[jquery-delegate] iphone_4s _iphone _5c_中不兼容jQuery delegate 事件(does not wok)

1. jQuery .on() and .delegate() doesn't work on iPad

http://stackoverflow.com/questions/10165141/jquery-on-and-delegate-doesnt-work-on-ipad

2. Click event delegation on the iPhone

http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html