https://github.com/paulmillr/console-polyfill
https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills
http://addyosmani.com/blog/writing-polyfills/
https://github.com/es-shims/es5-shim
js polyfill , to developing the cross browser js
原文：http://www.cnblogs.com/zyip/p/4451099.html