These are scribbles written for the sake of increasing learning retention. To me, writing down my own thought after experiencing something with 5 senses is a good exercise for mental strength. Don't believe me, please.
It's very important for the one who build user-facing features on top of DOM and Web API to understand event propagation, bubbling, and capturing. Read on.
I don't have Mac, so doing the actual challenge might be frustrating. However, playing (copy-pasting) with Google Map API doesn't leave bad taste in my mouth. Read on.