The hidden quality of the YUI library is the ability to control and test what you are doing at any point in the process. This session breaks down the internal events of YUI, how to control animations, and what you need to know about the browser instance you apply your code to. With the classic "Web site" dying out more and more, we need to make sure our scripts and widgets are as open as possible to outside applications. This talk shows you how YUI is built to allow for integration with other scripts.

In this session you learn why:

• Custom events are a great idea;
• Animation goes hand-in-hand with moderation;
• The user owns the interface;
• Components-on-demand is a good plan.

This session was recorded at The Ajax Experience conference in Boston, Massachusetts, September 29 - October 1, 2008.