"This utility library helps manage XMLHttpRequest (commonly referred to as AJAX) transactions in a cross-browser fashion, including integrated support for form posts, error handling and callbacks," said a document describing the library on Yahoos Web site.
The Yahoo library supports animation. With the Yahoo User Interface Library, developers can "create cinematic effects on their pages by animating the position, size, opacity or other characteristics of page elements," the document said.
Moreover, "The Yahoo UI Library Controls provide highly interactive visual design elements for your Web pages," the Yahoo document said. "These elements are created and managed entirely on the client side and never require a page refresh."
In addition, all the components in the Yahoo User Interface Library "have been released as open source under a BSD [Berkeley Software Distribution] license and are free for all uses," the Yahoo document said.
Another vendor, TIBCO Software, of Palo Alto, Calif., on Feb. 13 announced the availability of TIBCO General Interface version 3.1 Professional Edition, which features a new licensing and pricing model.
With the version 3.1 Professional Edition, TIBCO General Interface is being made available to build and test AJAX-enabled applications for free, said Kevin Hakman, director of product marketing for TIBCOs General Interface.
"Were very excited about this particular release," Hakman said. "AJAX has been taking off in the enterprise."