Okay, this is extremely neat: Josh Comeau made this great site called Operator Lookup that explains how JavaScript operators work. There are some code examples to explain what they do as well, which is pretty handy.

My favorite bit of UI design here are the tags at the bottom of the search bar where you can select an operator to learn more about it because, as you hover, you can hear a tiny little clicking sound. Actual UI sounds! In a website!
This Operator Lookup is nice, but a bit incomplete. A couple of operators I selected was answered with “Honestly, I don’t really understand [The operator name I selected] operators; hopefully this MDN link will help you out:”
Agreed. The website is really missing it’s point when the binary operators aren’t even explained and some other operators just have a piece of code as an explanation.
At least he was honest, lol