JQuery简单模仿
转 http://www.cnblogs.com/baochuan/archive/2012/04/30/2473771.html

//模仿JQuery的方式(function(){var yQuery = (function(){var yQuery = function(){return yQuery.fn.init();};yQuery.fn = yQuery.prototypy = {init : function(){return this;}}yQuery.extend = yQuery.fn.extend = function(){var options , name , src , copy,target = arguments[0] || {},i = 1,length = arguments.length;if(length === i){target = this;--i;}for(; i < length ; i ++ ){if((options = arguments[i]) != null){for(name in options){src = target[name];copy = options[name];if(src === copy){//检查在目标对象中src属性这个值是否一致continue;}if(copy!==undefined){target[ name ] = copy;}}}}return target;}return yQuery;})();window.yQuery = window.$ = yQuery();})();$.ui = $.ui || {};$.extend($.ui , {name2:"eee" , getName:function(){return this.name2;}});console.log($.ui.getName());

(function(){var jQuery = function(){return jQuery.fn.init();};jQuery.fn = jQuery.prototype = {init : function(){ return this;}};jQuery.fn.extend = function(){var src , copy , name , options ,target = arguments[0] || {};i = 1,length = arguments.length;if(length===i){target = this;i--;}for( ; i <length ; i++){if((options = arguments[i])!=null){for(name in options){src = options[ name ];copy = target[ name ];if(src===copy){continue;}if(src!==undefined){target[ name ] = src;}}}}return target;};window.jQuery = window.$ = jQuery();return jQuery;})();$.ui = $.ui || {};$.extend($.ui , {name2:"eee"}, {getName:function(){return this.name2}});console.log($.ui.getName());