I think the other poster meant 3rd party libraries, rather than the runtime. That said, the docs on (most of) the libraries I have used are generally pretty go

I think the other poster meant 3rd party libraries, rather than the runtime. That said, the docs on (most of) the libraries I have used are generally pretty good. * Prototype - excellent docs (but library since overshadowed by jQuery) * jQuery - initially the docs were hard to follow, but they seem to have gotten better * Angular - good enough docs, and plenty of books on the larger concepts of how things fit together * moment.js - excellent docs * validatejs - excellent docs * Ramdajs - generally excellent docs, but I am less familiar with some of the FP concepts used in a few cases. The quality on some of the jQuery and Angular plugins varies a bit, admittedly.