AMD研究，组件的动态加载。
研究了一下dojo的ADM。明白组件的加载机制了。
dom.js
on.js<!DOCTYPE html><html><head><title></title><meta charset='utf-8'><script src='fu/fu.js'></script><script type="text/javascript">fu.require(["_base/dom","_base/string","_base/on"], function(dom, string, on){console.log(dom.dom);console.log(string.string);console.log(on.on);});</script></head><body></body></html>
