I'm a year late to this question, but maybe this article will be of some help for aspiring full-stack developers: https://medium.com/coderbyte/a-guide-to-becoming-a-full-stack-developer-in-2017-5c3c08a1600c HTML/CSS JavaScript Back-end language Databases & web storage HTTP & REST Web Application Architecture Git Basic Algorithms & Data Structures

One example I heard in an interview once was something along the lines of: Imagine you had a page with a modal that appeared, what's one way you could capture whether or not the modal (or the area outside of it) was clicked? The answer the interviewer was looking for involved attaching one event listener to the page, and then using bubbling/event.target to determine if the modal or the area around it was clicked. Similar to the bubbling example here: https://javascript.info/bubbling-and-capturing