JavaScript Libraries (Kings of Code)

The document discusses various JavaScript libraries including Prototype, jQuery, Yahoo UI, and Dojo. It compares the libraries across categories like core functionality, widgets, architecture, licensing, browser support, development, and documentation. The core functionality discussed includes DOM manipulation, events, AJAX, and animations. Popular widgets provided by the libraries include drag and drop, trees, grids, modal dialogs, tabbed panes, menus/toolbars, datepickers and sliders. The document also covers considerations for the libraries like licensing, browser support, ongoing development, and quality of documentation and tutorials.