1 (function(window,document){
  2         var DOC = document,YQ = window.$ =function(selector){
  3                 if(!selector){
  4                         return YQ.elems
  5                 }
  6                 typeof selector ==='string'&&(selector = getElements(selector));//简单的判断是dom对象，还是字符串，字符串则开始选择器
  7                 return superElems(selector);
  8         }
  9         function superElems(elems){
 10                 if(elems){
 11                         if(elems.nodeType){//判断是否为DOM
 12                                 if(typeof elems.getAttribute!=="unknown"){
 13                                         var temp = elems;
 14                                         elems =[];
 15                                         elems[0]= temp;//把本身作为超级对象的第一个，其他方法进行扩展
 16                                         for(var i in YQ.elems){
 17                                                 //扩展对象，保留已有的方法
 18                                                 typeof elems[i]==="undefined"&&(elems[i]= YQ.elems[i])
 19                                         }
 20                                 }
 21                         }else{//如果为对象，则对对象进行扩展
 22                                 elems = YQ.extend(elems,YQ.elems);
 23                         }
 24                 }
 25                 return elems;
 26         }
 27         function getElements(selector){
 28                 //伟大的选择器，可以使用sizzle
 29                 var dom = DOC.getElementById(selector);//……
 30                 return dom;
 31         }
 32         YQ.tool={
 33                 isFunction:function(obj){//简单的判断是否为函数
 34                         return obj &&typeof obj ==="function";
 35                 }
 36         }
 37         //此处为超级对象一些扩展
 38         YQ.elems={
 39                 each:function(dom,callback){//强大的each
 40                         if(YQ.tool.isFunction(dom)){
 41                                 arguments.callee.call(this,this,dom);
 42                         }else{
 43                                 for(var i =0, len = dom.length; i < len; i++){
 44                                         callback.call(dom, i, dom[i]);
 45                                 }
 46                         }
 47                         returnthis;
 48                 },
 49                 find:function(selector){
 50                         var doms =[];
 51                         this.each(function(i,dom){
 52                                 doms.push(YQ.DOM.find(selector,dom));
 53                         })
 54                         return superElems(doms);
 55                 }
 56         }
 57         YQ.each= window.Array.prototype.each= YQ.elems.each;//扩展Array
 58         YQ.extend=function(subClass,baseClass){
 59                 for(var i in baseClass){
 60                         subClass[i]= baseClass[i];
 61                 }
 62                 return subClass;
 63         }
 64         YQ.AJAX={}
 65         YQ.CSS={
 66                 names:{
 67                         'float':'cssFloat',//区分cssFloat or styleFloat
 68                         opacity:'opacity'
 69                         //……
 70                 }
 71         }
 72         YQ.browser={
 73                 isIE:'',
 74                 isFirefox:'',
 75                 version:'3.6'
 76                 //……
 77         }
 78         YQ.event={
 79                 names:{
 80                         mousewheel:YQ.browser?"DOMMouseScroll":"mousewheel"
 81                 },
 82                 fix:function(e){
 83                         if(e && e.clone)return e;//如果已经处理了，直接返回
 84                         e = window.event|| e;//event是全局变量
 85                         var fixE ={
 86                                 clone:true,
 87                                 stop:function(){//冒泡
 88                                         if(e&&e.stopPropagation){
 89                                                 e.stopPropagation();
 90                                         }else{
 91                                                 e.cancleBubble=true
 92                                         }
 93                                 },
 94                                 prevent:function(){//默认动作
 95                                         if(e && e.preventDefault){
 96                                                 e.preventDefault();
 97                                         }else{
 98                                                 e.returnValue=false;
 99                                         }
100                                 },
101                                 target:e.target|| e.srcElement,
102                                 x:e.clientX|| e.pageX,
103                                 Y:e.clientY|| e.pageY,
104                                 //鼠标滚轮事件统一处理
105                                 wheel:e.wheelDelta/120||-e.detail/3
106                         }
107                         return fixE;
108                 }
109         }
110         YQ.DOM={
111                 find:function(selector,parentDom){
112                         //do something
113                 }
114         }
115 })(window,document);