JavaScript code execution | Hoisting |Execution Context| JavaScript Interview series in Hindi

Please consume this content on nados.pepcoding.com for a richer experience. It is necessary to solve the questions while watching videos, nados.pepcoding.com enables that.
NADOS also enables doubt support, career opportunities and contests besides free of charge content for learning. Time Stamps
0:00 Introduction
1:12 execution context
5:44 global context
11:00 answers of the questions
For a better experience and more exercises, VISIT: www.pepcoding.com/resources
Hello Everyone,
I will be talking about how code runs inside a JavaScript Engine,
I will majorly covering three important concepts that are frequently asked in interviews.
* What is execution context in JS
* What is Hoisting
I will also be covering two interview question around hoisting that in generally asked in interview
Playlist Link: • Complete Web Developme...
Have a look at our result: www.pepcoding.com/placements
Follow us on our FB page: / pepcoding
Follow us on Instagram: / pepcoding
Follow us on LinkedIn: / pepcoding-education
Join our telegram group : t.me/pepcoding

[@Pepcoding]

Playlist Link: kzbin.info/aero/PL-Jc9J83PIiEeD3I4VXETPDmzJ3Z1rWb4

[@klmehtaclass8th236]

error because The code execution will break because with function initialization, the variable will be hoisted as a variable, not as function. So with variable hoisting, memory allocation will happen with the initialization with undefined. That's the reason we will get the error:

[@prateekbansal2014]

last vale question me mja agya .... proper concept clear hogya osko solve krne se

[@harshitsharma5647]

From Today I started watching this series it is very useful Sir. Thankyou for making this series. Answer: varName undefined varName undefined varName Captain America Hello from fn Hello from fn error I am an expression

[@ashutoshranjan4644]

Answer to question given at the end: It will result in error. Since function is declare as variable which is initialised to undefined before it's code execution.

[@shivanshgupta1509]

Thankyou Pep!!

[@thelootmachine9257]

Understood the entire execution flow and finished the assignment

[@Pepcoding]

Keep going. And for better experience, visit nados.io, where you will get well curated content and career opportunities.

[@rajaryan5884]

THANK YOU SIR MAZA AA RAHA HAI ROZ AAYE BAS VIDEOS AISEN HI

[@Pepcoding]

web dev course has been resumed....latest video is coming at 8:00 PM Today Video Link: kzbin.info/www/bejne/Y2rPaXZ4gLmrbNE

[@vanshika8073]

Thankyou sir 🙏 Answer:- varName undefined varName undefined varName Captain America Hello from fn Hello from fn error (if we remove error) I am an expression is printed at last.

[@sahiljain2524]

Yeah same 👍

[@shubamgoswami]

Last m error kyu tha plzz explain

[@omyerawar7976]

@@shubamgoswami because that second function is a function expression and not a function declaration. In hoisting only variable declarations and function declarations are moved at the top of our code and since the second function is not a function declaration it is not moved to top, so now its like you are trying to call a function which does not exist. This is the reason it will give error. Hope you got the point :)

[@klmehtaclass8th236]

error because The code execution will break because with function initialization, the variable will be hoisted as a variable, not as function. So with variable hoisting, memory allocation will happen with the initialization with undefined. That's the reason we will get the error: please like so that many people can see why it cause error

[@ritikkaushik3493]

expression se pehle wale mein call mein error aayegi ki yeh function nhi hai. but agar console.log(fncontainer); yeh karta hoon toh undefined aata hai.

[@pranavp9123]

Real game changer is back 💯😅 Badiya video

[@Pepcoding]

Keep learning, Keep growing and keep loving Pepcoding!😊

[@shubhampokhriyal8491]

Great

[@rohansharma4844]

Thanku very much for clear and concise explanation of the topic.

[@Pepcoding]

I am glad you liked it. I also hope that you are watching till end and trying to understand the what, how and especially why of the problem. If you like our efforts, we request a review g.page/Pepcoding/review?rc You can subscribe to our channel here kzbin.infoabout?view_as=subscriber

[@rohansharma4844]

@@Pepcoding already subscribed. And please keep making these videos and include interview based examples.

[@nishantbharwani852]

Amazing Video!!

[@Pepcoding]

web dev course has been resumed....latest video is coming at 8:00 PM Today Video Link: kzbin.info/www/bejne/Y2rPaXZ4gLmrbNE

[@kmane8593]

y r the great

[@harshsingh5834]

thank u bhaiya ❤

[@himanshugupta8937]

Is month k end tak js kra dijiye project k saath❤️

[@Pepcoding]

Pakka done bro

[@girishpandey2936]

Nice Tutorials

[@Pepcoding]

Glad you like them! For better experience and precisely arranged content you can visit on nados.io

[@aadya1944]

sir it helps lot

[@Pepcoding]

Glad you liked it! Keep learning. And for better experience, visit nados.io, where you will get well curated content and career opportunities.

[@somith16]

Awsome

[@Pepcoding]

Thankyou I am glad you liked it. I hope that you are watching till the end and trying to understand what, how, and especially why of the problem. If you like our efforts, will you like to write a few words about us here (www.quora.com/What-are-the-good-websites-to-learn-data-structures-and-algorithms )

[@shivamkumarpathak3640]

Thanku bhaiya🙏

[@Pepcoding]

Beta flow me aa chuke hai roz aayengi videos

[@shivamkumarpathak3640]

@@Pepcoding thanku bhaiya thanku very much

[@rajmaurya1605]

@@Pepcoding thanks 🙏

[@abhinavverma1603]

Thanks

[@Pepcoding]

Welcome

[@vikaschaudhary6641]

Web development ka jo paid content h and jo ye KZbin p web dev ki series aa rhi h ,kya ye dono same h content wise?

[@Pepcoding]

Yes

[@imperativeinversion7534]

Sir next project konsa aayega agr aap thoda spoiler dena chaho toh 👉👈🙂

[@Pepcoding]

Aise kaise. Trailer hi bna ke denge iska

[@imperativeinversion7534]

@@Pepcoding Ohk Sir eagerly waiting 😅

[@Pepcoding]

web dev course has been resumed....latest video is coming at 8:00 PM Today Video Link: kzbin.info/www/bejne/Y2rPaXZ4gLmrbNE

[@imperativeinversion7534]

@@Pepcoding 🙌🙌🔥

[@baniyaindia]

var fncontainer not clear pls help

[@Pepcoding]

we are going to upload 3 lakh+ videos on our platform nados.pepcoding.com You will find better experience and precisely arranged content. You can also share your feedbacks and ask your query on NADOS's community tab. And for more updates keep following us on Instagram instagram.com/pepcoding/

[@purnachandramansingh3604]

Before Lecture: 1. You both are wasted 😂😂 2. 😳 No I am the real one After Lecture: 1. You both are wasted 😂😂 2. You both are wasted 😂😂 Last Question --------------------- varName undefined varName undefined varName Captain America Hello from fn Hello from fn //Maybe error I am an Expression

[@Pepcoding]

There will be error not may be 😅😅

[@748saurabhkumar4]

undefined undefined Captain America Hello from fn Hello from fn undefined I am an Expression

[@748saurabhkumar4]

@@nm_nishant ok bhai, thanks😊

[@ParthPatel-vj2zv]

Yes. At line 11, code execution will halt with error since fnContainer variable has memory allocated but value(function expression) is not assigned yet. So line 15 will not even get chance for execution unless error is corrected Once error is corrected line 15 will give output of ' I am expression'