10 React Hooks Explained // Plus Build your own from Scratch

[@albirtarsha5370]

The React documentation should link to this video.

[@day2dayja110]

That google listening to your thoughts and the algo working in the background lol

[@TheSaintsVEVO]

This channel's videos aren't beginner friendly.. It only helps people who are already familiar with this stuff.

[@rafadydkiemmacha7543]

@@TheSaintsVEVO not in this case. This video is just a copy of the official (poor) docs.

[@Zach-s5g]

@@TheSaintsVEVO not really. This video is much better. The docs is.. shall I say confusing

[@jasonlough6640]

@@TheSaintsVEVO If you find something you dont know, research it and come back. This applies no matter what level youre at. Id say a beginner would get more out of this video than an expert.

[@RohitSharma-vq2gn]

Hours of react knowledge distilled in 10 mins. Felt like stealing. Thanks man, great work!

[@key2010]

ever noticed stolen things taste better than bought? ... except bricks... those taste the same

[@astrophilo2000]

facts, time is money bro that's the reason and we are lazy asf

[@kimdev11]

i really thought i would be learning react hooks in 1hr but this guy did in 10 mins, superb!

[@WellActualllyyy]

nice man i still don’t get it

[@jeremey2072]

@@WellActualllyyy it will make sense eventually, just keep coding

[@CodeSketched]

Learned more about hooks in this single video than all my attempts to learn about them over the past several years!

[@rafadydkiemmacha7543]

Interesting, because this video doesn't say anything more than the official guide.

[@CodeSketched]

@@rafadydkiemmacha7543 you're right, but the official documentation never felt welcoming enough to read through all the hooks.

[@rafadydkiemmacha7543]

@@CodeSketched I completely agree and in my opinion, this video is not welcoming neither. One of the worst ones so far.

[@shashikanthp3145]

@@rafadydkiemmacha7543 MOVE ON Hater

[@rafadydkiemmacha7543]

@@shashikanthp3145 so it's not allowed to express opinions anymore, sheep?

[@Surya-np1bb]

When I wanna know about a topic and fireship has already made a video about it is the best feeling. This guy can concisely teach any topic.

[@ImVengeance]

One thing alot of people miss is that on useState in the setter you can actually pass a function to get the prev state value you for say updating a counter which is the correct way. For example setCount(prevCount => prevCount + 1). if you where to call setCount and try modify the value based on the current count value the state would be modified based on the value at that render time. If you call setCount(count + 1) twice it would only infact increase the value by one as both calls would get the prev rendered value and overwrite each other. Hope this helps

[@souvikchakraborty9900]

wow i knew that we should use prevcount but never truly knew what could go wrong if i didn't. Thank you man.

[@KhiemKimDoPkmn]

aaaaaAaAaa​@@souvikchakraborty9900

[@codinginflow]

now I'm happy that I started learning React in 2022 too lol. I just skipped this whole class thing.

[@thelonercoder5816]

same lol. Class components are so confusing to me but hooks makes it sooo much easier to understand lol.

[@cycla]

@@thelonercoder5816 haha yeah! felt good we can just skip what was a major pain in the butt for a lot of devs in the past

[@CST1992]

You want to know them, just in case you need them. I've been using React since 2019 and I have started with class components. They are, you can say, just a more explicit way of doing the same thing you are doing with hooks. For me it's backwards: instead of getting to use a separate function componentWillUnmount(), I have to remember that the function returned from useEffect() does the same thing.

[@sathkur9]

This video is must of every react developer. He made everything so simple and easy to understand and that to about so much of react features in just 13 minutes.

[@AjeyChandhan]

You explained the whole feature set of the major change React has had in years in 13 minutes! That's just unbelievably awesome! ❤️

[@mokroargra7277]

Been working with react over 9 months now, learn something new everytime I watch one of your react videos. 🤯

[@vikas7769]

Bro I need some help

[@Technoholicplus]

This is is the only video that not only cleared my hooks concept, but also shows the shortcut method to write eventhandling and state change in one line i.e. ( setNum(num+1)}>plus ) Thank you so much.

[@Jorschm]

Wow, It was actually easy to understand the core concept of the hooks in just 10min, I have seen 40min that could not explain a hook as good as this video. Great work.

[@djvanschaik]

It is insane how well you explained all these hooks in not a lot of time without it seeming rushed/barely brushed over. Thank you!

[@n0ame1u1]

I just took an entire college course focused on React, and I learned way more from this video

[@zackyang123]

This is flawless, clear, concise, and thorough. You are an exceptional natural teacher.

[@zarghamaijaz5933]

This is the only video i have found helpful. it's been a week and i have been struggling with react hooks. I am used to writing classes. Hooks feel very intimidating to me but after watching this video, i feel confident in using hooks instead of writing classes. Thank you for such an easy explanation

[@Fireship]

Glad it helped!

[@snansahmarov1524]

I watched hours video for understanding React Hooks. This video did unbelievable, so easy, just 13 minutes. Thank you from Azerbaijan.

[@dyinginmyroom-gs2gc]

🇦🇲🇦🇲🇦🇲

[@AryanLokar]

The amount of information your videos consist is unbelievable, really appreciate your efforts

[@programmingpython584]

You youtube channel is simply dream come true for a developer. Short videos, great explanations, etc. It is just awesome

[@usmanmir5663]

You have me *”hook”* ed to this channel.

[@Onserio.]

Boooooooooooo!

[@everythingisfine9988]

Yeeeessssssssss!

[@jessejamison128]

go ahead and clock out for me

[@natman882001]

now thats how you useContext()

[@aw1lt]

HAHAHA bye.

[@elhaambasheerch7058]

Easily the perfect mix of most informative and fun coding channel on the web.

[@devmeta1478]

Dude I'm in love with this channel, speed is perfect, finally someone who is not wasting 5 mins begging for subscribe, or speaking about his life or unrelated topics... And someone who is not writing code, testing and debugging in front of us... this is just perfect srsly... Keep up the perfect work!

[@FaruhPaerhati]

My god, you explained the concepts and more in much better fashion than toiling over the docs for a week

[@fithamlakfikrie4657]

The great ability of high-level explanations about general and wide concepts in only 13 minutes. thank you!

[@MrRAHUL7777777]

You completed the 3 months topic in few minutes . Great work 👏

[@akashthoriya]

Saved my hours to prepare for interview. Amazed by this video. Thanks a lot

[@shivanigaddagimath6105]

Hi Akash! Are you still looking for job opportunities currently ? Would you be interested in exploring a job opportunity in web development?

[@kawsar.130]

One of the best explanations of React Hooks. Thank you for good stuffs 👌

[@muhammadahmedjaved7691]

never ever have I seen someone explaining complex things in simple and short words like you do you are a professional at explaining things

[@tarunkr5352]

short and simple explaination that's what devs want. this is just that.

[@nikosroom1913]

This is literally the best youtube channel I have every found. THANK YOU!

[@albertkim1809]

Thank you for this video - as a boomer coming from the old class-based ways, I wasn't up to speed on all of the built-in hooks.

[@hobbiesandmore5633]

I stumbled on this video but I’m glad I did! I was looking for ways to implement hooks in my program but had no idea what to do with them. When I watched this video I had a “Oh, THAT’S what it does” moment occur multiple times. Thanks for making this!

[@foreverhumanpodcast]

I have watched this like 17 times and I’m learning each time again lol thank you

[@aakashjadhav327]

I am watching this before my interview and it is helping me with my anxiety... I am feeling calm...

[@HugoSanchez-kd7qz]

Thank you for this! Used this a refresher and absolutely loved it. Wish we had a few more examples of each hook.

[@s4lmon134]

this is the most amazing, concise, digestible video i've ever watch. Huge props!

[@steelwolf180]

Really easy to understand and helps to point me in the right direction. For a problem, I was stuck on solving a UI component not updating by itself till I click on another component.

[@ryanmamboudjemtchemeu4289]

The best React Hooks video I've seen so far. Thank you for providing a such compelling video.

[@wardenpataski2882]

I kinda struggled to understand how to create a custom hooks before, but now I understand it after watching your explanation thank you :)

[@snghnishant]

This is really helpful for me. I started learning React without understanding component life cycle completely and was struggling a bit. Now I can useRef() of this video. Thanks!

[@saqlainalvi5485]

I wish I had seen this video when I began learning hooks. Took me months of study and practice to understand them fully. This would have been a good entry point. Most tutorials fall short.

[@Chrisknot94]

Niiice another concise hook video in plain english. This is why this is my favourite dev channel 👍🏻👌🏻

[@mattshnoop]

I have never used React before, and this video has made me that much more comfortable sticking with Vue 😅

[@degitgitagitya9473]

Hooks are beautiful. I have projects using both react and vue, both are awesome. I'm a react guy and i think it's easy to learn Vue if you already on intermediate level in React. But I don't know the learning curve if you learn Vue first.

[@sebastiancordoba437]

Omg, today i was thinking of reviewing react hooks and this video show up, thanks!

[@edwardarinin9678]

same tho...

[@irfanshaik1302]

Lol.... same!!!

[@GauravAgarwalR]

After last working with React in 2016, coming back to it again is super confusing. But this video got me up to speed real quickly!

[@ombhagwani7407]

i was here to revise my concepts and you got it all covered in 13mins , thanks a lot .!!

[@williamboshi1855]

It's definitely a tough chunk to digest but it's really interesting to have a peak at what react is since I always looked the other way toward angular and vue

[@EduardKaresli]

For non-native English speakers, I'd recommend watching the video at 0.75 speed. Pretty dense (yet high quality) information.

[@felipecabreira4321]

I always come back to this video to a fast/clean explanation of react hooks ! Thanks for the content my man ! Amazing :)

[@nukemonk]

In addition to the *useImperativeHandle* hook: you can use this if you have both a *forwardRef* and a *useRef* in your component that you want both to be assign to the same element. You can use the *useImperativeHandle* hook to assign the regular *useRef* ref to the *forwardRef* ref. This is because you can't assign two refs to the same element.

[@Lifeincuts]

This video really helped me a lot, Im doing the Meta certification but they guy explaining this on the course sounds like an NPC. Thank you Jeff!

[@himalayagupta7744]

Well done man , I didn't expect this much clarity in just 13 minutes, but you explained everything perfectly. Thanks

[@gautampatadiya6096]

Many videos I saw but this one is simple specific and easy to understand… thanks

[@CodingAfterThirty]

Another awesome video. I love React hooks. I just recently started diving into writing custom hooks. It has been an excellent way to create reusable functionality as well as not stuffing all the logic in one file. Thanks for this video.

[@nomtijorti]

Saw Angular Logo with caption (best framework ever).. that's why I'm subscribed. lol

[@anth0ni33]

Wonderful information in just 10mins. You're a national treasure!!!

[@devsauce]

- 1:34 - Ben Awad has entered the chat

[@kamaleshpramanik7645]

Thank you very much Fireship.. So much to learn from single video.

[@zacktaylor1143]

Your UseEffect explanation was brilliant.

[@3mro_coding]

Maan! I love taking tour in your channel you deliver clean and conscious contents.

[@imchiennb]

I don't need to spend more time to get understand hook concept in react. Many thanks for awesome video.

[@denistomasovic9506]

I'm not a native speaker, so it's sometimes hard to understand for me. But I'm surprised how clearly you explained hooks. It was realy useful. Thank you..

[@kristineximeno6739]

1. useState 2. useEffect 3. useContext 4. useMemo 5. useCallback 6. useRef 7. useReducer 8. useImperativeHandler 9. useLayout 10. useDebugValue not in order of the video.. tho. lol Very informative video. Thanks!!! Even 8 and 9 is described as rare, I actually use these very often when building more complicated UI/UX.

[@Lyftic]

I learned that "if/else if" computes 3 times faster if you use the "===". So I make use of that instead of the switch inside a reducer function!

[@corneasp9418]

By experience or do you have a link to an official resource?

[@pjalex98]

I have survived just with useState, useEffect and useReduce hooks, and now I can try to understand the others to implement in my projects by watched this video.

[@christoferberruzchungata2722]

This video was exactly what I was looking for. I have been struggling two days to implement a feature and all I needed was the useLayoutEffect() and I didn’t know it existed.

[@yuliavasylenko8603]

So simple and useful! Thanks a lot for explaining these things in the most understandable manner.

[@ali-celebi]

1:34 (best framework ever) - I just can't agree more :)

[@pradeepsaravanan4348]

LOL

[@Euquila]

One thing to note about `useCallback` is that it isn't _just_ needed to improve performance. Sometimes, we need it because a useEffect depends on the function which can cause infinite loop scenarios. So basically, useCallback can save us from these infinite-loops!

[@michaelraring9473]

Yeah, but only if you include all functions/variables in your dependency array, like EsLint/TS wants you to do..

[@ffelaar]

you are ridiculously good at explaining things succinctly in a short amount of time - thank you for this great content.

[@kocraft137]

Love the pace you have in your videos. And the visuals is just stunnig

[@day2dayja110]

Where was this video a year ago!!!!!! EXCELLENT!!!!!! 10000/10

[@reda_el]

Wow, I had a really hard time figuring out precisely how hooks were working until I found this video. It's so clear and explaining the fundamentals (the key). I'm literally looking for a way to join any newsletter you have because I love the way you communicate complex principles.

[@crimsoncad3230]

Angular bois finally got some love.

[@pharmokan]

Dozens of us are so happy. DOZENS!

[@juniordev4190]

@フルブライトケネス what r u talking about? V12 has just launched.

[@McMurchie]

This was amazing, it took me over an hour to write down the notes so much knowledge

[@johnnygotti1568]

I never figured out useContext until now... thank you so much man

[@punio4]

A correction for the useEffect cleanup function: It won't only run when the component is unmounted, but every time before the useEffect hook is called. In that way, it's not the same as componentDidUnmount, but more of a way to prevent stale data bugs to give the useEffect a blank slate on every run.

[@glowiever]

really? wouldn't that be non performant

[@pathumjayasuriya5902]

Thanks for quick but clear intro on react hooks.

[@AbhigyanGautam]

I am learning React and this is the video I needed

[@waseemtahir6740]

Man! That "Angular best framework ever" was the only thing I needed after watching few Ben Awad videos.

[@yashsolanki069]

This channel is the fresh breath of air for devs♥️

[@nbs0078]

Even if these videos don't explain stuff in detail, they sure give an overview of the topics......which is a huge deal to IT students like me whose textbooks don't even cover Git or ES6!!!!

[@gracewood6768]

best of the best. I never understood each of them but now I got a grasp about it.!

[@amarmohammed5644]

brilliant to watch just before a interview :)

[@wiz7903]

You always manage to put out a video that i just need in that exact moment. Simply amazing. Keep up the good work

[@riddixdan5572]

would really want to see a video that would compare react and angular. so far, react with functional components seems so easy and straightforward while angular confuses the hell out of me. Edit: Now that I have watched some beginner videos about angular, I have reached a conclusion that angular is nice and comfortable, but the only thing that annoys me is the template-based html.

[@213_sayonsom5]

Great explanation !

[@Tomas-ps2zf]

Hi! Great video as always. I'd like to add though, that useEffect clean up function (the return of the first parameter) is not only called when the component is destroyed or unmounted (as you stated here kzbin.info/www/bejne/in_LknyJhLqsbLM ), but also before the next call to it when a dependency changes. To put it more clearly in an example: const [counter, setCounter] = useState(0); useEffect(() => { alert(counter); return () => alert('goodbye') }, [counter]); When the component is first called, it will alert 0, then, when we set counter to 1, it will alert 'goodbye' and then 1, same as with 2 and so on.

[@danielzaiser]

I have never returned a function like that, remind me to try it out tomorrow

[@gerritweiermann79]

@@danielzaiser reminder :)

[@nope-zdvcz99]

@@gerritweiermann79 what, reminder is noun, not verb :v

[@yosuanicolaus]

@@danielzaiser it's been one year, have you returned a function like that?

[@user-vg7zv5us5r]

"I guess we'll never know" ©Kanye

[@_romeopeter]

This is awesome 🔥 I've been preparing myself for upcoming interviews I'm going to have and this has explained reacts hooks quite for me, it'll come in handy when asked.

[@vikram87in]

It's so amazing how this guy can pack so much data into such a small video.. respect. Great video 😍😍

[@vishmapdas7898]

I have a feeling that you will add much value to my life. Liked and Subbed.

[@shaheenumar4926]

Every second is worth watching this channel.❤️

[@mostinho7]

Done thanks React hooks can be used only at the top level inside the functional component function definition. Hooks: useState useEffect make sure to provide dependencies array, if no dependencies then pass empty array useEffect can have a cleanup function by returning a function from the useEffect callback, will be called when component un mounts useContext lets you share state from a parent component to child components without having to pass props down useRef use when you want to grab a reference to an html elements and programmatically. useContext lets I access the context from the context provider up the tree useReducer is a better alternative to useState as it allows you to dispatch events or actions from ui elements then handle these events in the reducer function. useReducer takes the reducer function which takes the state and the dispatched action so you can do a switch case in the reducer and handle them useMemo to cache computationally expensive values so that they aren’t recalculated on every render. Takes a dependency array like useEffect to decide when to recalculate the value useCallback is like useMemo but it caches an entire function definition. When you define a function in your component, that function gets redefined after every render. useMemo causes the return value to be cached, so the function isn’t run on every rerender but with useCallback the function isn’t redefined on every render. This is useful when ui elements have a reference to that function like if it’s an onclick handler. When that function is redefined the component that has reference to it will get rerendered and useCallback prevents this, it is useful when many ui elements have reference to that function useImperativeHandle

[@filipjnc]

To avoid bugs in your case you should rather use setCount(prev => prev + 1) instead of setCount(count + 1).

[@codeaperture]

True👍

[@arpansaha5638]

Can you elaborate on how this method results helps avoid bugs compared to the other method?

[@EpicKeyz]

@@arpansaha5638if you need to set state based on previous state, you should use a callback function that receives a previous state as the first argument

[@gerhard_adler]

@@arpansaha5638 Beacause if you run setCount(count + 1) twice very close to each other, count won't be updated for the second call. Meaning count will be added 1, instead of the expected 2. Meanwhile, if you use prev, React ensures the count is updated before the next call.

[@shineLouisShine]

Really good and informative video which probably should get updated once in a while. One note: 10:39 -- unfortunately this video didn't manage to make it less confusing.

[@msjahun]

Most useful video I’ve watched on hooks

[@lukas.webdev]

I just posted a video on a similar topic (in 2023) - maybe this could be interesting for you as well. 😉

[@Aba9846]

Thanks for showing the differences between functional components and class-based components

[@101kawsar]

I don’t really understand why people find useEffect hook confusing. It’s the most straightforward thing I have ever seen and I learned this thing before componentDidSh!t thing.

[@rain-techstudio2567]

This is amazingly easy to understand with just 10 minutes!! Thanks a lot great man!

[@usmanmir5663]

A video about React Native! And Compare it with Flutter.

[@monfernape]

He actually has one created.

[@MathaGaram]

It is just great if u have interview next day and u may get asked to explain these hooks with some quick examples. Specially useMemo, useCallback, useReducer, custom hooks.