优化

http://www.html5rocks.com/en/tutorials/developertools/part1/

 jQuery扩展

http://www.cnblogs.com/ellisonDon/archive/2012/08/12/2634503.html

 http://book.51cto.com/art/201204/327190.htm

http://caanel.blog.163.com/blog/static/182468427201371532710180/

http://www.cnblogs.com/newsouls/archive/2011/10/27/2226849.html