Forums

No. Y.Base.create copies functions into the newly created constructor's prototype. So everything you use in "px" is public. There is no easy way in JavaScript to have private/protected instance data that can be accessed from prototype methods (if you're interested, last weak I posted a gist with a somewhat convoluted way of doing it: https://gist.github.com/2901426).

In YUI there is a convention to mark private/protected methods with an "_" prefix and use YUIDoc to declare if it's private or protected.

Note that there are a few places where closure-scoped variables (effectively "static private" variables) have made it very difficult to override specific YUI functionality.

It's been my experience that in JS, unless you have a really good reason to make something private, you shouldn't sweat exposing data.