What exactly would you put in this almanac?
CSS is a language where there are pre-defined selectors, attributes and values, so it would make a lot of sense to list out each of these and describe them.
It’s a bit hard to explain, but it’s not really possible to put Javascript into this format, because the language structure is completely different, and isn’t based on pre-defined selectors.
I’ve found a great resource for learning/and refreshing your Javascript to be this:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript