Top Javascript Interview Questions for Junior Developers (answers included)

In this video I go over the top junior frontend developer interview questions that are asked in every junior frontend, web and fullstack developer interview.
I will also cover the suggested answers for each question and show examples.

[asagiai]

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.

[ede.]

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

[serhanmmiah]

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.

[Skw]

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

[_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 🤗

[marsdwarf]

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

[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.

[marshallthecrew_itsme]

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

[tsdineshjai]

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

[mirnataher]

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 ♥️♥️

[youvegotmail]

This is great and very helpful. Keep them coming.

[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.

[keifer]

Wow, last question opened my eyes. Appreciate the vid

[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.

[vnm_]

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.

[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.

[danielokediran]

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

[coffeymay]

I have been getting asked TDD questions and Big O stuff

[steafansteinocher]

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

[tarike]

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