Tricky JavaScript interview questions and answers

[@vinodhkumar457]

This one is important for JS developers.

[@Techsithtube]

Thanks for watching ! :) Thanks for the support ! )

[@JLO72713]

Very helpful, your you defeated the Google beast

[@ArjunKesava]

To print the length of arguments (17:33), we can simply write: return arguments.length; inside the function instead of using Slice method.

[@Techsithtube]

That is true Arjun. Slice helps to convert argument to an array and then you can use other array features like join() and things.

[@GabrielVasile]

For getting total number of arguments, in ES6 we can do let x = function (...args) { return args.length; } and for the method chaining we can use return this;

[@zajebojca]

This question with "returning total number of arguments" can be solved in much simpler way. const x = function(){ return arguments.length; } The object 'arguments' has property ''length'.

[@cassavandumbi2734]

You are either wrong or you mean the opposite. the below returns 4 function x(a,r,t){ return arguments.length; } console.log(x(5,5,6,7))

[@dand8282]

you can count formal parameters (aka "required arguments") with function.length, not arguments.length, which is a count of what's passed.

[@kamoroso94]

I was thinking the same thing, but also what's the point of no loops? How would a loop even help solve this problem lol.

[@ravikumargrandhi6315]

output will be 4

[@ravikumargrandhi6315]

x(.....) function will return how many arguments you are passing while calling x(....).

[@vinikett9114]

Brother you are one of the most efficient teachers for teaching programming on youtube that i could find.You explain concepts really well.Its sad that youtube is doing this to constructive youtubers like you.You have all my support!

[@sadunozer2241]

5 years later and this video is still relevant. I didn’t watch it fully this time… but I do remember everything about it vividly. An absolute classic❤

[@robertmasters5578]

This is great, I have a couple of job interviews next week for JavaScript roles and you have really helped me to build my confidence in preparation for this. Please keep posting videos :-)

[@astro-zodiac]

6:10 That's a cool trick to impress your co-workers, If they dont know it 😂😂

[@rojiherrera]

"This is an INTERVIEW, not a RACE" -techsith ☝️

[@vladanng]

What a fantastic videos. I remember watching your one year ago it feel like nostalgia, because i spend hours and hours watching your videos, trying to understand things. For now, i did not find better one tutorials on JS stuff on youtube at least. Just fantastic.

[@Techsithtube]

Thanks for watching and welcome back !

[@nintichance]

I've been watching your videos over the past few days and they've been extremely helpful and informative!

[@Techsithtube]

Thanks for watching Ninti! :)

[@subratkumar5901]

I am following you since couple of months.. You are champ man. Keep it up.. 1000 likes from my side

[@Techsithtube]

Hi Subrat, thanks for watching! :)

[@xuelianwang5300]

Very interesting JavaScript question! Thank you for sharing!! Thank you for taking time and effort to make so many nice JavaScript videos!

[@surferbum618]

Thank you for helping strangers! I hope KZbin does right by you and you can keep the videos coming. They're a great help.

[@tochukwuibe2139]

Getting ready for my first interview, your content is really helpful

[@Techsithtube]

Good luck with your interview. !

[@meetidnani]

Thanks for your videos, they are really helpful. For the question related to number of arguments ...i could simply also do the below var y = function() { console.log(arguments.length); }; y(1,2,3,4,5); Any specific reason for using [].splice ......

[@Techsithtube]

yes you could simply use arguments.length

[@LolowBlazee]

Love those tricky questions, we actually keep learning :)

[@sammiliu2524]

Great video, very useful

[@danielhughes3758]

Thank you so much for this. It's interesting to hear your perspective on these tricky questions and I appreciate your openness and honesty about youtube monetization

[@Techsithtube]

Glad it was helpful!

[@momentswithmanisha]

I learned new things. Thank you clearing my Concept 😇

[@SlayBellsMusic]

I'm finding all your interview videos helpful. I have my first ever on Monday and feel much more confident going in.

[@babinicz91]

Best Interview series!

[@DevRaj-tk3kc]

Nice tricky questions. These are proper genuine content videos.

[@ryanlozon5712]

Please keep up the awesomeness.

[@ernestromen1479]

You helped me a lot in job interviews. Actually I am preparing for an interview right now with the help of your video. Thank you!

[@RajendraTaradaleBeHappy]

Thanks for tricky question - didn't aware of this magic

[@shawnmichaelalberto7519]

@3:26 now I fully understand how styled components work. You are such a good teacher

[@jakekim1442]

Awesome tutorials man.

[@tarekjamil6348]

Jake Kim Hi

[@pavelerokhin1512]

There is no inappropriate content in this video, dear KZbin

[@ollehbudiak7150]

Thanks for your work. console.log(arguments.length); vs console.log([].slice.call(arguments).length);

[@Toni7926]

Nice video, keep up the good work! (:

[@Techsithtube]

Thanks for the support ! )

[@nancycreeksong9879]

Techsith videos have been very useful to me. Thank you.

[@SK-ur3hw]

Great interview questions 👍🏻

[@Techsithtube]

Thanks for watching ! :)

[@njcoutinho1]

Wonderful to learn this. Thank you

[@ejikeezekwunem4162]

What a great video. I had my hand over my head all the way. Like I would literally fail all the questions without your solutions. Thank you so much.

[@vlad981]

Thanks! Great video! Hope KZbin will change its policy, keep it up please)

[@Techsithtube]

Thanks for the support ! )

[@MrVisheshsingh]

Thanks for the video. We all support you for all the hard work you are doing!

[@Techsithtube]

Thanks for your support! :)

[@theinternetcash]

my first javascript interview coming up very soon

[@Techsithtube]

Good luck!

[@ryanmfahey1]

This is very helpful. I am conducting JavaScript interviews in the next couple weeks. This has been a great resource (along with your other videos).

[@Techsithtube]

Thank you for watching Ryan. Good luck with your interviews!

[@ErnestGWilsonII]

I am already subscribed to your channel and I get alerts but I wanted to let you know that I really appreciate your content thank you for making videos and posting them for us!

[@Techsithtube]

Ernest , Thanks you for watching! :)

[@christmasvillage3652]

your videos are awesome and KZbin is very discouraging. Keep up the good work sir.

[@MrErererererr]

Thank you. I have my interview tomorrow and if I pass it, it thanks to you.

[@jcmarquezgalvis]

Did you pass?

[@ra5898]

Plg send me the question I don't have idea I prepared the interview my email id [e-mail] I have prepared in web development plg text all questions

[@Fikayoz]

Thank you so much for this video! I hope this channel grows even larger!

[@Techsithtube]

Thanks for your support Fikayoz!

[@atmansangeethamani5373]

Hi Sir, Your javascript interview part of videos are very helpful. actually I have found an another way in that question of function return total number arguments you have explained like function x(){ return [].slice.call(argunments).length; } x(1,2) // 2 length Found another way is arguments is a array like object it has number of array of arguments of function function x(){ return arguments.length; } x(1,2,3) // 3 simply we return arguments.length that will give lenght of arguments of function am getting answer for this way too.. Thanks once again sir.

[@gouravgirdhar9973]

I'm grateful for all the effort you are putting in which makes learning so much easier. Thanks for all the hardwork

[@Techsithtube]

Thanks for watching Grourav. I am gladthat it helped!

[@CodersGyan]

One of the best tutorial :)

[@pmahesh6789]

Your all videos so far I have been seen are really deserves thumbs up ( 👍 ), Please keep doing your good work... and hope KZbin should not harm you.

[@swethas7320]

Good video to understand JavaScript concepts in depth

[@sam123sujeet]

Really like this tricky interview questions series. Keep posting it

[@ozzyfromspace]

@17.25, a more concise solution is: const x = (...rest) => rest.length; Awesome video, Techsith. I'm 100% subbed 🏆🎊. Most of these questions really had be thinking haha

[@kamoroso94]

KZbin's algorithm is so stupid. Your videos are good quality and don't deserve to be demonitized.

[@Techsithtube]

Thanks for the support Kyle! :)

[@nandac2820]

This video is great but and your explanation is good. I really did't understand the concept of asking these kind of questions in interview. Until and unless you faced these kind of scenarios in real time you never know the answer. I do have some decent experience like 6+ in JS but I faced these situations very rare when we work on framework. (9 out of 10 developers dont remember things after fixing an issue) So if some one answered these kind of questions means they saw these videos(assume {some number} out of 10) or read somewhere. So what are you interviewing real time experience or some interview preparation ? As an interviewer I will ask concepts(not these tongue twisters). architecture of application/framework and mainly approach on solving problem and wiling to learn.

[@miroslavspirkoski5623]

Thanks a lot for this video, you are really unique with this content!

[@nitinagrawal6637]

Appreciate & yes maximum people make a list of questions to ask from the internet for the interviews & then start expecting the answers for those questions from candidates & in reality maximum interviewers also dont have any freaking idea for those answers. But current interviews have become a race, a questions/answers session, a Viva.

[@lolmos]

Dude I love the videos you're really helping me and many others on our Dev path

[@PhotoLightTV]

techsith, your videos are amazing!

[@sanjaysingh-sy6zu]

Thanks for making this video which helps me understand tricky concepts of JavaScript. Thanks a bunch

[@ephdawg3374]

Thanks for your videos, they are always so helpful. Learned some great things from this one !!

[@ParasFtl]

This is one of the best channel to advance your JavaScript.

[@adamcrap]

Great content!! I am preparing for an interview in a couple days and your videos are a huge help!!

[@Techsithtube]

I am glad Adam . thanks for watching!

[@aakritigangwal7659]

Thankful for good bunch of Interview questions ons JS.

[@rampande5830]

found tutorial very useful. Learnt new things in JS. Thank you.

[@shridhargovindaiah]

Excellent Video. We support you and we need more educational video from you.

[@Techsithtube]

Thanks for watching Shridhar!

[@devolee8302]

'Document.body.cotentEditable = "true" ' is super cool !!!

[@Techsithtube]

Yes first time i saw contentEditable I was blown away. :)

[@alex_zan]

Really helpful video! We need more of those on KZbin!

[@Techsithtube]

I have a plan for more such videos. keep an eye on the channel for that.

[@kurisuisaway]

You're awesome, your videos are helping me a lot. If I pass my interview tomorrow I'll become a patreon. Thank you very much!

[@Techsithtube]

Good luck with your interview Andrea. :)

[@SketchStack]

Awesome man. Want to see more interview tricky question series. Awesome job.

[@cemiluzunhasan1366]

I'm studying my interview with your videos. If I pass, I will edit my comment and I hope it's going to be well because the videos are very great. The contents are preparing the audience to the tricky and hard questions. Especially the ones that include mock interviews. Keep it going!

[@viddusliteracy9087]

Hey did u selected or not

[@Michael-hj9fx]

This was a very informative video. Thank you for creating it! I'll be sharing this with some of my programmer friends :)

[@keshavgupta6549]

Where are you right now? Did you land at your first job? I am having an interview today.

[@6keff]

Excellent video!, I didn't knew about content editable property until now. Thanks!

[@Techsithtube]

yes, its a neat trick.:)

[@sufiyan0011able]

Thanks for making this video. Its a great help for guys like us.

[@Techsithtube]

Sufiyan, thanks for the comment.

[@andreybindyuk769]

Quite important and useful tutorial, many thanks!

[@joyandlove7710]

Thanks for the tips! I hope I am not running into any of the questions in my interviews, but it is so good to know.

[@Techsithtube]

Its important to know these questions. Most of the times people wont ask such questions but you might one or two people who would ask such silly questions to throw you off.

[@anuranjansrivastav9864]

Hi, Please elaborate as why arguments[0]() is causing this.length as 2. What makes arguments behave like that.

[@Mr_BetaMax]

I did not know about the contenteditable attribute!! It's awesome

[@dikshachavan9075]

you are great at teaching. very useful examples to understand js

[@Techsithtube]

Thank you Diksha, Keep on learning!

[@alon8185]

Thanks! I learned allot in just 21 minutes.

[@shwetapaliwal2424]

seriously very much needed video for developers

[@Techsithtube]

Thank you shweta for a nice comment! :)

[@yiyingw6506]

I really like this series! I learnt a lot from watching these. Thank you!

[@Techsithtube]

Thanks for watching Yiying! :)

[@sistlavenkatesh2993]

This video is important video for ui developers. Very informative video infact.

[@DanielDogeanu]

That thing with contentEditable blew me away! Awesome trick!

[@nunosantosdev]

im glad you fixe YT problems for ads...your videos eally helpme a lot thanks👏

[@itsimpl6257]

The reason you cited why the interviewer asks such weird questions are all very correct.

[@swethavutukuru]

u have gr8 knowledge on Javascript. I am learning a lot from u. I am looking forward for more technical videos from u.

[@debanjanbasu2597]

I am just thankful to you from heart for these videos.

[@glendysfilsinger5473]

I am a new subscriber, and I can tell you that I love your content and videos... It is awesome!!! keep up the great work :)

[@rahulsalvi6623]

Really helpful video. Helped me to understand the core concepts.

[@harikumargurudu5260]

Thank you for your videos. We are with you and please keep on posting videos.

[@Techsithtube]

Hari, Thank you for your support! :)

[@sanketatmaram]

function a() { console.log(arguments.length); } Above will also work for arguments length.

[@Imjaffarkhan]

Very well explained. Thanks Sith

[@Techsithtube]

Thanks for watching Jaffer.

[@p2v515]

Amazing video! Like the job you do, good luck with it hope you stay motivated!!

[@Techsithtube]

Thanks for the support ! )

[@SiddharthShivhare]

This video is so important and you have shared very good questions with valid answers. Thanks a lot

[@rajatsrivastava574]

The way you explain the JavaScript are really awesome.

[@Techsithtube]

Glad you think so! Thanks for watching!

[@AAA-hv7nr]

I really appreciate these videos and the content is totally PG.

[@Techsithtube]

Thanks for your support :)

[@bogdanbugnar7415]

This is great man! Keep on going!

[@indianhikinggirl]

Please come up with more videos of this type. It would be very helpful for interviews. Thanks

[@Techsithtube]

I have a whole series of such videos. do check it out the playlist

[@naveenreddydepa8324]

Great video to learn JS tricky interview questions. I felt thrill waiting for each answer of a question

[@AradhanaSinghAdecentgirl]

Thank you So much. It really helps.You are doing great :)

[@tomlemanh5506]

.... just leaving a comment ;) Great contents man. Keep up the good work! U got a new subscriber

[@Techsithtube]

Thank you for subscribing :)

[@swapnilsaxena1654]

Really helpful. Appreciated all questions

[@MrCooldude03]

You know finest art of teaching.. A big fan of yours.. learnt a lot from you.. you deserve a like and a comment.. will be there for support you always, if you keep on posting video like this. Thank you Sir

[@Techsithtube]

Thank you for your support! :)

[@sandeepreddy1866]

Good tricky questions. Thanks for your effort in uploading such videos

[@Techsithtube]

Thanks sandeep for a nice comment :)