TRUST ISSUES with setTimeout() | Namaste JavaScript Ep.17

This BONUS video covers the fundamentals of setTimeout, how it works behind the scenes. We also discover that setTimeout does not guarantee that the callback method will be executed exactly after a certain delay. Hence, there are trust issues with setTimeout. 😅
Moreover, we will also cover the case of setTimeout with 0 delay. It's a very famous Interview question and confuses a lot of new developers.
Towards the end, I also show the demo of how you can set up exactly the same playground to write code, just like I do in these videos. Check that out and I highly recommend you to set up a similar playground and experiment a lot with code while watching Namaste JavaScript 🙏
The only request is to watch this Episode of Namaste JavaScript with full attention.
My tech gear I use every day - google.peek.link/2pba
00:00 - Introduction
00:38 - Why we have trust issues with setTimeout?
06:52 - Code demonstration of the setTimeout delay
15:35 - Discussion about setTimeout(0)
20:27 - Set up practice playground on the local system
25:02 - Teaser of the Next Video
25:36 - Thank you for watching Namaste JavaScript 🙏
Support this video series, NOT BY MONEY, but by sharing it with your friends. 🙏
I'll give my best to come up with great content and everything absolutely for free on KZbin. 😊
If you are active on Social Media,
please give a shoutout to Namaste JavaScript and help me reach more people. 🙏
Cheers,
Akshay Saini
akshaysaini.in
Would love to Stay Connected with you ❤️
LinkedIn - / akshaymarch7
Instagram - / akshaymarch7
Twitter - / akshaymarch7
Facebook - / akshaymarch7
#NamasteJS #AkshaySaini

[@akshaymarch7]

Next Episode: "Higher Order Functions & Introduction to Functional Programming" - kzbin.info/www/bejne/fpy6qal4Zrd9p5I BTW, How was this video? Let me know in the comments below, I read each and every comment! ❤️

[@RohitKumar-vd6mi]

Thanks for this!

[@priyanshuagarwal2337]

Dude add videos on topics left such as Arrow functions, promises, exports, and also how things work at memory level/execution context in case of multiple files using exports etc. Also It will be great if you can create a web dev course, explaining Angular/React/NodeJS. Thanks man!

[@olahuuber5540]

The way you bow down and say namastey it shows you are uttrakhandi 😂

[@lingrajbiradar4416]

please add promises videos

[@robinsoni4778]

I have one doubt, let's say when global context in the call stack is being resolved which eventually going to take let's say 10 seconds to execute and in the same time there was a fetch call been made, which has the call back function attached to it, and the code in that call back itself going to take 5 seconds, will that callback be resolved only in the call stack (total 10 + 5 seconds to execute code) or it would've already be executed before the time the fetch call back pushed into the call stack, in that case it will take max(10,5) = 10 seconds? Please help with above Akshay.

[@haroonhayat4797]

Akshay Please make video on Promises 🙏

[@sanjeevguglani6623]

Let's highlight this comment untill it reaches to akshay

[@haroonhayat4797]

@@sanjeevguglani6623 👍👍😍

[@snehaagarwal1777]

Even I request this🙏🙏🙏

[@akshaymarch7]

Sure 🙏❤️

[@hiteshbariya384]

Also on async and await :)

[@saurabhchauhan232]

Please do not let this series die here, hoping you are good and healthy.

[@DesignStrong]

Look at videos on our side in meanwhile

[@tautikagrahari489]

@@DesignStrong yep ..this series dead

[@riyazahmedpathan3850]

started new series @@tautikagrahari489

[@jagrutsharma9150]

Things learned: 1. The setTimeout function stores it in the callback queue which is executed only after call stack is empty, even if setTimeout is set to 0ms. 2. setTimeout ensures that minimum it will take the time mentioned because it may be paused due to call stack not empty.

[@shreeharinw]

Before I started watching this series, I was one of those guys who hates JavaScript and here me loving this language by the end of your course. Wish you all the success in your life from the bottom of my heart.

[@yashbansal1038]

Bruh iss not the end

[@valp_co]

I love this comment since I think same

[@tzdtuc-pd9yv]

This passionate guy is a god-sent angel. He manifests not only the beauty of javascript but also his beautiful soul ❣

[@godoftheLTD]

I'm so glad I found a video that explains this concept so well because many of my coworkers get confused about this. Thank you so much for putting this series together! I would love a similar series on how JS bundlers work!

[@revanthrev23]

Hi Akshay! This entire playlist is one of the best things I have ever come across in my life. Such in depth explanation with such clarity is just unreal bhai! Absolutely loved to learn from you. Please take out time from your busy schedule and continue to make videos either for this playlist or maybe make a new playlist for any of the JS frameworks. Learning React from you would make the lives of millions of people. So please give it some thought and make newer videos as and when possible. Thank you for this lovely playlist so far! ❤️

[@vineetpardhi5475]

bro, this knowledge which you have is pure gold for developers, I won't even get this even if I paid for JS courses. thankyou so much.

[@tan7246]

Extremely amazing series. Thank you so much for doing this. Hands down, the best series. Please make more videos. Would love to learn more from you!

[@ritikabhatt2370]

Please complete this series Akshay sir. You are a gem 💎 it's a humble request , we have fallen in love with javascript and now wanted more deeper videos.

[@SACHINRAJPUT-rj3oq]

This namaste-javascript course made me fall in love with JavaScript programming language...... Completed all the videos till now, and eagerly waiting for the next video... Thankyou 🙏

[@syedquadri3922]

Legendary Akshay Bhai. Legendary... All Javascript developers - Experienced or newbies should look at these videos. Clear, crisp to the point - NO nonsense videos. Also, when are the next videos coming out???

[@ramyanh5302]

@Akshay Saini You have the power of changing the mind of watching netflix series on sunday's to watch your beautiful, conentful Namaste javascript series. You are changing lives and you will stay blessed. Kudos

[@neelthakkar4492]

Akshay when the next video is coming? I am really eagerly waiting for it!🤩🤩 Please upload next video 🙏🙏

[@letscodetogether9289]

Just Fall in Love with Java Script .The way you explained was amazing. Even love your dedication to help us by this type of knowledge heavy content

[@sivaganeshakula3492]

Hi Akshay, I love you explanation and deep dive to the topics. I would like to know better on this topics 1) Can you please make a video on performance related, security related, memory leak, when to use let, const and var at their best etc.., 2) On state management 3) Arrays and Objects (Deep and shallow copy) Thanks for sharing knowledge especially on behind the scenes of our code Please like and comment till it reaches Akshay if you are interested to know this topics

[@jaishrikrishna5755]

it will be great to learn all these from akshay

[@PrashantAmoli]

25 seconds into the video and it has been educational💯 and entertaining🔥 at the same time Now this is one of the many reasons I recommend Akshay Sir's🙏 videos to every 🔰JS developer🔥

[@priyankaahire1000]

Thanks. This 10-sec code execution question came in my mind at the time of episode 13. Now I am clear with my doubt.

[@th3ja]

Namaste Javascript has been one of the best resources in my coding journey! Thanks for everything Akshay!

[@naziaakhtar6781]

Your teaching style is very simple and easy to understand. Love your videos. Thank you so much .

[@AbhishekKumar-id2nt]

Wow, learnt too much in single video itself. Thank you.

[@goswamikanika8]

You are teaching JS so well . I have started to fall in love with JS.

[@sheetalpatil9462]

Seriously I am also falling in love with javascript ..by watching your videos ...Thank you for making such great videos. Waiting for promise ..

[@prasoon2510]

Ohh is it... i think most of the dev can’t answer like this.. thank you Akshay.. millions clapping for you..! 🙏😊

[@rashichawla448]

Can you please make a video on what happens behind the scenes in promises? I absolutely love your work and the way you teach, concepts get etched in memory very beautifully. Struggling a lot learning promises, please please make a video soon

[@sanketwarambhe7879]

I rarely comment on any videos but I have to say, this is one of the best js courses out there. Eagerly waiting for the next videos :)

[@sougata2705]

I dont usually subscibe or like yt videos...But this whole playlist was so awsome and well-explained..my hand just clicked the subscibe button..

[@kunalsharma1936]

ye meri responsbilite hai aap ke har ek video pe like or comment karna. you deserve this. thank you so much for This video series❤

[@arunvishwakarma2779]

I have taken notes of all the things you have taught so far and that is a "Grantha" for me. Every time I go through these notes, I see your face as if you are explaining it again. Like in the old bollywood movies, when a person would read a letter, the person's face would appear on the letter :D

[@kazikkluz2881]

Man, you're a hero. Thanks for the great videos and keep up the good work

[@nadipiswetha]

Absolutely beautiful series. The time that we set in the setTime out is the "MIN" wait time. ❤

[@aayushthakur6159]

sir will this series continue? Many important topics are left like promises, I'm in love with your way of teaching, belive me today i had my oncampus interview in which all those questions which were asked from javascript was covered by you. Sir it's my humble request to please don't drop this series because it may help many people like us to get a good job only because of you . people like you are rare Thank you so much in advance akshay sir❤

[@manishankar1779]

Love your energy and enthusiasm while teaching . Keep it up

[@rajnikantsethiya5135]

Unbelievable facts told by Akshay with the help of this series, MUST WATCH :)

[@abhishekvishwakarma9045]

19:12 A clear example I noticed when we used defer in our tag during including in our html (Inside head tag) -> Sometimes we want that -> 🤔okkk this script should be called after the file (or page) parsed completely -> then defer attribute is helpful. great deep dive explanation🔥🔥 (Watched very late 😁😅) And also thanks for the NamasteDev🤩👌

[@SiddharthSingh-yf1jl]

Sir please make a dedicated video on objects. I confused alot in objects. And you are such a god of js , I just love to watch your series. THANK YOU❤️😊

[@gokuljayaraman9080]

In mobile environment we will be using this in splash/welcome screen. Its really important to know about this clearly. Today I got clear understanding, thank you Akshay !!😀😍

[@zehrxsyed]

Completed the series in 2 days. Totally in love with the way you teach.. eagerly waiting for the forthcoming ones...much thanks to you sir.

[@globalclutter9508]

2 days are enough to get familiar with js? Please tell me as I'm learning Java, I don't want to get mixed up

[@sushantgarudkar211]

@@globalclutter9508 Seriously not! 2 days for a person who knows already how to code in js and have little experience working with it just a begineer level is enough. For freshies this is not the thing! just you have to understand basic concepts do some coding basic scripting and you can follow with it

[@jp-rb1oi]

I have loved C++ for a long time because of DSA but now also love Js....❤️

[@manikumar1662]

Getting clear picture of concepts after watching your vedios..Thanks a lot

[@susmitobhattacharyya1668]

Love you JavaScript and thanks again Akshay for making me fall in love with Javascript.

[@nikhildr4441]

Hi Akshay, just finished this video the Quality of content and knowlegde you are sharing is priceless. at one point you said that time is Jan 16th and 10.37 in the night, It shows how dedicated you are to bring out these videos. Thanks for these Videos, we need more people like you to share their knowledge and experiences open to the world. It'll help a lot for many people like me who are just starting out in this field. Ps: I'm the kind of person who doesn't comment on youtube videos, when you are taking hours of your Quality time making content, taking time to comment out my views is nothing. [Waiting for upcoming videos]

[@akshaymarch7]

❤️

[@ludovicmanga8241]

Brother your videos are so helpful ! I am about to buy your react formation just to support you for the amazing content. Lot of love from France 🥰

[@sudarshankalebere5526]

This is more heartbreaking for me to see since last one month there is no video from you bro 🥺 Please upload more n cover all concepts. Also bro please start "Namaste Angular" 🙏

[@shreyanshrathi409]

Loving the way you explained each and every thing. You are light i am looking. SUPERHERO 🤩🤩🤩🤩

[@meghakg6283]

Hi, Akshay! Hope you're well. Every video of yours is sooo informative and I thoroughly enjoyed each of them, it seems like a friend is explaining me something and that makes learning so much fun. Thanks a lot, Sir. 🙏I really hope you continue making more videos.

[@seethalramakrishnan2778]

Thank you Akshay, it's been an amazing experience. Loved the whole series and waiting for next video. Come back soon

[@anchalgupta996]

Eagerly waiting for next video. I am in love with these Javascript tutorial. Please upload next video soon. No one can explained these things better than you.

[@mind2digital116]

Akshay you are elevating humanity consciousness with these videos, thank you 💪💪

[@aamirjamal6833]

Awesome! Thanks for the knowledge. And thanks for keeping only one advertisement that too in the end. 🙏

[@Mauryarohit1]

We in our organization use ngPrime for complex json data to bind to a datatable. We also implemented lazy loading. A major issue was that, whenever a user clicked on sort or scrolled down in data table, both sort() and lazyLoad() function was called and both was executed. To solve this problem we put a setTimeout() inside lazyLoad() and used a variable to see if the request came from sort() or lazyLoad(). The point is we used 100ms delay in setTimeout().Now I know that I can also use 0ms in this case which will 100ms faster!!!. Thanks for the tip. You're awesome. ❤️

[@madhavendrapratapsingh7272]

Jai Hind Sir, You are simply AWESOME. Now my main language is JavaScript. I just want to work on it throughout my life. Thank you so much, sir, I have a request just to put that series in an infinite loop so that videos of this series never end..so please sir just keep adding videos on this series. This is a very humble request. Thank You!

[@rajwardhanshinde7009]

hello bro i have some doubts regarding js plz how can i contact you plz help 🙏🏻🙏🏻🙏🏻 i am in need

[@aryangrover7216]

Please make more videos, We all are just loving your series, Please make a lot of videos on advance concepts.

[@tridiplodh7568]

Sir your playlist helps me a lot to understand the JS in depth, and it is an honor sir i got your video and enhanced my js knowledge a lot. I have one more request, can you upload playlist for REACT JS as well.

[@TheBrisker]

Sir please we need more namaste javascript videos .🙏🏼

[@luckshaeey]

The video was beautiful sir ❤ have understood a lot of java script concepts. Will try applying them in my projects too. Thank you

[@AshishKumar-bf4cc]

Crystal clear sir i love the way you are teaching thank you so much sir.

[@adityasharma3927]

Totally loved this series, waiting for the next video.....

[@divyabhargavi3365]

Hi Akshay, just loving your videos and especially the way you explain the concepts. I would really expecting the videos on design patterns of JavaScript. Could you please focus on that as well? Thank you.

[@ShaileshSingh-hb6gh]

Now i can see how my knowledge growing like tree day by day after watching your video .

[@avijitbiswas1017]

Hi Akshay ! It's been a long time I saw any latest video of yours. Hope you will bring some good news soon. I just wanna share that I have landed my first Full stack job. Prepared for last 1.5 year. I am really thankful to you for making my javascript foundation very very strong. I feel I am much knowledgeable person in company when it comes to Javascript ,all credit goes to you.

[@Rachana453]

With your Video I really love javascript now. Please make more videos on useful concepts.

[@dhruvilkumar3577]

You are right we fall in love with javascript you are explaining osam

[@snehi56]

Nice explanation..I have followed all your videos so was getting the feeling for 50% time that I already knew this.. Nice revision Did the server extension setup..ready for ur next video..

[@mysticresearcher7564]

Thanks for making these videos, I watched all 20 videos in 2 sittings. please make a video on debugging and how to apply all types of breakpoints?

[@anupammanitripathi2731]

Theme music and chann se jo tuta koi sapna music😅 is awesome along with whole content. Thanks alot.

[@darshang7133]

Hey bro seriously I became a big fan of your videos. love you for this content.

[@tusharkulange4029]

Yes I fall in love with JavaScript 🥰🥰

[@inevitable5901]

Boom!!!! Now i understood why the API performance is bad when we have timeout events(schedule jobs).

[@soumilkhandelwal4388]

Hi Akshay, please make a video upon promises or async and await. Thanks for all your amazing contribution to the JS lovers/developers till now man

[@bilalahmad3398]

Wow! salute to you sir, I've got answer to my question which I had asked in previous video. I was really not getting an easy answer to that question but I got it from you now.

[@harshprajapati3230]

Broooo, love this namaste javascript series

[@arpitghai7592]

Hi Akshay Saini, As i am a mechanical graduate, yours namaste JavaScript series helped me a lot not only in understanding JavaScript basics but I've also started liking my job as a MEAN Stack developer. Please make a video on Redux & ngrx store as well. if possible as these topics are very hard to understand.

[@ridhimandhariwal1418]

Thank You, Akshay for making this course so interesting

[@ganeshpatil6020]

Thanks a lot, bro. may you get everything you want in your life.

[@shourabhkumarraja1371]

guruji, waiting for the next video ....I have watched all your videos of this playlist, it feels like I am watching the web series, it's awesome !!

[@meghajain9299]

I love the music in the end.. Literally dancing sometimes to celebrate learning :) :D

[@sarveshshirude9225]

Thank you Akshay Sir for the bonus video.

[@nikitakumawat6365]

Now, the things are crystal clear.

[@WaqasKhanDurrani]

Mind Blowing Concepts!

[@snehaagarwal1777]

Thanks for all the amazing videos ❣️

[@sameersahu4569]

Beautifully Explained as always Thank you!!Understood!!

[@prakashbtw678]

Wow!! Good content. Have been waiting for this. Thanks bro..

[@rashmidavande4699]

you know what you are awesome, the way you explain very easy, thanks bro 🙏

[@dharmik5442]

You are doing a really excellent work. I just love your work. Thank you akshay sir

[@bottlemaaji9193]

I recently see your video. Within 2 days I watched it all. I hardly see the technical entertainers like you. It'll be really nice if you upload videos daily 😉

[@shahNanigan]

Your passion for Javascript makes me more interested in it tbh!

[@shaleenkachhara6206]

I had used setTimeout with 0ms delay some time back as I wanted to defer the execution of a function, originally started with 1s delay and kept reducing it till I finally settled on 0. I wondered that time how did it work but never bothered to get into details as I was content that it worked 😅

[@vitalvisions4U]

After watching this series I got a whole new perspective of looking at my code. Thank you Akshay.

[@purusharma8192]

why to write settimeout before console.log("end") in case of 0 second timeout ,can't we write normal function after console.log("end")

[@ajinkya4658]

@@purusharma8192 yes you can do that but what akshay is trying to do here is using async function and also he had to explain settimeout function

[@shikharbansal2942]

Please complete this series bro!!

[@akshaypawar4800]

Heyy akshay I like the way u say WOW it brings positivity(means how cool and easier javascript is) in me...

[@ishraqsyed8999]

Keep going buddy. Your efforts are sincere and it shows in the videos. Plus you are conceptually sound as well. Not sure how comfortable you are in angular and rxjs but would be great if you could touch upon some core concepts like : Observables, AOT vs JIT, angular Change detection strategies, View encapsulation, Cold vs hot observables, Subject and behavioral subject, Rxjs operators, Injection tokens etc

[@aromal_anil]

Learned something new today 😍. Thanks you Akshay 🙏

[@codewithabhishek1676]

Awesome video , how much you have creativity think about each logic

[@rumpamala7670]

loved your way of teaching . Thank you for your efforts :)

[@arunvishwakarma2779]

The very first video of this series, Akshay you said that it is your goal to "Make us fall in love with Javascript", I thought in my mind "That's what she said" ;). However, a very big bow to you, I am actually in love with Javascript now. Now I know what I am writing and how it will impact the performance. I sincerely request you to upload next video.

[@shauryamalik7233]

watching this video exactly after 3 years, Jan 16 2024 and it still makes sense !!

[@ramila4100]

Bhai...let me tell you I never comment on video usually... But your videos are soo awesome it force me to do it ...this by far one of the best series on JavaScript

[@RushabhWadkar]

Waiting for Akshay's next video is similar to "Starvation of callback queue" concept where your next video is sitting idle inside callback queue but is not getting published because of the microtask queue! :( Please upload it man!

[@DesignStrong]

Look at our videos in meanwhile