One of YAML’s big problems nowadays is its Perl-derived data model that (happily) obscures any distinction between strings and numbers (let alone integer/float!). Some parsers attempt to coerce such a distinction out, but in YAML itself they’re all just “scalars”. That makes it an odd fit in a lot of modern applications, which expect more detailed typing of scalar values.

Caio Chassot has created a godsend of a Javascript library for abstracting event handling and all sorts of other goodness:

http://v2studio.com/k/code/lib/