JQuery : Split button widgets

* easyui is a collection of user-interface plugin based on jQuery.
* using easyui you don't need to write lots of javascript code, you usually define user-interface by writing some HTML markup.
* easyui is very easy but powerful

© jQuery EasyUI: Welcome to jQuery EasyUI;

Here goes the link to sources of jquery-easyui. And the split button sources itself.

jQuery UI features low-level effect and interaction API's (like drag and drop) as well as full-featured and highly configurable ready-to-use widgets.

© jQuery UI - Home;

Same here, link to the sources, and then the split-button sources (are part of button widget).