javascript模块化

http://web.jobbole.com/83761/
http://www.tuicool.com/articles/rqEjEv
http://www.codeceo.com/article/javascript-modular.html
http://caibaojian.com/module-javascript.html
https://my.oschina.net/chenzhiqiang/blog/129783
http://www.jianshu.com/p/349921b16415
http://www.hbjjrb.com/Jishu/Javascript/201408/726476.html