Learn React Hooks: useMemo - Simply Explained!

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In this video we will learn about React hooks, starting with useMemo. This powerful React hook will allow you to fix your performance problems by memoizing a value and only re-computing when necessary. You will learn how to identify expensive computations in your components, how they affect the performance of your React app, and how to implement React's useMemo to memoize the value and use the dependency array to only compute when necessary.

In this new React world, hooks are here to stay, so it's best to learn them! In this tutorial I demonstrate the useMemo React hook, and I explain it very simply and in a way that is easy to understand. Enjoy!

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This was my first and the last useMemo tutorial. I just loved the way you isolated the concept along with a really simple explanation. Thank you!

abhishekprajapati

I am so happy that I got landed to this channel. So concise, loving it.

areebafatima

I've been struggling with this concept, but this video really made it easy and simple to understand. Many thanks!

sahasrabhujaneuron

This could be the best useMemo tutorial I've seen. And I've seen a lot. Almost too many. 😂 Oh, and I love that you keep rounding 29.999.999 to 29 million. Made me chuckle every time... 🤗🤗

amarmusovic

No one has ever articulated this topic so well. Because it's simple yet confusing. Also I was tired of watching premium full blown course about shopping cart app with tailwind and what not, all to explain the few key concepts hardly for 5 mins which eventually gets buried somewhere in the middle. Thanks for the short and sweet content.

mandardeshpande

thank god i stumbled upon your channel..i am learning about all the hooks that react has to offer through your channel..i am loving the clear explanations that you provide..not a single dull moment in the video! kudos to you sir! love you!!!

smrpkrl

As someone still new to react and web dev in general, this is awesome, the main hooks I’ve been using have been useState and useEffect. Would be great to see one about useRef too :)

RichReflectionz

The best useMemo explanation I've seen.

kacperstepien

Done thanks clear
6:50 useMemo memoizes the result of a calculation/ function call until some dependencies change

mostinho

It's definitely the best explanation I've ever seen. Thank you very much!

HerlonCosta

Thank you very much for the easier explained concepts. I'm watching your videos to understand my lessons better. Both compliment each other well.

Ksahdia

Timing the "like and subscribe" popup exactly after you explain the solution is genius. I clicked like and it felt good I don't know why lol

mehdiSupp