Aspects of the API that were changed in the corresponding version of jQuery. API changes in jQuery 1.8.0 dealt primarily with animations and the removal of some methods such as deferred.isResolved(), deferred.isRejected(), $.curCSS(), $.attrFn(), and $(element).closest(Array) returning Array.

For more information, see the Release Notes/Changelog at http://blog.jquery.com/2012/08/09/jquery-1-8-released/