Top Javascript Interview Questions for Junior Developers (answers included)

[@serhanmmiah7315]

Thank you got a junior developer interview role soon. I did have one where they ask what is OOP and what is asynchronous programming and why we use use it.

[@ede.5487]

Thanks this helps a lot. I know how to code in JS but the terms and explaining is what I need to focus on

[@catherinelijs]

Thanks Ed, good luck!

[@adennis200]

I hope you passed ;) But in general explaining is not ju a t about how to phrase it but its about understanding. I think many people, including me, have made the mistake that they learned the syntax and maybe some basic theory behind all of that but they have never dived deeper. Ans its very important to fully understand the lines if code and everything that goes into it.

[@marsdwarf]

Loved the explanations, would love to see more vids like these :)

[@Skw384]

1 - What’s the difference between VAR, LET AND CONST 2 - What’s the difference between null and identified 3 - What’s the Difference between == and ===? 4 - What does JSON stands for and what’s its use? 5 - Difference between GET and POST request

[@AndrewTSq]

Seems way too simple questions to be honest to be in a real interview.

[@Skw384]

@@AndrewTSq I’ve never gotten those questions honestly

[@Joe-od3td]

No chance, if these are the questions then im good

[@davidgarcia-rv3fs]

thanks Dave, from another Dave

[@_tanzil_]

JavaScript is my first programming language and I'm at the very close to the end of the course I'm taking to learn. What I want to say that, I know and can answer all of these questions you mentioned. That gives me more motivation 🤗

[@catherinelijs]

That’s amazing! I’m glad you found it helpful

[@marshallthecrew_itsme]

Good portion of actual questions, Keep it High, good luck to You !!!!

[@catherinelijs]

Thank you!

[@ThaitopYT]

Thanks for the info. I only know "== vs ===" and "var, let, const". Other things I kinda know how to use it but don't know what it actually is, except the "get and post" I have no idea because never touch any server-client things.

[@Surykatkazkosmosu]

At 4:12 it sound like you said "the variable is actually unaccessible", but you clearly meant it is accessible. It seems to be due to a jump cut.

[@tsdineshjai8565]

Good Video C Li, just looking forward for next set of questions at a higher level

[@catherinelijs]

Thanks! I have something in the works!

[@youvegotmail9385]

This is great and very helpful. Keep them coming.

[@catherinelijs]

Thanks! I’m working on more content that I’ll be publishing soon

[@keifer7813]

Wow, last question opened my eyes. Appreciate the vid

[@catherinelijs]

Thank you! More content coming soon that hopefully helps out

[@coffeymay6775]

I have been getting asked TDD questions and Big O stuff

[@danielokediran8303]

i really need a mentor even if it intern i will appreciate because i need to chapping my skill and am a fullstack dev and thank you

[@mirnataher9905]

Thank you so much that was helpful and it would be great if you made a longer video or a series I'd definitely watch them ♥️♥️

[@catherinelijs]

Thank you so much for watching Mirna! I do have a playlist with more additional JavaScript videos on some other concepts here: kzbin.info/www/bejne/q5TRZZ13hbx1mrM

[@peeveBR]

I've been in a lot of Jr interviews lately and have not received any of these questions, sorry but they are too easy. If I ever get asked this I guess I would be lucky.

[@sonsy-]

What did you get asked?

[@peeveBR]

@@sonsy- Well typically for frontend even at the jr level they ask about the specifics of React and Redux . . . if that is what they are using. Also they will ask about GET and POST but far more in depth than this video aludes. The only time you would be asked such easy questions would be if they made you take a multiple choice test that also has algo problems at the end. I promise I'm not trying to be negative to Catherine, I myself am just frustrated because I seem to be getting insanely hard panel interviews lately which is nerve racking enough, but the questions are far more specific and in detail. I'd say a question they may have on the same note as Catherine's HTTP request question would be something like, "take me through the entire process of a POST request, how does it connect to your backend API and what does it mean that HTTP requests are stateless?" That would be a somewhat easy question from what I have dealt with lately. A lot of entry level jobs out there asking for 3+ years of experience . . .

[@peeveBR]

@@sonsy- Another question I just remembered is, what is your current code testing process? What would be your process of insuring your code is ready to go live?

[@sonsy-]

@@peeveBR Thank you very much!!! It will help significant for my upcoming interviews. 👍🏼

[@peeveBR]

@@sonsy- awesome glad to help, just make sure to dig deep and terminology really matters in these interviews. You may know how to do things and not know exactly the proper terms but they definitely want to hear proper terminology. This is something I'm working a lot on right now cause I'm bad with that stuff.

[@tarike9808]

i think closure and variable scope is also a very tricky concept in javascript.

[@goktugerol1127]

Your interview question videos reduces my stress compared to others... I have an interview at Google, do you think they ask similar questions at Google as well? I had interviews in random companies but for Google, I'm kinda nervous. Plus, they make interviews based on vanilla JavaScript or can they ask unexpected questions like questions from random frameworks etc?

[@catherinelijs]

I doubt they would ask questions from random frameworks, unless specified in the job posting. Typically they ask foundational concepts like algorithms, OOP, systems design and vanilla JavaScript. Very impressive that you have an interview at Google! Good luck!

[@ezevalentine7610]

Naa Google will not ask you these ones😂

[@weareloved]

Thank you so much 💚🙏🏼💚

[@sathirakatugaha974]

That was so helpful!

[@catherinelijs]

Thank you! I’m glad you enjoyed it

[@asagiai4965]

1.) One is more secure than other. It also doesn't show on the browser address bar. And it is usually use when submitting a form. 2.) Javascript Object Notation, a data structure using key value pair. It can represent object when parse. 3.) The other one is deeper and more strict. 4.) One of them means there's no value. The other one means there's no child or member of the current property. 5.) They are ways to create variable One of them don't change value One of them allow the variable to be modify regardless of where it is the code. As long as you declare it first. The last one is a standard way of declaring a variable.

[@AmitYadav-el5wg]

Awesome, please makes some video on advanced concepts of javascript. I think i m first viewer from india

[@catherinelijs]

I am researching a few video ideas that should be able to help. Stay tuned!

[@AmitYadav-el5wg]

@@catherinelijs please makes video on event loop

[@0the0ambient0]

Very helpful. Thanks.

[@mode2317]

how u made ur vscode font weight like that? 2:20

[@kapiljhajhria]

Except the let, var and const question, no one has asked me other questions even a single time. All the other questions are like book definitions. I won't be surprised if indians boomer ask such questions. Good interviewers will always ask questions that test your practical knowledge. Like they will ask you write small piece of code and ask you "WHY" did you write that particular line? Can you improve that line? Why not use xyz instead of this? Things like that.

[@rc-wingman5719]

jup.. exactly.

[@kunalgholve5075]

var variables supported hoisting but let and const Not(go into the temporal dead zone).

[@loganj6203]

This helps me a lots Thanks :)

[@catherinelijs]

Glad you found it helpful!

[@cristianmetz9470]

Thanks! keep ehm coming

[@catherinelijs]

I will. Thanks for watching!

[@ratulmahmud6231]

Thank You 😃😃 Please upload more like this

[@catherinelijs]

I will! Thanks for your kind words

[@vnm_8945]

let won't be undefined if you use it before u declare it, it will give u reference error, but var will be undefined if u use it before u declare it and no error will be thrown.

[@movoid12]

Super helpful

[@bobbyjonas2323]

Great job nice video 👍

[@catherinelijs]

Thanks!

[@tyengineer0]

Loved this😃 you gave me a small little boost of self-confidence that my brain needed thank you! I nailed all of this lol good stuff dude🙌🏼💯

[@catherinelijs]

Awesome glad you enjoyed it!

[@steafansteinocher462]

Dang namaste JavaScript will turn you from noob to junior dev in 10 episodes

[@jalalbmnf]

But you can send data via request URL too)))

[@tkimdev]

any recommendations to find junior dev roles?

[@catherinelijs]

It really depends on where you're located (if it's a bigger city with a diverse tech scene, or a smaller city with less options), but with the availability for work from home jobs as well, there's a lot of resources to start with. I've had success with LinkedIn as there's a large number of recruiters there, so I would have an updated profile and indicate that you're looking for new opportunities. It would be a good start as well, since some jobs you may find on Indeed.com or other job boards go to recruiters first.

[@tkimdev]

@@catherinelijs thank you! got an interview with Amazon

[@kllokoq]

feel good video!

[@catherinelijs]

Thank you!

[@sparrowestes962]

Thanks a lot!

[@catherinelijs]

You're welcome!

[@infiniteteam8609]

good tank you lady

[@simpleman1218]

null is not object it's js bug thet show's null as object but its not

[@deepak8586]

Awesome!!

[@deepanshu.770]

Honestly They are very easy questions 😅

[@catherinelijs]

It really depends on the organization, and the interviewer as well.

[@sergiomendoza6833]

thanks

[@bjni]

idk trying to a junior backend role lol

[@kylepaulmcfly]

Thanks maam

[@catherinelijs]

Glad you liked it!

[@_Ghost_4550]

Awesome... 🖤🙌

[@catherinelijs]

Thank you! Cheers!

[@_Ghost_4550]

@@catherinelijs yep..😇

[@yongkiamirson2376]

The Es2♡

[@chrisdietrich1533]

thanks!

[@donbraga4863]

The answer to any Javascript question is "Spaghetti!"

[@drxxxp16]

null is not an object

[@soy1700]

“..jahvascript-“ closes video

[@vvv35724]

WHY didn't nobody notice her words about "null is object" ?? I guess, it is better read some docs before making videos (or watching it)😅😅

[@vvv35724]

video looks good but wrong information disappointed me :( gone search smthng else

[@edwinly9865]

i have a crush on you lmaoooooo

[@Boseph_Youtube]

These questions are so elementary, these are grown adults trying to get jobs in engineering. They should be expecting higher level questions than this.

[@rubenverster250]

more like intern questions -_-

[@haroonahmad3864]

That was easy :L