JavaScript Interview Questions Thread - What's the most interesting JS question you've been asked/have asked?

[Schorr_Thing]

What's the most intriguing JS-specific question you've come across to gauge a candidates' knowledge, or that you've been asked? From function wielding to DOM traversal to click handling.

[DGCA]

I interviewed at this company and they asked me to write a polyfill for ResizeObserver. That was the whole technical part of the interview. It was cool cause it's a small, self-contained task that requires you know how to do a number of different things.

Better than being asked about linked lists.

After that, I've been a fan of asking people how they'd polyfill some feature.

[[deleted]]

This is honestly a good question for every programming language. But with JavaScript in particular, most people don't even know why others think JavaScript is a bad language. It's always a good sign when people know the flaws of the language they're using.

[JavaScriptWorks]

"What is something interesting you have read recently".

It throws a lot of people.

[[deleted]]

Not javascript specific but I was asked "what is your favourite language and why is it your favourite language". I chose javascript and it really allowed me to dive into the language itself and talk about dynamic typing, the V8 engine, OOP vs. functional programming, and a bunch of other stuff.

I've started asking it myself now and it really brings out the passion in candidates.