JavaScript Mock Interview | Interview Questions for Senior JavaScript Developers | Part 1

The ninth chapter of the Turing Mock Interview series takes a look at what the technical interview for a JavaScript developer would look like. Watch the video to learn more about the probable questions that might appear in a JavaScript test and Interview, brush up on the core concepts before the D-Day, and prepare well for your next JavaScript development interview. Stay tuned for the second part of the video!
Become a Turing software developer today.
Take the Turing test now: turing.com/s/Qh...
Find remote US software jobs: turing.com/s/ez...
Hire software developers of Silicon Valley caliber: turing.com/s/hc...
Watch more Turing.com reviews: turing.com/MVWqQr
To stay informed about the latest updates at Turing, follow us on:
Instagram: / turingcom
Facebook: / turingcom
Twitter: / turingcom
LinkedIn: / mycompany
...
#MockInterview #JavaScriptDevelopment #JavaScriptDevelopmentJobs #JavaScriptMockInterview #TuringJobs #RemoteJobs #TuringDeveloper
About Turing.com:
Turing connects exceptionally talented software developers to remote engineering jobs at Silicon Valley and US-based companies. 200+ companies, including those backed by Google Ventures, Andreessen Horowitz, Founders Fund, Kleiner Perkins, and Bloomberg, have successfully hired Turing developers.
- For over 1M software developers across 150+ countries, Turing.com is the preferred platform for finding remote US software engineering jobs.
- Turing offers a wide range of long-term, full-time remote jobs for Full Stack, Front-End, Back-End, Mobile, DevOps, and AI/ML developers.
- Turing remote developers enjoy higher pay than local standards in most countries, a healthy work-life balance, a strong sense of community, and rapid career growth.
Turing is backed by well-known investors like WestBridge Capital, Foundation Capital, Facebook’s first CTO (Adam D’Angelo), executives from Google, Facebook, Amazon, Twitter, and Founders Fund (investors in Facebook, Tesla, Asana, etc.), among others. The company is led by serial AI entrepreneurs Jonathan Siddharth and Vijay Krishnan, whose previous firm leveraged remote talent and was successfully acquired.
The company was founded in 2018 and is headquartered in Palo Alto, California.

[@aslefhin]

Jose's Introduction 0:08 Lav's Introduction 0:54 Interesting projects you've worked on 1:52 Which framework/library did you use for the project? 3:52 Is Javascript single-threaded or multi-threaded? 4:00 How does Javascript handle asynchronous operations? 4:28 How does Javascript know when a Promise is fulfilled and executes the callback? 5:37 What is the event loop? 6:35 What is the difference between Promises and Observable? 8:47 What is the difference between Promise.all() and Promise.allSettled()? 10:02 What are event emitters? 11:12 Can we unsubscribe from an event? 11:59 What optimizations are you familiar with? 12:12 What is the difference between call() and apply()? 18:40 What's the difference between creating an object using const and Object.freeze()? 19:38 What's the difference between Map and WeakMap? 21:00

[@AmanVerma-ci3kg]

Thanks , This is so helpful

[@madhanravi4365]

you missed the dark bark hearing form the background till the end !!

[@furqananwar8449]

Thanks mate 👍

[@martinemanuel8239]

I'm a jr developer and this interview was easy for me, I think I'm ready to land a new job ! thanks Turing!

[@lingeshvirinmoonsamy8692]

this interview is golden I learnt a lot even tho ive been in software about 8 years

[@codewithyemi]

It's a nice interview. A developer is expected to understand the language thoroughly. Looking forward to part 2

[@ruona2133]

This is amazing. The day I’ll try Turing, I hope I’ll be interviewed by Jose. He sounds like a very talented developer 🙌🏾

[@Turingcom]

Jose is indeed awesome! :)

[@dinub8414]

Jose you are a kind interviewer 🙂 I wish the answer about observables would have mentioned streams and operators. This is the most juicy part imo

[@chandanamummaneni906]

You deserve a medal for this content man

[@Turingcom]

We're glad you found this video helpful. Please subscribe & stay tuned to our page! We'll be sure to share more helpful videos 😄

[@sajalgupta7345]

Interesting discussion. It would be nice to see part 2 also. For me, the most interesting question was: "DIfference between const and Object.freeze"

[@Turingcom]

Glad to hear you found this insightful, Sajal! 🙌 Please subscribe to our channel and stay tuned for more helpful videos!

[@yannid5456]

5:44 He was literally expecting him to explain how Event Loop Cycle works

[@prasenjit476]

Yes, he was expecting something about the microtask queue .

[@avisharma3037]

Informative interview.. looking forward to more work of Mr.Lav

[@Turingcom]

Thank you for your feedback, Avi 😄🙌 We'll make note of this and be sure to include this in our future videos. Do subscribe to our page so that you get notified of more such videos 😄

[@nishantswain7836]

cant wait for the part 2 of this interview.

[@Turingcom]

Coming soon! Please subscribe to the channel so you get notified of more such videos! 😄

[@AnuragArwalkar]

I would like to see Sr React Developer Interview. Thanks for the great content

[@Turingcom]

We're glad you're enjoying our videos Anurag! :) We shall be sure to pass on your feedback to the team!

[@lousanadachi3796]

What a great developer!

[@aliplaysgtr]

This guy is very good at JS! Thanks for those videos

[@wellingtonluizgaboardi220]

I would like to see part 2 also. Thank you for sharing.

[@Turingcom]

Coming soon! :)

[@shaheershukur]

Great 💜 please upload more front-end, JS and angular related interview videos. These videos are really informative and helpful.

[@Turingcom]

Thank you for such nice feedback, Shaheer! 🙌 We'll make note of this and be sure to include this in our future videos. Do subscribe to our page so that you get notified of more such videos 😄

[@santhoshsiva163]

Very informative video for job seekers and developers

[@thatbackbenchdude]

awesome video

[@juandavidblancovergara2279]

other performance optimizacion can be use worker_threads for isolate to heavy process in secondary threads, normalization table databases 'couse the reusing data insted of data duplacating when there are not normalization is too important, use o(1) methods index insted of o(n) if is posible, hash tables, views and stored procedurs, index data records tables, chunks process with parallel executing promises, paginations list data and of course the cache memory reusing is good idea too.

[@uzomanwanne2751]

Great interview and lessons were learnt

[@Turingcom]

You’re welcome 😊 Glad you found this helpful!

[@beenatiwari4365]

Answer for optimization techniques was really good..

[@Turingcom]

Glad it helped!

[@gulabchandgupta5486]

Great content very helpful thanks 🙏

[@ankitaggarwal8556]

Absolutely stunning video.

[@AnkushKumar-ts6wo]

Thank you sir , video is very interesting for JavaScript developer but I want to one more video for HR preparation.

[@SEnglishTalks]

Good to see you again 😎

[@jatilyadav4000]

Always the best

[@mohammedabulsoud1819]

Nice topic, let's see part 2 please

[@Turingcom]

Coming soon, Mohammed! 🙌 Do subscribe to our page so that you get notified of more such videos 😄

[@MohanLanke]

Please do one more interview on javascript coding challenges

[@jitendrapatidar3791]

great discussion, form this I learned different techniques for code optimization. 👍 thank you for this type of content.

[@ruona2133]

I want to see a part 2 of this 🙌🏾❤️❤️🙌🏾🙌🏾

[@kotlaarunkumar4251]

This is very insightful, thanks for letting the community understand how things work! Can you also pls do videos on blockchain developer interviews as well, thanks in advance!

[@Turingcom]

Thank you for your suggestion, @kotlaarunkumar4251! We'll note this and be sure to include the topic in our future videos. Please subscribe to the channel, so you get notified of more such videos! 😄 -Turing

[@Kaizala1933]

Can't wait for part II

[@biswanathbose8211]

It is a nice informative Video. waiting for the part Second, If possible add some question pertaining callback queue, micro-stack queue and also Global execution area.

[@Turingcom]

Great suggestion! Will keep this in mind for the next video! :)

[@dinub8414]

Quite a bit of confusion there btw event queue and call stack... Asynchronous execution is made possible by the queue, while a call stack is present in any excution, whether javascript or any other runtime. Anyone interested to get a full clear picture, check out Jake Archibald with his talk about the event loop.

[@ismailajallow9555]

can't wait for part 2

[@Turingcom]

Glad you found this helpful, Ismaila! ⭐ Subscribe to our channel and stay tuned for future updates 😄

[@Vamsiri]

Informative

[@brindashah3187]

Waiting for part 2...😍

[@educationfundashorts5254]

Really nice !

[@Turingcom]

We're glad you liked this video. Please subscribe & stay tuned to our page! We'll be sure to share more helpful videos 😄

[@surendersingh6390]

Nice learning experience, keep posted this kind of stuff

[@nightrocks]

call and apply ? thats rare

[@chigurupati_s]

make "UI/UX Designer" Interview plz

[@xeon789]

genius person

[@sufailkalathil169]

Very informative interview

[@Turingcom]

Thanks for listening! :)

[@afifosama853]

🎉

[@pratikbhujel]

I am an NON IT field student and 27 years old ,who is looking for Laravel jobs I am taking tranning about PHP with laravel and I have made couple of projects and work on too as a freelancer , Any tips for entry or jr. Laravel developer? Or should quit ?

[@Turingcom]

Hello @pratikbhujel Turing hires developers with at least 3+ years of full-time, relevant programming experience. For junior or non-technical roles, you could always try checking for our internal positions at careers.turing.com :) Happy to help! - Turing

[@hakanaki]

Please please please, create more of these videos 😭😭😭

[@Turingcom]

Hey Chukwuemeka! 🙌 We're glad you found this video helpful. Please subscribe & stay tuned to our page! We'll be sure to share more helpful videos 😄

[@KREVIAZUKZHOU]

thanks for share

[@Turingcom]

Always welcome! :)

[@jatilyadav4000]

Great Video

[@Turingcom]

Glad you enjoyed it!:)

[@РусланМагамедов-л3м]

Awesome

[@mr.shoaibmalik2488]

Thank you

[@Turingcom]

We're glad you found this video helpful, Shoaib. Please subscribe & stay tuned to our page! We'll be sure to share more helpful videos 😄

[@yashpandit2693]

upload part 2

[@Turingcom]

Coming up soon, Yash 🙌🚀 Please subscribe & stay tuned to our channel! We'll be sure to share more such videos 😄

[@tech5956]

Very useful😊

[@Turingcom]

Glad to hear that! :)

[@lesagecode]

I'm preparing myself to vuejs test on turing Please M. Jose can you do an interview on vuejs??

[@Turingcom]

We shall be sure to let our team know! :)

[@wahebbenzaid543]

I want to pass an interview but after watching some of interviews in turing, I get frustrated. all developers working in turing have a big experience not less than 4 years, I have only 2 years and half of experience in C# and some side projects in JS. :( :( :(

[@Turingcom]

Hello Waheb 😄 Turing hires developers with at least 3+ years of full-time relevant programming experience. For junior or non-technical roles, you could always try checking for our internal positions at careers.turing.com 🙂 Happy to help! - Turing

[@lesagecode]

Great interview ❤️

[@Turingcom]

Thanks! :)

[@РусланМагамедов-л3м]

I wanna see the part two

[@Turingcom]

Thank you for your feedback, Руслан 🙌 Part 2 will be up soon! Please subscribe & stay tuned to our channel! We'll be sure to share more such videos 😄

[@vishnugupta6284]

nice

[@amanchaudhary8494]

are turing test mcq?

[@Turingcom]

Hi Aman 😄 Turing tests are a combination of MCQ tests and coding challenges. You may also refer to the developer FAQ for further queries - help.turing.com/hc/en-us/categories/360000770615-I-m-a-developer- Regards, Turing

[@albertogiuseppe8619]

i would like to see interview questions for juniors JavaScript Developers too

[@Turingcom]

Please subscribe & stay tuned to our page! We'll be sure to share more helpful videos :)

[@anishmahajan4377]

JavaScript interview part 2

[@Turingcom]

Thank you for your feedback, Anish! We'll make note of this and be sure to include this in our future videos. Please subscribe to the channel so you get notified of more such videos! 😄

[@shaikshavalisyed2012]

Good 👍one for me.

[@Turingcom]

Thanks 👍

[@tenebrae1191]

👍👍

[@arjunsingh9634]

lav speacks in 2x