JQuery 1.7.2 API中bind(),on(),live()和delegate()方法的使用
jQuery.fn.extend({
on:function(types,selector,data,fn,/*INTERNAL*/one){
varorigFn,type;
//Typescanbeamapoftypes/handlers
if(typeoftypes==="object"){
//(types-Object,selector,data)
if(typeofselector!