jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. If you're new to jQuery UI, you might want to check out our main site for more information and full demos. If you're new to jQuery, you might also be interested in the Learn jQuery tutorials.

This site provides API documentation for jQuery UI 1.9. If you're working with jQuery UI 1.8, you can find the API documentation on api.jqueryui.com/1.8/. However, we would encourage you to upgrade to jQuery UI 1.9 in order to receive the best support and take advantage of recent bug fixes and enhancements. Check out the release announcement and upgrade guide to find out more about jQuery UI 1.9.

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jQuery UI 1.9 supports jQuery 1.6 and newer.