dojo不是比较激进，是非常激进 Unbeatable JavaScript Tools Dojo saves you time, delivers powerful performance, and scales with your development process. It’s the toolkit experienced developers turn to for building great web experiences.
mootools稍微含蓄点 MooTools is a compact, modular, Object-Oriented JavaScript framework designed for the intermediate to advanced JavaScript developer. It allows you to write powerful, flexible, and cross-browser code with its elegant, well documented, and coherent API.
MooTools code respects strict standards and doesn't throw any warnings. It's extensively documented and has meaningful variable names: a joy to browse and a snap to understand.
jquery的介绍最到位 jQuery is a new kind of JavaScript Library.
jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.