Learn Custom Hooks In 10 Minutes

🚨 IMPORTANT:
Full React Course: courses.webdevsimplified.com/...
In this video I cover everything you need to know about creating your own custom hooks. I go over all the main use cases for custom hooks as well as many common mistakes that developers make when creating custom hooks. In this video I will cover two different examples of how custom hooks can best be used. This is part of a series of React videos where I cover all the important hooks in React.
📚 Materials/References:
Custom Hooks Blog Article: blog.webdevsimplified.com/201...
React Hooks Playlist: • React Hooks
🧠 Concepts Covered:
- How to use custom hooks in React
- How to create custom hooks in React
- Best practices for custom hooks in React
🌎 Find Me Here:
My Blog: blog.webdevsimplified.com
My Courses: courses.webdevsimplified.com
Patreon: / webdevsimplified
Twitter: / devsimplified
Discord: / discord
GitHub: github.com/WebDevSimplified
CodePen: codepen.io/WebDevSimplified
#ReactJs #WDS #CustomHooks

[@brian-lau]

damm, i am hooked now

[@lilspelunker5613]

get out

[@anasaijaz7802]

what are yuo 14?

[@mouadrimwind8839]

I see what you did there

[@Kilopillz]

Ahhhaha I love the pun😂

[@l4webdesign186]

I like how you react to this vid

[@krisnarusdiono1304]

i have finished all this react hook series in this channel, literally worth every seconds. Thanks Kyle

[@dannnnydannnn5201]

Great series. You really helped me figure out the difference between the different types of react hooks. I was not having the easiest time trying to figure it out looking through other people's code. Thanks man. Keep the videos coming. You're great at what you do!

[@yanivgoldstein3875]

I'm usually not using custom-hooks because I lack the imagination where to use them, and video just gave me 2 great ideas, thanks ! :) It would be great if you could do more videos regarding different common custom-hooks like these ones.

[@chhavimanichoubey9437]

Yup, I think we don't have the coders' minds YET!!! or maybe we need to throw ourselves into the fire of a working environment to get creative and find use cases of various programming concepts.

[@MagiCityProductions]

You have the best tutorials. You never add a bunch of unnecessary commentary and for that I thank you.

[@deepanjii2009]

Wow man. You really have made the web simplified for us to build our project. Awesome content as always👏

[@Kilopillz]

Please keep this up this is really great. I just finished your entire hooks Playlist. Thank you😊

[@wendylee5498]

It's worth taking note that the views counts for this series dropped from 216,154 views (1st video) to 42,597 views (last video), maybe means there 's a learning curve; and I am proud that I watched all and code along. Great work Kyle!!!

[@NovaMenteMedia]

Thanks so much for these videos, they are very concise and easy to follow.

[@MaxProgramming]

Thank you! This is very much simplified to me!

[@gaatutube]

Thanks for the great series on react hooks. Will definitely have to go through it a 2nd time to let all the details sink in. But I have good overview of it now.

[@titlisarkar278]

Thanks Kyle... These videos are really helpful for beginners.

[@samartajshaikh2601]

The way you explain it, i am in awe of it.

[@BeCurieUs]

This example is perfect for me! I was creating a React project to manage Arkham Horror LCG stuff, and just had to saved in a big ol state. But for saving games serverlessly, local storage was gonna be the way I handled it. This idea will meld in nicely with saving my data, woot!

[@kostiantynkarzhanov9216]

Great tutorial! Thank you for the explanation! 💛

[@bohdanromanovich4912]

Your video's is awesome. It's so simple to understand what you are saying! Thank you so much!

[@amiturfnd]

Thanks a lot for this video. learnt something new today :)

[@aubidanaalwa4161]

you are one of the best that explains, thanks a lot for all the useful information

[@saurabhma123]

Greatly explained the concept!

[@krishnayele5639]

liked it, loved it, just the thing I was looking for. Thanks very much.

[@faris.abuali]

Thanks for simplifying react for us!

[@muhammadzeeshan07]

Superb kyle, every thing is clear

[@snaplu4683]

great tutorial series, thank you so much

[@faysal1991]

this video is so underrated, it should have like a billion likes. thank you

[@basiccodingwithadam8125]

Great little video, as usual, Kyle.

[@user-mo3cw6go7c]

You're really simplifying the web for me

[@rohitborra2507]

really great tut. thanks dude

[@VishalSharma-rn7mt]

Awesome explanation, genius guy

[@moiserwibutso4899]

Thanks for this great tutorial.

[@user-nu6ye5cm8r]

best explanation ever!! thank you

[@kamelowy]

useLocalStorage hook should be implemented in React by default, it makes the operations on local storage so clean i can't imagine doing it the "default" way again. Thanks for another great tutorial! :)

[@juliangzr4998]

Thank you very much! great video

[@l.e.nichols9382]

This is awesome, thanks so much.

[@DeepakGupta-hj2dv]

Great explanation kyle ..please make on one video Event loop

[@diegoburlandotheinformal1217]

Good job man!

[@shuuheihisagi3148]

Hey, thanks again for another video! Can you make on related to wherr to store jwt on the client side?

[@paccioti]

React and hooks are so freaking fun. I just got my first job as dev and first task was creating a frontend all with hooks, apollo graphql, typescrypt and redux. When you figure it out you can play around with data really nicely. PS great channel

[@abdullahawisimulaha]

Id love to have that kida job

[@oskarmarkin5674]

KZbin should make a two like button only for your channel because I would give you two likes

[@arunbm123]

very nicely explained

[@fkbey5756]

i use redux toolkit and it helps me a lot. but really thanks for the video. we love u

[@dmcshehan]

Thanks a lot for the video.

[@Neha-sw6ky]

Amazing video. I'm in love with you!

[@madhusudhan4001]

i have three letters for this video WTF ---- hands-down best explanation of custom hooks... thanks Kyle.

[@yashdefy]

I am "hooked" to this channel..

[@thivatutorials4040]

nice bro thanks for giving this video

[@ernestomotta5178]

Awesome, thank you

[@omarbarra3456]

amazing, thanks

[@DanteS-119]

This is great. ONE SUGGESTION: The input writing like that all the time to storage may NOT be good for performance. You should probably DEBOUNCE the input: that is do NOT write it immediately, maybe you can write it to the state in-memory immediately but to wait before writing to storage... This is especially something to keep in mind if you want to adapt this use case for API usage. I believe the only thing that you'd need to do is just set a lambda with `setTimeout` wrapped around the `localStorage.setItem(...)`, and then from the `useEffect` return a `clearTimeout` with the lambda passed in as a parameter. Because `setValue` within `useLocalStorage` (which is returned to the calling function which us using the hook `useLocalStorage`) is already based on the default React hook which will take care of setting the information to local memory. You already address the performance issues with /reading/ at 5:40 , as you are only reading when you fetch the INITIAL VALUE, which will attempt to fetch from local storage or just return whatever value was passed in to be the initial value; this in turn activates the hook for `useEffect` below that puts it into local storage. Elegant. Nice stuff.

[@tomermatmon]

This is great!

[@YRS24]

awesome learnt about local storage and hooks

[@iurii7752]

Great, thank you :)

[@SumitKumar-bu3yn]

Thank you

[@riyajha6500]

thanks, sir for such awesome video, if you possible please make some videos on react recoil.

[@user-ef2pn4zc8f]

thanks!

[@williamgogo5313]

thx already shared to Twitter

[@parasmaniseth7873]

Before knowing this...I also use to the same thing....saving things in local storage....today he made this a react custom hook Kyle do knows how to use his tools appropriately and in efficient way

[@OwaisAthar1]

Great ✨

[@justinmlawrence]

Awesome!

[@EJIqpEP]

Hi Kyle, I really like your videos and the quality of the image. What camera are you using? Thanks!

[@WebDevSimplified]

It is a logitech brio shooting in 1080p

[@EJIqpEP]

@@WebDevSimplified Thanks a lot!

[@kikiken4287]

Thanks for the good video! But I think your useTimeout function should be like something like below. export function useTimeOut(callback, delay, dependency) { const callbackRef = useRef(); const timeOutRef = useRef(); useEffect(() => { console.log('callback update'); callbackRef.current = callback; }, [...dependency]); ... } because like you mentioned, callback without 'useCallback' is different always.

[@manibarathi08]

You can even add a deleteItem function inside useLocalStorage to delete the item if the user needs to

[@muonx9649]

It just works!

[@nahida4444]

Hey, a question, does a hook persist and share the state through multiple component, like context-provider works?

[@rohandevaki4349]

at 1:19, what is the alternative for localstorage?, can we use useContext or redux for global storage, or even though if we use useContext or redux, the input value will become empty?

[@anasalhariri5474]

Kyle, how do you get the localstorage in chrome to update when the state is changing? I had to refresh the localstorage to see the new value. Can you please help?

[@MrXperx]

Mind blow video

[@amankaushik5833]

Really, really awesome video!! as always by the way I wanted to ask that can we make android apps in like plain javascript without using React Native and can we use js with C++ or python?Thanks!!

[@prabhatchanchal]

I know one way to use js with python is "eel" but not don't know about C++ with js.

[@fredhair]

Android supports c++ natively and has its own NDK but why you'd want to mix it with js im not sure. PWA is basically using js and c++ just the c++ is written by the browser vendor. Its all possible but the practicality of it will depend on the kind of software you want to write.

[@amankaushik5833]

@@fredhair hey there!! actually, I was thinking that it would be easier to make a user interface if we combine c++ with js, HTML, AND CSS maybe Node js would do it.

[@ziyadkader6767]

I am waiting for the MERN video ! :)

[@mateokks8531]

te quiero mucho, gracias

[@rogerjohn7786]

Hi Kyle please make a video on Instant search filter like youtube on react.

[@satindersingh9671]

You are the best

[@caesarbala]

so custom hooks combination of function and component we take argument and return / without return . also we can useEffect within it .

[@ayushilahariya6477]

hello i have one question i want to use the usedispatch and useselector outside the function and class component. i have a helper.js in which i am trying to call the api by using redux saga for that i need to use usedispatch and then the response i want to get through useselector in same helper class. any idea how to achieve this

[@fatfooodie]

Hey viewers, comment your favorite custom hook that you think is very useful. For example, I use "useFormFields" and "useInput" in almost all my react projects.

[@migueldomingos4570]

I use the ones you mentioned and I have started using a new one called use fetch to fetch data

[@SS-re8xb]

Is "if(initialValue instanceof Function) return initialValue();" necessary? Because if using a console.log() to print out whether it's true or false, we'd always get "false". So, what's the reason to use this line of code?

[@ridl27]

ty.

[@Kats0unam1]

Do you have a course with Hooks + Redux ?

[@boses5320]

This was a great example... However if this example would help to stay login in after refreshing ..would be great

[@akashdevgan]

One question, why will initialValue be a function?

[@uprisingalpha2065]

god damn good tho full skilled in this shit :D thx for ur video

[@sleepingUgly]

TL;DR: "It's just going to work" Great video 🙌🏼

[@vinaykumar-sg7xd]

how can initialvalue be a function. i didn't get that part. can anyone explain please

[@zlackbiro]

Now, why not to bring this to another level? build your custom hook useStateStore, then create useReducer inside, import store hook into your components and voila, you have global store like Redux. Also, you can privide that store using context api... :)

[@bryceblazegamingyt9741]

Imagine getting hearted by one of the best teachers on the internet

[@ngocdangduc3772]

Can some1 explain to me why using a function in useState can help reduce the call on localstorage ?😊

[@sanghvian]

legend

[@rohandevaki4349]

actually i tried the same code with a signle function , in the same component, and it works fine, but i cant use useEffect inside a function,for that i just made a if check, and if we want to use a useEffect inside a function, that must be a react component, or a custom hook, that is fine, but here the important thing is with a custom hook we can use it several times, instead of writing the code again and again, thanks for the awesome video,

[@willmakk]

love me some cutsom hooks

[@BharatSingh-zk8lx]

this would definitely be helpful in react native 😀

[@priyankaroberts1093]

Hey Bharat Have you built any react projects recently? Are you open to internship/job opportunities in software development ?

[@dali5010]

Good

[@kefistefi]

Is there a way to change the key somehow, since I would love to have mutliple keys for every users that let's say loggs into my page.

[@rohinchopra9812]

Even though how simple the last hook was it can be pretty handy in debugging stuff

[@priyankaroberts1093]

Hey Rohin Have you been working on any react projects currently? Are you open to internship/job opportunities in software development ?

[@PastaInformatyki]

In getSavedValue function: "if (savedValue) return savedValue" What if savedValue is false or 0 or an empty string? Shouldn't it be like: "if (savedValue !== null) return savedValue" or am i mistaken?

[@rohandevaki4349]

can you please create one more video , where we imlpement fetch web api in a cusom hook?

[@randyfix3546]

Why on the useEffect does React complain about ' key ' being a missing dependency? I've seen this in a couple tutorials now, has something changed with React?

[@goodToBeConfidential]

whats the configuration of your computer?

[@daniillitvinenko4348]

Can someone explain what he does starting 5:02? "And now we what we can do is use a function version...". As opposed to what? Does writing an explicit return statement make it a "function version"?

[@abdullahawisimulaha]

Why to create useUpdateLogger if you just can write console.log(value)?

[@omarbarra3456]

just a little improvement, for the the custom hook we can use named-parameters, in that way the order of the parameters does not matter.

[@rodrigomoura2108]

👏🏼👏🏼👏🏼👏🏼