Learn Intersection Observer In 15 Minutes

Intersection Observer is an amazing tool in JavaScript that allows you to easily and efficiently do pretty much anything based on the visibility of elements. This is perfect for scroll animations, lazy loading images, infinite scroll, and much more. Also, Intersection Observer is incredibly performant and flexible which makes it by far the best approach.
📚 Materials/References:
Intersection Observer Article: blog.webdevsimplified.com/202...
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⏱️ Timestamps:
00:00 - Introduction
00:50 - IntersectionObserver Basics
05:20 - IntersectionObserver Options
11:11 - Infinite Scrolling Example
#IntersectionObserver #WDS #JavaScript

[@mwdcodeninja]

I love your content. No fluff, through, and with practical use cases. Love it!

[@aram5642]

One of the best tuts on this topic. No bs, great pace. Respect!

[@LennWeltmeister]

Ikr, I finally learned how to handle Int Observers

[@Elenthiriel]

There are 2 things that are absolutely true about your channel and you 1 - You really simplify the web for US 2 - You really helps us build our dream project sooner You are awesome, love ya ❤

[@DarkSomaX]

Man, this is the second time one of your videos clarified the concepts of JS, the first being the difference between nodes and elements with your cheatsheet, thank you for these videos, they are of great help for someone learning JS from 0 to advanced!

[@onthecodeagain]

I really really dig the pace of this channel as well as how the content is covered. Thanks for the video :)

[@wordinarius1950]

This guy is my favourite teacher:) the best tutorial on this topic so far! He is teaching only the necessary things and keeps the videos as short as possible👏 very practical!

[@MrJettann]

I was looking for it so long, so accessible and understandable! Thank you so much! Now I look forward to continuing!

[@user-py2kk2bg3j]

Your blog on this topic of "Intersection Observer API" is phenomenal. NOBODY would have ANY Doubt after calmly reading through that blog... Thank you

[@SridTech]

Video with a great pace. You actually painted my grey on how those fancy websites do that animation on scroll. Thank you kyle.

[@MarshallBanananana]

This is the fifth video on Intersection Observer I watched and it's the first one, where I'm starting to grasp the concept. Thank you!

[@JordanAF808]

Whenever I'm stuck, I can bet money that this channel will have a clear, informative video to help me out. Thanks!

[@gmaitechnologies]

Thanks for this. The clarity and preciseness is just what I was looking for.

[@NamNguyen-oz8uj]

I'm doing my project that needs intersectionObserver for animation. I learned a lot from your video, really helpful. Thank you very much! 🙏🎉

[@hermannrudas]

I've passed 4 days trying to get into this topic using different sources once here, Mr Kyle in less than 15 min not only solved all my doubts but i've also learned how to add infinite images using I-Observer.. Thank You very much

[@piusvictor8780]

Amazing Tutorial, everything is clear and on point, Great Job Kyle

[@surench862]

You makes life much easier. Thank you so much for your effort. Your all tutorial much clearer, simpler and precise.

[@robertrynard7397]

Wow I searched your channel for this exact video yesterday! Your videos have been a huge help thank you so much!

[@christiansaborio410]

4:53 into the video, paused it, and with what you explained I was able to make a shopping cart fixed button appear after the logo of website was scrolled out of sight - great explanation!

[@yinonelbaz5309]

What an amazing feature I was generally looking for a solution to another problem but it's going to make it easier for me in so many situations Thank you so much bro for the great explanations and quality content you upload

[@krishgarg2806]

Thank you! I knew about this but was always confused on how to practically use it. Thanks

[@danilaFro]

Cool, thank you! I was looking for a good lazy loading explanation for a long time

[@ashy7198]

Great tutorial was really easy to follow! I forgot to add the align-items:flex-start to my own follow-along of this, and it had me scratching my head as to why it didnt work, on the plus side, I googled hard and now have an even better understanding than before! Cheers! :D

[@murolem]

wow never heard about this 🙉 this is totally gonna be useful for loading and unloading for big amount of elements

[@dragonboy99]

Oh wow! This is definitely new animation/scrolling knowledge for me. The video was well constructed too. 👍

[@JamesJansson]

This was really concise. Excellent tutorial.

[@CreativeTutorialsWeb]

Really loved this tutorial this is the best one ever. Thank you for teaching 😎

[@diogosoares1309]

Hey Kyle, I just went through the MDN documentation and came to your video only after to consolidate the knowledge. I must say you've put a masterclass on display! Keep up the great work, I love your channel.

[@sanjitselvan5348]

Man! I searched a lot on this topic, but hadn't found a satisfactory explanation. I understood this concept thoroughly after watching this video. Thanks a ton!

[@Hafsa0526]

Hey Sanjit. Seems like you are clear with your concepts. Are you open to internship/job opportunities in web development?

[@user-mp4wh9sk6k]

Kyle, thank you so much, you are the best web dev instructor ever. I bought your JS and React courses, the content is amazing, and I don t know how you do this, but every time I ask a question in the course, I get a full answer in the next 24hours. I m progressing a lot and that s thanks to you. and now, I m looking forward for your Next.js course. ) Thanks++++++++

[@lauralegerofficial]

This is great! I was making a game, and this is just what I needed.

[@damjan4375]

Best explanation I found. Great work as always!

[@EmaCovers95]

Another day avoiding being fired thanks to tutorials. I love you man, thank you ^^

[@fenrirlokison537]

Again, looking for a specific topic and finding a tutorial from good old kyle. Man I like your tutorials. One time watched===understood

[@Powerful-Manifestor-]

Explained so clearly and truly simplified it :)

[@FabianAmran]

Great videos man. Keep this format. I like how you don't waste my time with intros and nonsense

[@royhyde8842]

Man this is a life saver for lazy loading and infinite scrolling. woow Thanks man.

[@christopher7540]

fantastic video, i was just came across to a website with similar animation and thought how this is possible and after a few hours this video popped out. thanks

[@benjaminasracas4525]

Loved the video, hope to see more tutorials like this

[@user-mu6fj1ul8l]

Thank you for making this video! Im actually looking the way of doing this effect on my project!

[@sarbajitbhattacharjee6652]

Your videos are truely simplified. Hats off👌👌

[@razzasizer]

this is an excellent video on intersection observer.. thank you kyle!

[@DannyRoyJenuil]

Thank you so much for this tutorial. Really helped me to understand the Intersection Observer API!

[@Hamid-ej4ol]

Thanks man, although i'm a beginner, with your tutorial I learned the Intersection Observer so well.

[@said-magomeddzhabrailov7911]

This video helped me fully understand this API. Thanks

[@steveh7922]

Thank you! I'm 100% using this as soon as I get back to work

[@SchalkNeethling]

Thank you for the incredibly well explained tutorial. 👍

[@mohammadalaaelghamry8010]

Amazig video. And amazing way of explaining the subject. Thank you that was very clear and useful.

[@kennedya7848]

wow this is a new topic for me

[@anshrusia1347]

Great explanation at a perfect pace. 🙏

[@frankiii9165]

Thank you so much for this amazing tutorial. I couldn't understand and get to work the foreach method so I used for-of instead. Just a few lines and there's an amazing effect.

[@end4567]

Pretty much, forEach is another way of looping through arrays. The first argument inside the callback is always the current element, regardless of what you type inside. Second argument is the index of the current element. Third argument is the entire array you're looping through. array.forEach(function(curElem, i, arr) {}) I hope this helps

[@danieldbird]

Very thorough. Thanks Kyle.

[@iamjustine1]

Best tutorial, simple and easy to understand.

[@OldManBears]

Thank you so much Kyle, you sir, are a rockstar. This was incredibly helpful!

[@kirankothandan5529]

This is really wonderful explanation.Thank you ❤

[@megayoltic]

I was just looking for something like this. That you very much!

[@rcarias78]

Really enjoyed watching this tut (and your others). Very clear and concise! Hopefully you release the next ones for Mutation and Resize. Question, do you have one on Tailwind design system (or your thoughts on good design systems)? Also, what software do you use (recommend) to record your tuts? Thank you and keep providing the Knowledge for us all !!!

[@74Gee]

Nice tutorial, perfect speed and level of detail, I would also add a function to remove some of the old cards to avoid a tiny scroll bar.

[@FacePlat3]

Soon as I see a JS feature I don't know I clicked 😄. It really helps that you keep focusing on JS specific tutorials becuase it makes me love JS more.

[@ElatedBlue]

This is amazing, I definitely need to use this!

[@tumon001]

Super Detailed Explanation

[@codefacileWK]

Awesome video, as always. Thank you !

[@smothie96]

Hello I was wondering how to understand intersection obeservative and found your video. It was very helpful and easy to understand! Thank you ☺️

[@funnylifestyle8174]

I love how you explain complex staff in a nutshell👏👏👏

[@sicfxmusic]

Read his channel name 😁

[@vanluutran726]

Your video is so good, it's helped me a lot. Many thanks.

[@hzaharr]

I was just now thinking about adding some animations to my portfolio website and boom... There your video is! :D

[@busyrand]

Thank you for this... I always wondered what this was called and the best way to implement it.

[@rajatmalviya1097]

You are great bro, nice explanation.

[@hussainmusthaq5567]

Highly appreciate your contents. They help me on the daily.

[@Hafsa0526]

Hey Hussain. Have you created projects in React/Node js? Would you be interested in exploring job opportunities in software development?

[@joshuamichael845]

Very comprehensive and precise 💯

[@user-bx6ny3bb8p]

Thankyou Kyle now I understand intersection observer, Now I fixed my bug on my scrollspy active nav with fix navbar with the help of threshold adjustments

[@carlos9484]

thanks bro. i've benn following your tutorials and you helped me a lot🙏

[@SonuSindhu]

Great explanation, really loved 😍

[@stevenox3383]

I feel like such an idiot....I wrote a little virtualization component that does this very thing having no idea this video existed! This really helped solidify some of these concepts, many of which I just spent the last few hours learning via api docs. Great stuff!

[@thisisfabrics]

Thank you so much!!! It's very amazing that I spent two hours trying to write "treshold" instead of threshold💀

[@bernarmay1950]

This is a beautiful explanation👍. I love it

[@Agha1]

Truly simplified. A big thank you from Syria ❤

[@DannyFJhonstonB]

This is amazing! Thank you for sharing!

[@technologyguy2325]

This is what I was wondering about. Thanks kiel !

[@alexeleave4551]

Wow! What a cool thing, thanks for sharing us. Gonna try that. No longer have to subscribe for the scroll events on window, haha.

[@MrAbbo11]

Awesome! You are wonderful person and a brilliant teacher!

[@nikhil6842]

Thanks Kyle, for such an informative video

[@emregokmenler613]

very good explanation thank you:)

[@CodeCraftersStudio]

Very nice tutorial. Thanks a lot for it

[@crystallikecoding4457]

Thank you bro!!! Great job.

[@mangojc8977]

Very practical. Reminds me of how google images, facebook, twitter, pinterest... loads images the further you scroll

[@waseksamin3216]

This is soooo cool. I love it😍. Thank you for teaching

[@ashkanpower]

This is totally random, but just today I was doing this by checking elements positions! 😂 Thx and subscribed.

[@yahayaoyinkansola8258]

Thank you so much for clarifiying this API for me. i totally get it now!

[@Miguel-sg7zh]

Thank you very much, you have helped me a lot ❤

[@sergiorey2049]

Very well explained!

[@ankitathombare2189]

Thanks Kyle. This video is awesome . Can you please make a video on virtual scrolling ?

[@jenso413]

awesome lesson, thanks!

[@catalinim4227]

Awesome, thanks! More please!

[@yehudachanaringler417]

Wow. Well done! Very informative

[@dienazty8820]

Just came across this! The entire video is gold, but the lazy loading and infinite scrolling that you cover starting at 11:31 is absolutely dynamite.

[@joelspinelli3701]

Excellent video, thanks!

[@RianY2K]

thank you, this tutorial is very important

[@pioSko]

That's so cool. Thanks for always showing us the cool hidden features. I should RTFM more often lol

[@PhilMinecraft]

this is what I need for months!!

[@lostsouls3151]

Cool feature. Definitely will use it. Thanks!)