Top Javascript Interview Questions for Junior Developers (answers included)

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  • Опубликовано: 21 ноя 2024

Комментарии • 93

  • @Skw384
    @Skw384 3 года назад +21

    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
      @AndrewTSq 3 года назад +7

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

    • @Skw384
      @Skw384 3 года назад +9

      @@AndrewTSq I’ve never gotten those questions honestly

    • @Joe-od3td
      @Joe-od3td 2 года назад +4

      No chance, if these are the questions then im good

    • @davidgarcia-rv3fs
      @davidgarcia-rv3fs 2 года назад

      thanks Dave, from another Dave

  • @serhanmmiah7315
    @serhanmmiah7315 Год назад +4

    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
    @ede.5487 3 года назад +24

    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
      @catherinelijs  3 года назад

      Thanks Ed, good luck!

    • @adennis200
      @adennis200 2 года назад +1

      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.

  • @_tanzil_
    @_tanzil_ Год назад +3

    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
      @catherinelijs  Год назад

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

  • @marsdwarf
    @marsdwarf 2 года назад +3

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

  • @asagiai4965
    @asagiai4965 Год назад +3

    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.

  • @ThaitopYT
    @ThaitopYT 2 года назад +2

    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.

  • @marshallthecrew_itsme
    @marshallthecrew_itsme 2 года назад +2

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

  • @keifer7813
    @keifer7813 2 года назад

    Wow, last question opened my eyes. Appreciate the vid

    • @catherinelijs
      @catherinelijs  2 года назад

      Thank you! More content coming soon that hopefully helps out

  • @Surykatkazkosmosu
    @Surykatkazkosmosu Год назад

    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
    @tsdineshjai8565 3 года назад +3

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

    • @catherinelijs
      @catherinelijs  3 года назад +1

      Thanks! I have something in the works!

  • @steafansteinocher462
    @steafansteinocher462 Год назад

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

  • @coffeymay6775
    @coffeymay6775 3 года назад +1

    I have been getting asked TDD questions and Big O stuff

  • @goktugerol1127
    @goktugerol1127 Год назад +1

    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
      @catherinelijs  Год назад +1

      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
      @ezevalentine7610 Год назад

      Naa Google will not ask you these ones😂

  • @youvegotmail9385
    @youvegotmail9385 2 года назад +1

    This is great and very helpful. Keep them coming.

    • @catherinelijs
      @catherinelijs  2 года назад

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

  • @kapiljhajhria
    @kapiljhajhria 3 года назад +2

    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.

  • @mirnataher9905
    @mirnataher9905 2 года назад +1

    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
      @catherinelijs  2 года назад

      Thank you so much for watching Mirna! I do have a playlist with more additional JavaScript videos on some other concepts here: ruclips.net/video/ucn4jAPWBdQ/видео.html

  • @danielokediran8303
    @danielokediran8303 Год назад +1

    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

  • @AmitYadav-el5wg
    @AmitYadav-el5wg 3 года назад +1

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

    • @catherinelijs
      @catherinelijs  3 года назад +1

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

    • @AmitYadav-el5wg
      @AmitYadav-el5wg 3 года назад

      @@catherinelijs please makes video on event loop

  • @tarike9808
    @tarike9808 Год назад

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

  • @movoid12
    @movoid12 2 года назад +1

    Super helpful

  • @mode2317
    @mode2317 Год назад

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

  • @peeveBR
    @peeveBR 3 года назад +2

    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-
      @sonsy- 3 года назад

      What did you get asked?

    • @peeveBR
      @peeveBR 3 года назад +4

      @@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
      @peeveBR 3 года назад +2

      @@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-
      @sonsy- 3 года назад +2

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

    • @peeveBR
      @peeveBR 3 года назад +3

      @@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.

  • @yongkiamirson2376
    @yongkiamirson2376 3 года назад +1

    The Es2♡

  • @0the0ambient0
    @0the0ambient0 2 года назад +1

    Very helpful. Thanks.

  • @tyengineer0
    @tyengineer0 3 года назад +4

    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🙌🏼💯

  • @sathirakatugaha974
    @sathirakatugaha974 2 года назад +2

    That was so helpful!

    • @catherinelijs
      @catherinelijs  2 года назад

      Thank you! I’m glad you enjoyed it

  • @vnm_8945
    @vnm_8945 Год назад

    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.

  • @weareloved
    @weareloved 2 года назад +1

    Thank you so much 💚🙏🏼💚

  • @infiniteteam8609
    @infiniteteam8609 2 года назад +1

    good tank you lady

  • @deepanshu.770
    @deepanshu.770 3 года назад +1

    Honestly They are very easy questions 😅

    • @catherinelijs
      @catherinelijs  3 года назад +1

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

  • @kylepaulmcfly
    @kylepaulmcfly 3 года назад +1

    Thanks maam

  • @kunalgholve5075
    @kunalgholve5075 3 года назад

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

  • @sergiomendoza6833
    @sergiomendoza6833 2 года назад +1

    thanks

  • @donbraga4863
    @donbraga4863 2 года назад +1

    The answer to any Javascript question is "Spaghetti!"

  • @loganj6203
    @loganj6203 3 года назад +1

    This helps me a lots
    Thanks :)

  • @ratulmahmud6231
    @ratulmahmud6231 3 года назад

    Thank You 😃😃
    Please upload more like this

    • @catherinelijs
      @catherinelijs  3 года назад +1

      I will! Thanks for your kind words

  • @kllokoq
    @kllokoq 3 года назад +1

    feel good video!

  • @cristianmetz9470
    @cristianmetz9470 3 года назад +1

    Thanks! keep ehm coming

  • @bobbyjonas2323
    @bobbyjonas2323 3 года назад +1

    Great job nice video 👍

  • @tkimdev
    @tkimdev 3 года назад +1

    any recommendations to find junior dev roles?

    • @catherinelijs
      @catherinelijs  3 года назад +2

      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
      @tkimdev 3 года назад

      @@catherinelijs thank you! got an interview with Amazon

  • @sparrowestes962
    @sparrowestes962 3 года назад +1

    Thanks a lot!

  • @jalalbmnf
    @jalalbmnf 2 года назад

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

  • @deepak8586
    @deepak8586 3 года назад +1

    Awesome!!

  • @chrisdietrich1533
    @chrisdietrich1533 3 года назад +1

    thanks!

  • @simpleman1218
    @simpleman1218 3 года назад +1

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

  • @soy1700
    @soy1700 3 года назад +1

    “..jahvascript-“ closes video

  • @_Ghost_4550
    @_Ghost_4550 3 года назад

    Awesome... 🖤🙌

  • @drxxxp16
    @drxxxp16 2 года назад

    null is not an object

  • @Boseph_Youtube
    @Boseph_Youtube Месяц назад

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

  • @vvv35724
    @vvv35724 2 года назад

    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
      @vvv35724 2 года назад

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

  • @rubenverster250
    @rubenverster250 3 года назад +1

    more like intern questions -_-

  • @edwinly9865
    @edwinly9865 2 года назад

    i have a crush on you lmaoooooo

  • @haroonahmad3864
    @haroonahmad3864 3 года назад +1

    That was easy :L