Give me a Sr. level challenge in OOP JavaScript please!!!

Question

I am currently looking for a new job, and just want to be aware of what kind of expectations does employers have about JavaScript OOP, when they mention that in a job description. I know there are some high level programmers here around!!

--- update ---

I have mentioned below some links (learn and practice REGEX, SQL + OOP JS course and more), I put them all together here: https://code.sololearn.com/WsFtzDOoJk06/
And will update it every time I will find something worth-full

Answer 1

@yarik that website ~regexone was quite helpful to me since I had a problem with regular expressions

thanks!! 👍

Answer 2

@Jayden LeCorps
Thanks for advise. But I am ok with JS challanges, and they mostly expose tricky parts of JS. Manipulating DOM is also not my weakest part.

You know, for instance if you want to learn REGEX, I would advise you this website: https://regexone.com/
because it gives you challenges to understand essentials of it, with hints and answers.

If you want to level-up your SQL level I would suggest you this website:
https://sqlzoo.net/
because it gives you challenges, hints etc. to learn you quickly essentials.

So, I am seeking similar source about OOP in JS, because it's prototypical inheritance and not exactly classical OOP paradigm is important to be fluent and experienced with.

Answer 3

@Roy
You are welcome!
This website
https://regex101.com/
I am using to make a Regex pattern, and testing it

Answer 4

WOW I found free course made by Google, AT&T, Github
https://www.udacity.com/course/object-oriented-javascript--ud015
created by Hack Reactor, a bootcamp for programmers in San Francisco, where tuition cost is $18 000. So it's worthy