Being humans, we rarely learn things linearly. No one begins their JavaScript journey by reading

line-by-line like a pedantic masochist.

Instead we all cobble together a good-enough understanding, leaving holes here and there to fill in later.

So far I've stumbled along without 100% grokking prototypical inheritance, or how call, apply, and bind work on functions.

It's fine. Stuff mostly works. Until it doesn't ¯_(ツ)_/¯

But at some point, it's useful to stop stumbling about and peek back at those holes.

's egghead course on

Advanced JavaScript Foundations

that was exactly that hole-filling opportunity for me.

As usual, I drew some notes...

Want more illustrated notes on web development?

Take a look at

,

Building Custom React Hooks

or

Fixing Common Git Mistakes