The Yahoo! YUI is an incredibly feature-rich JavaScript library with a LOT of functionality but getting your head around all of those features can be tough. The YUI team wants to help developers get up and running more quickly and announced yesterday the release of SimpleYUI; a basic and more streamlined version of the YUI library.
SimpleYUI will contain basic DOM access and manipulation including support for CSS 3 selectors in the selector engine, animations via the new transition module, the event system, Ajax and JSON support.
The great thing is that when you're ready to leverage more advanced features like managed attributes and custom events, you still have the ability to do on-demand loading just like you'd expect from the full-featured version of YUI. This includes any YUI 2 or 3 component or YUI 3 Gallery module.
