whenever I have doubts in JavaScript , I think of techsith 😉

No one has explained Hoisting, let alone the reasons for hoisting in such a lucid manner !

Very nice video. Finally understood the issues of using var and the advantage of using ECMAScript 6 'let' keyword instead. Thank you very much!

Thanks for the video. The best information I got from this video is that let is block scope. That goes a long way towards knowing how to use it and how it is different from var which is function scoped etc

Wow, hilarious. When you brought up the thing about the interview. Had one today, they asked me about hoisting, and i didn't do so great, and now I'm here

The best explanation in all the tutorials video. not found better than your explain.keep posting, keep sharing .

I really appreciate it because it is more clear than all video i get over the internet and please show us a complete video course about zero to advance level. thanks

Mozilla needs to hire you to simplify their documentation! Thank you very much!

I like your style of explaining the issues - respect ! Thank you !!!

Your unbelievable man.... Straight up unbelievable. God has blessed us with hell of a JS Guru. I wont take this blessing for granted. Unbelievable should be your nickname brotha. Keep up the amazing work.

You are very good teacher, explained with examples. I have learned lot of things from your tutorials.

techsith is simply best for javascipt :)

I really love the way you explain the most confusing concepts in js...Feels like you have the right choice of words that trigger my brain to understand..lol. I will make sure to follow your vids regularly. Keep posting cheers!!!!

You are a great teacher , i have doubts even after watching other JS tutorial, as they teach the syntax only, not clarifying the doubts why we use any particular syntax what it does. #Love and Respect to you from INDIA.

Thanks for making ours life tremendously easy.I have been watching all of your's tutorials and you have a great teacher in you.Keep it up.It would be great if you come up with some DS/Algo tutorial as well.

Best clarification of let and const keywords, i have seen so far. Thanks Sir :)

i really appreciate your work....and your teaching skill are awesome....simple and easy to learn by you.....................thank you so much..........

Excellent..simple and straightforward..

I really enjoyed the video and understood all the concepts related hoisting and issues of constants

Thanks for your simple explanation, this really means you understand what you're talking about, keep going (Y).

your tutorials are art int itself

Thnaks Respected Sir 🤗 Lot of Love from PAK

Mr T Sith, so clear, so useful, so thank you!

It was very helpful sir ....... explanation was clear and perfect....

Awesome example with simple explanation and presentation

felt happy after seeing the video, doubt cleared

Great explanations, your video made hoisting much easier to understand:)

Really a great tutorial , I have ever seen.

thank you for covering this, its really clear out everything i want to know. So near the end of the video when you declare the var y = 2 outside the function expression even though inside the function it already had the console.log for y before we initialize the y with 1 so thats when the hoisting kicked in rather than the lexicial scope rule where every outer environment can be accessed inside function so in this case the hoisting just declare the variable y and not initialize any value for the variable y so in this case undefined. So far i think javascript is the only language that one declare a variable in a global scope you can literally use it almost any where, javascript function is also an object itself. It would be nice to see you explain about the scope chain and closure🤔🤔But keep up the good work bro

Best simple n most understandable concept .....

Best in business , fantastic to say the least▶️

awesome video sir....just one advice i want to give you please put this video in top of this playlist...as i started watching your playlist and in above videos you have used "let" then for finding difference between var and let takes a lot of time...but after watching this video i get completely understand the difference between these two...once again thank you so much...waiting for more videos :)

Who... Who... Would dislike this great video XD... The condition could be they didn't want to learn anything XD .... Great explanation as always!

Your videos are so informative keep uploading new videos

very nicely defined, pls keep on doing advanced JS topics incl arrow fn etc.

It's amazing, The way of representation is awesome.

this is the best video on that subject. i think you should do some udemy curses so you will se some money of your work!

Super Clear! Thank you!

Very clear and intelligent explanation! Thank you! 💡 👍🏻

Well explain so easy to understand, thank you so much

Simple and perfect explanation. Thanks Sir.

great explanation about the scopes. Thanks

Best explanation.

Thank you. This video has been really helpful. I learnt new things......

the best place to look things

It's during the execution context, the JS engine will store all variable and function declarations in memory. Every function creates its own execution context and memory bank. That's why you can call/evoke a function before it is defined, because that declaration has already been stored. ;-)

Effective Vedio for learning ✅

Great work... keep it up 💪😄😃

you are good resource to learn js

Great video buddy, cleared my doubts.

Thanks for this tutorial! You did a great job!

Excellent Video. Keep up the good job

Your videos are Vader Level!

Interviewer : do u watch techsith Me: yes Interviewer : you are hired

Superb !!! Please do some videos on JavaScript common patterns

Nice explanation..keep doing the good work

so simple and informative ❤👍🏻 thank you

Thanks for the video. Is var still used often? Or is everyone using let and const now?

That was clean sir. Thank you

whenever create any variable with var keyword it will be added to window (dom) object directly so it will be available in that particular context var is like global variable. var v; console.log(window.v);-->u will get undefined not an error

Thanks for the video. Can I know the difference between lexical scoping and function Closures?

Great explanation. Thank you!

Awesome channel!

Another thing with var and let is: var x = x; gives you a variable x with the value of undefined but let x = x gives you Uncaught ReferenceError: Cannot access 'x' before initialization at whateveryourfileis.js:whateverthelinenumberis:whateverthecolumnnumberis

Thank you Sir for clearing concepts !!

This was so clear and helpful! Thank you!!!

Best tutorial! Thanks

Very helpful tutorial....

Very nice video.

This helped me understand hoisting thanks alot :)

Can you please explain the second part where you assign 2 to var y and then if you comment out the other assignment to the same variable the console.log would display 2.

great explanation, thank you.

Ur the best

nice video it's really helping to me thanks sir , have you done any video on design patterns in javascript sir?

Merci beaucoup. C'était très clair :)

Uhm. Are they really garbage collected? How does function factories work then? doesn't function factories return a reference of an object that was created inside the factory?

Awesome tutorials...

clear example. thanks

I think 'let' do hoisting but it doesn't assign to default value undefined. it assign where the developer declared. I might be wrong though

Well explained, thank you. Is there ever a usecase where you would rather use var instead of let?

You're amazing .. thank you

Thanks great tutorial

good one

Yep this was in my interview today lol.

Great Video.

nice Explanation

Nailed it

Great Video. Thanks 😊

I understand hoisting. But I want to know why hoisting? Could you please help to understand.

ДЯКУЮ!!! It is "Thank you" in Ukrainian!

can someone explain the interview question ? why is y not 2 ? because of hoisting ??

Good one, thanks

Awesome!

Thank you.

Thank you so much!

Thanks!

Really help me :) Thank you

hey..@techsith what are uses of varaible hoasiting ..

eventhough variable a is inside function but it's woking outside function also please check this code var x=function() { var a=10; } alert(a); x();

thank you