[Peter Knolle] The Visualforce framework abstracts away a lot of the heavy lifting of the underlying JavaScript necessary for Visualforce pages to function correctly. Visualforce developers can produce a whole lot of JavaScript without ever actually writing a single line of it by making use of built-in features like apex:commandButton, apex:actionFunction, etc. However, it is becoming more commonplace for Visualforce developers to write their own custom JavaScript or entire applications that are largely JavaScript-centric. This post contains some useful JavaScript tips for Visualforce developers. – Learn more at Peter Knolle