“I'm giving away my pass to the jQuery Conference 2008 in Boston, September 28th. Was planning on being there but reality intervened. Full program here: http://jquery.com/blog/2008/08.... First person to send an email to thomas at broxrost.com gets it.”
“Is there any particular reason to choose one JS API library over another? Are they interchangeable in any way? And do most people just stick with one or use whatever is best for the functionality at hand?”
GWT is made for Java developers. Yahoo has a lot of cool UI stuff. jQuery is my personal fav. prototype.js + scriptaculous (UI stuff) and moo is also nice. Some plugins are written for specific libraries, so if you really need that plugin might have to go with specific library. A lot of them have the same functionality, but aren't exactly interchangeable in the sense that you can't plug one out for the other and expect the code to still work without some code modification. - Hao Chen