengineer9754]

Very helpful! Thank you!!

[@PortEXE]

No problem!

[@prathameshmali3888]

Very well explained. Thanks

[@kingsleymagnuseweka5966]

absolutley amazing crystal clear explanation, React 100% downloaded into Brain..."Now I know kungfu!" - Neo, The Matrix!

[@verywellrounded]

This was awesome. Thanks 🙏🏾

[@gauravgailakoti]

excellent explanation !

[@aqibsaeed3229]

Great explanation. Thanks

[@stephenmooney7468]

very good! easy to understand thank you

[@Ashkuvita]

very informative thank you so much

[@kaypakaipa8559]

fantastic tutorial

[@erhnml]

Thanks man, I understand React.js better now.

[@SarbjeetJohal]

Great explanations!

[@caioargentino5307]

what a helpful video, thanks!

[@axelgrind]

Helpful video, thanks!

[@wulfert93]

very helpful! Many thanks

[@diwangaamasith86]

Wow that is nice explanation. Thank you...

[@redori]

Really great video man. I think video could be a bit better if mic isn’t covering your face, idk why but it seemed odd to me

[@chamith2285]

Great explanation

[@owenmurphy2022]

This video is great for beginners but I was looking for something that explains react as its core and the design followed, and the component lifecycle. It seems you talked mostly about Javascript and the tools that react uses as the most basic level which occupied most of the video.

[@ArchyWhite]

I have a question? Will you be able to show us on how to react a regular website. I created a website. Now, I would like to create a react website version of it. Thanks for the explanation.

[@PortEXE]

Hey that’s an interesting idea! I may do that.

[@pitbul67204]

Great Explanation

[@al-gassimsharafaddin7289]

Thank you so much!

[@GGg-jq5uv]

insightful 🔥

[@tatyanatarasova6480]

Thank you! would be much better if you put more pictures, diagrams, texts of what you are talking about. thank you agian.

[@muzza49]

Wow you have a flair for explanations!

[@faycourtney]

Love this video - also just curious how you got into making video tutorials, and would love it if you made a video on that

[@thehaptiK]

then make a video of the making of video tutorials

[@cjjb]

Excellent content 👌

[@shafwong1159]

clear explanation.

[@PlasmaSnake369]

I was basically just wondering if the react hooks syntax was valid JavaScript or if that's just like JSX that has to get transpiled

[@artahir123]

what explanation do you got ? i am also wondering about it and where should i know how exactly react works under the hood ?

[@LukeryaPereprygova]

Visual aspect note - it's kind of weird to see half of your face blocked by the mic and pop filter all the time. Maybe consider choosing a different angle

[@PortEXE]

I’m just going to get a massive pop filter so that all you can see is the pop filter 🤣

[@LukeryaPereprygova]

@@PortEXE PopEXE

[@ibrahimkhurshid4339]

Thanks Pal !!!

[@jashanpreet832]

Great content

[@muhammadsiddiqui2244]

Amazing stuff

[@yanfengliu]

Nice video! Could you please remove the vignetting effect though? It makes part of the code really hard to see

[@aaronalquiza9680]

as a web developer for 7 years, i already understood how most of it works, and was expecting explanations on the Diffing algorithm itself. but this is very good content for web developers just getting into React.

[@commondev2595]

Same i am looking for how Diffing actually works. Did u find a good place to read/watch ?

[@fbiindia9661]

Let us know if you find that

[@HunterAshner]

MF Doom poster A+

[@baskaal]

"The rest is empty with no brain but the clever nerd"

[@hardikpoudel3011]

what is the difference between transpiled and compiled

[@PortEXE]

Transpilation basically converts one language into another. Compilation converts your code into a lower level machine-like code. These terms can be different depending on who you're asking too.

[@danielromeo99]

y dark screen??? but great video

[@bakarandguladze]

12:43 Diffing algorithm

[@BabarAli-yb1eg]

This is more like "how create-react-app works under the hood" not react

[@arunvishwakarma2779]

I literally loved the video, got most of my doubts cleared. However, I have one doubt, when I tried Babel in their official website, and tried to use Arrow function which is basically ES6, on the right hand side exact thing was there. I thought Babel converts to ES5 so I thought Arrow function will be converted to normal function

[@cocolasticot9027]

I think that's because our latest builds/versions support es6 already. You can remove everything in the "targets" field, it will be converted to es5.

[@simple8810]

I tested the same, it gives me the same function and I had read that babel will convert the arrow functions to regular function as in es5

[@ikurbano]

Thank you! but, please loose the background music, it doesn't help with focusing on the material, which is great, btw, content-wise and delivery-wise.

[@cypher9000]

What's with the crazy vignette all over the place? Is it to make the code look artistic?

[@PortEXE]

It was an accident 😅

[@abdelaesus6678]

I really don't understand how React can be anything other than a framework. It makes you think and organize your code in a specific way. If someone could explain to me, I'd be interested.

[@PortEXE]

The React ecosystem as a whole could be thought of as a framework, however React itself is simply a JavaScript library that you import and use as you please.

[@abdelaesus6678]

@@PortEXE Ok, I understand. Because what people refer to as React is actually React + react-dom. So react is a library, but coupled with React-dom or React-native, it becomes as framework. Is that it?

[@PortEXE]

Well react-dom is also just a library, it’s when you start to think of React as React/ReactDOM, Babel, Webpack, React Scripts JSX, etc that it looks more like a framework. But in reality these are all completely different tools that exist separately from each other.

[@abdelaesus6678]

@@PortEXE ok, I see. I thought JSX was a feature from the React library

[@i-am-the-slime]

I was disappointed by this video. I was hoping for an explanation of how React works. What happens when I register a hook, is it there a lifecycle, how does it diff the VDOM etc? Does anybody have a suggestion on a video that explains that?

[@abdullahsoomro6238]

Thank you

[@vivekkumar36732]

Fantastic 😍😍

[@donotletthebeeswin]

JSX is not HTML. It is a subset of XML.

[@vishalsaraganachari1604]

Nice content 👍 but dude you have to go little slower , it's very beneficial for non native English speakers.

[@maelstrom57]

2:46 setLoggedIn(isAuthenticated());

[@DanKaschel]

I was hoping for less about tooling and a deeper dive into the mechanics of react, such that I could build an intuition about how react will behave.

[@Andrew-hl7xq]

Great vid, less vignette m8. ;)

[@inspiredbymichansenpai2393]

Thanks

[@mirtauhidulislam7493]

Great!

[@romaroma7514]

wonderful

[@josemiguelochoa5372]

Great explanation, but could you please remove the side shadows at least when you're showing the code? it's annoying.

[@elduderin00]

This is not how Rect works under the hood at all. The title is super misleading. I expected to hear about virtual DOM, reconciliation etc?

[@DanKaschel]

He brought up both of those topics.

[@BoazRymland]

Nice video, although the title is a bit misleading as its not so much about React under the hood but more about the environment and tooling typically used with React. I would love to see the follow up on this with the real internals of how React works under the hood

[@akashshrestha01]

great