Closures in JavaScript | Inside a loop, inner function and setTimeoout

[@kensleylewis]

This is the first visual example of showing how let is different from var. Thanks for sharing this!

[@Techsithtube]

Glad it was helpful!

[@ravikumaryazali2529]

I can proudly say that watching your JavaScript videos changed my knowledge level from beginner to medium, I know JS is like an ocean. Waiting on more n more videos from you. Thanking you is not just enough though

[@Techsithtube]

Great to hear! I will keep putting more such videos.

[@mptakable]

Thanks man for explaining a setTimeout inside for a loop with a var. It's priceless 👌🏻

[@timfrailey1492]

Have read tons of closure examples and tutorials and I feel like have had a good understanding of them, but no one really broke it down in the way you did with each loop iteration. That is really the key to understanding why things are happening as they are. Great tutorial -- all of your videos are awesome

[@Techsithtube]

Tim, I am glad that you leaned from it. Thanks for watching

[@cooldezign]

Your explanation is crystal clear !!!

[@rick_from_yr]

Seriously, the best tutorial I've ever seen about closures :D

[@abhilashvadnala5865]

I felt Akshay Saini's closure video is the best

[@zt.5677]

I saw your Javascript Closure tutorial ( Closures Explained ) from 2015 as well. Both of them are very good. Thank you for keeping both of them.

[@flyingbirds4235]

I started learning JS because of techsith.

[@Techsithtube]

I am glad you did. Thanks for watching!

[@phalguniroy3351]

@@Techsithtube me too. JavaScript seems very much clear after your videos.

[@shivGGG]

You are amazing, Guru

[@achyutrastogi8080]

Awesome, it's not the most complete video, but it explains a lot that most closure videos don't. Good job.

[@kshitizshah6685]

He has got guts and confidence , Salute !

[@Techsithtube]

Kshitiz, thanks for an awesome comment!

[@murrayKorir]

OmG this man is the man... I was using for loop with multiple queries inside it and several other callbacks, then at the end I had put a condition to check that the loop had finished, then finalize with a last update query..so the loop always ended before even the queries had finished processing what ta ef man!! it drove me crazy for days checked on stack overflow for solutions but those solutions were just too thick to understand so I found techsith, he explains it very well and made it look so easy. Thanks a lot of this. subscribed, liked and shared. The example with setTimeout() was a mind opener I was able to see the entire code universe, everything now made sense. wonderful work.

[@Techsithtube]

Carlos, I am glad that you finally got it. Please check it out my video on async await, that can be very useful. Thanks for watching!

[@scbu92]

I was always confused by the setTimeout with closures. Thank you for finally clearing that up for me!

[@Techsithtube]

I am glad you got it. Thanks for watching!

[@momithachoubey786]

@@Techsithtube hello.... Can u really provide ur JavaScript tutorial to us, full course??? PLEASE...🙏🙏🙏 BTW LEMME TELL U I AM A BIG FAN OF URS... PLEASE PROVIDE ME UR CLASS DETAILS, REALLY WANNA LEARN FROM YOU SIR

[@savitrimhatre2636]

This is the best tutorial ever I have came acrossed to learn Closure, difference between using var and let . I was really looking out for the explanation to the problem which you explained in the later part of the video. Thank you so much for the best explanation.

[@shadymohammed3197]

Every time I watch this video I'd like to like it again! You're an awesome teacher!

[@MrBulciu]

Woah, nice tutorial! I just found your channel and it is amazing. I didn't even feel those 16 minutes pass while watching. Thanks for making top notch content!

[@Techsithtube]

I am glad that you learn something . Thanks for watching!

[@prakashbalaji2336]

Thanks a lot...man you cleared the my all the doubts about closures

[@Techsithtube]

Glad to hear that

[@bhanupartapsingh3166]

bro love love love love u ... it took me time to understand closure loop but end of day ... it is deep understanding knowledge and I am beginner so it's so useful for me .... liked shared ...already subscribed

[@Techsithtube]

I am glad that you got it in the end. Keep learning! Thanks for subscribing!

[@henokgebremedhn1802]

Best tutorial about closures by far, Thank you.

[@muneerahmad1428]

i liked it before watching it even before you said to "like it before watching it", as i have watched few JS tutorials on your channel in last few hours ,, cant resist clicking the "Like" button and yeah i am a subscriber now,,, Thank you so much for your efforts, #RespectForYou

[@zakiahmed3198]

your videos are such incredible js tutorial i have ever seen in youtube

[@Techsithtube]

Glad you like them! Thank for watching!

[@Karan60191]

wow that var and let concept for closures gave me goosebumps, well done Mr. Patel :)

[@sagarshekhar6296]

I am new to Advanced JS....and I liked this video....Thanks

[@Techsithtube]

Thanks for a comment Sagar. :)

[@xxdreadsaintxx]

Mind blown! Never would have thought to look at it that way

[@Techsithtube]

:) Thanks for watching Justin.

[@ankitapagaria8610]

I've seen so many definitions for closures but never really understood it. This video cleared a lot of doubts for me. Thank you!

[@Techsithtube]

Glad it was helpful!

[@coplepk04]

Great explanation of closures

[@priteshm6823]

your videos make learning super easy. Thanks man

[@suprajakoppisetty8231]

Awesome, I have been struggling to understand many concepts and your tutorials are life savers! :D

[@Techsithtube]

I am glad that they helped you . Thanks for watching!

[@daliborkozar870]

I advanced in JS and working in react and I just forget things, this is a great refresher

[@Techsithtube]

I am glad that you think so . Keep on learning!

[@cancanjaker1620]

Very good explanation of closure from a new perspective.

[@sahityavemparala2099]

excellent closure explanation...

[@murugesansubban]

You are a good teacher.. I learnt a lot from you.. thanks

[@Techsithtube]

Thank you for an awesome comment Murugesan.

[@ravimane5508]

I am following techsith from last 2 years. Please make a tutorial series and add more videos on Javascript.

[@aishwersharma8130]

Thanks.Your effort deserves a bigggg like.

[@prasadambaledath7699]

Wow , what an explanation about 'Closures' ! clear and precise !! Thanks a lot techsith !

[@saurabhjarande5585]

Thank you Sir. You explanation and topics r very nice. It actually helps.

[@ravindrakumarambati9194]

I like the way u explained . Thanks

[@Techsithtube]

Thanks for liking

[@upendrakumarpandit5340]

thanks , you realy keeps your words whatever you said at the begining of lecture.

[@diwakarnrp2092]

Your explanation is super sir

[@himanshusharma3157]

First half summary: "closure is a function which remembers its dependencies, so that it can be used outside of containing function." pretty simple... Second half summary (after for loop): it was about difference between var and let keywords. good example to explain scopes. but i din't understand how is related to closures. please explain that.

[@satlibwanzai111]

It demonstrates how the results of closure are changed by block-scope and function-scope.

[@ExtraordinaryAF]

You are right. He used closure to show the difference between var and let. var uses functional scope, so the variable 'i' in the closure of the set timeout function keeps getting updated (its the way var works). Let uses block scope, so the variable 'i' in the closure of the set timeout function does not get updated.

[@theskydeath]

If you look closely, the settimeout function executes a callback at later point in time. And by later point means when the outer function has been already executed and it's variable, i, is not present in the lexical scope, But even then callback can access, value of i and that's the magic of closure.

[@MinecraftN3rd]

with the var keyword in the set Timeout function, the function always updates to the new value of i. Each of the setTimeout functions update to the new value of i after the for loop is finished, because the I in the setTimeout has function scope, which means the variable is visible only inside the function. Where as with "Let" a new variable is used for each of the SetTimeout functions, so the I isnt updated to 3 at the end like all the others. Think of the run time of the for loop is much less than the setTimeout function.

[@milindkhadse556]

Very helpful tutorial I don't know this differences. Thank you

[@AddictedToCode387]

probably the best video about this theme i have found so far, extra , perfect :)

[@yanchuntang7750]

great, best js tutorial ever seen

[@lukehatcher98]

I loved the looping var vs let example

[@shohruxdavronbekovich8267]

Great explanation!!! Thank you for your help!!!

[@joesmi8638]

This is a super good explanation. Thx.

[@mmmmmmm8706]

That's the best video thumbnail I've seen on KZbin! One of the best on closures too.

[@Techsithtube]

Thanks you . I put lot of thought in each thumbnail .

[@purvasawant6169]

This couldn't be a coincidence that I already liked your video before watching it completely. Time of the video 1:17 seconds, video liked. I wish there was a super like button.

[@bharatchirumamilla2528]

A True Knowledge you share

[@avdbzben]

You were absolutely right... It was very good

[@subhashvishwakarma5203]

Really awesome ....big thanks to you for such videos

[@reynandelizo1480]

I liked your video your teaching is good and also worth it.

[@ramdhenudhunia1507]

Well explained sir, hats off to you

[@mysticaltech]

A true JS expert! Thank you.

[@Techsithtube]

Glad it was helpful!

[@sujanmahmud9168]

Thank you, all of your videos are really good and better descriptive.

[@alexbauer1193]

I loved your video. You're doing a great job.

[@dorlinogullari]

Inspecting the new function with a console.dir was the key to understanding this. Basically the lexical environment of a function is stored within that function

[@dhimanchakraborty5639]

The best tutorial I have seen ever.

[@shourabhkumarraja1371]

love you sir!!.. you are awesome 🙏

[@Techsithtube]

Thanks for watching Shourabh!

[@kaushalpatel2284]

Nice explanation 🙏

[@deeproy7292]

you blew my mind with that example...thank you!

[@LtKeyser]

In any of your tutos I learn some great trick. This console.dir thing is sweet. I'm still learning so I only know that much. Still I haven't seen it anywhere else and I've been doing quite a lot of reading and viewing these days. Good for you.

[@bhanubaghel3012]

every time whenever i see your videos something new is must in your videos what i don't know it's a real tech chennal

[@shibnathroy106]

Thank you for making such high-quality content available to us for *free* .

[@priyankapardeshi6505]

Good explanation. Thanks

[@SumitJaiswalIndore]

Great explanation by @ techsith . thanks you for save our time.

[@rajabhadariprasadvideos1996]

the video is so useful to me thank you sir

[@cmoney1928]

Best explanation of this concept I have seen. I always do this but never understood why it worked.

[@akshatbhatt4022]

I liked before watching the video.

[@Techsithtube]

Thanks Akshat for watching

[@anonymous.youtuber]

Finally I understand this. Thank you so much ! 🙏🏻

[@Techsithtube]

Glad it helped!

[@Gwith126]

Wow, great video and released on my birthday!

[@Techsithtube]

Happy Belated Birthday! :)

[@ruchirai5775]

Techsith- Genius , thanks for this video

[@narsingyadav667]

very good teacher, the way you try to explain is awesome

[@asitgupta4299]

Please you be in good mood and keep uploading useful tutorial for us..Well explained ..thnks Sir :)

[@climbers1376]

7:03 block function 7:39 closures only show used variables within specified block function (shown via console.dir) 8:13 articulating closure

[@Techsithtube]

Thanks for the timeline.

[@chapriprogrammer7838]

Sir you are great😊

[@MultiHeywatsup]

on 12:42, you mentioned we get a brand new 'i'. If thats the case, how does it remember its previous value to increment itself

[@j.leonardomora2189]

Thank you so very much, always had a bad time with closures

[@Techsithtube]

Happy to help! Thanks for watching!

[@jabezsamson]

Your explanation is just out of this world! Thanks, man! You helped me a lot!

[@Sleepytj007]

Thank you for the lessons

[@emilewamsteker3412]

Hey Techsith, Thanks for taking the time do this video. This is a great explanation.

[@Techsithtube]

I am glad that it helped. Thanks for watching Emile.

[@Street_Food_Adventuress]

You are absolutely right, I get an interview last week with a closure inside a loop question hahaha

[@kmylodarkstar2253]

Amazing dude. Really thanks, it's so important to learn by theory, examples and then challenges

[@Techsithtube]

Glad you think so! Fundamentals would take you far.

[@peoples_amazing_life]

keep it up, sir. just now I have subscribed to your channel.

[@AhmedMohammed-gy7mt]

What an awesome tutorial I started love JS because of techsith

[@Techsithtube]

I am glad to have inspired you . Keep learning!

[@sanketburde2025]

Very Good explanation..

[@sivahari97]

For loop - Nice example bro...

[@ammujosephshajan2460]

Super cool and i really loved it

[@vivekpadelkar5624]

great video ...keep working ..............

[@Techsithtube]

Thank you, I will

[@shikharchaudhary6984]

Amazing explanation.

[@deejaydev]

Thanks for the vital info

[@Techsithtube]

Thanks for watching Danjuma,

[@TechAahar]

Great explanation with clear situations, thank you for sharing with us.

[@ramya23041987]

Very nice 👍 video.

[@vivekvanga3588]

Well explained sir... Thank you

[@sunsneez]

Love your videos!! They are so helpful. Thank you.

[@Techsithtube]

thanks for watching Lexi. Keep on learning!

[@christianteller661]

Great examples, thanks for your time!

[@VishnuvardanRS]

I am really glad, I found your channel!

[@Techsithtube]

Thanks for watching Vishnuvardan!

[@alvaroprietovideos]

Good video! Thanks for sharing

[@NihilismEnjoyer98]

m********r makes it sound so easy!!! XD didn't get the immediately invoked function part at the end but, i'll just dig into it. Thanks for great explanation

[@Techsithtube]

:) Akshay, I am glad that you got some of the concepts. Keep on learning. I also have a video on immediately invoked function expression. do check it out.

[@NihilismEnjoyer98]

@@Techsithtube sure thing. Thanks.

[@manendra19]

Great explanation of this problem.