I've noticed online that exercises for JavaScript tend to revolve around algorithms and data structures more than they focus on deeper concepts of the language itself (such as closures, classes, HTML DOM, CSSOM, events, etc.)

And that's why I tried coming up with a collection on my own, that helps you exercise your knowledge of many concepts in JavaScript, most importantly of HTML DOM and events.

While performing these exercises, you also get to know about some important ideas in computer science (e.g. binary search), mathematics (e.g. Heron's Formula), and programming in general.