jquery源码学习--iceDog

 /**
  * @FileName   :    iceDog
  * @Author     :    PheonixHkbxoic
  * @Mail       :    hkbxoic@gmail.com
  * @DateTime   :    2016-04-23 14:55:33
  * @Version    :    v1.0.0
  * @Description:    Description
  */

 (function(window,undefined){
     var doc = window.document;

     var _iceDog = function(selector){
         return new _iceDog.fn.init(selector);//每次使用_iceDog对象,都是全新的
     };

     //原型
     _iceDog.fn = _iceDog.prototype = {
         //elems : [],//selector? []:_iceDog.prototype,
         init : function(selector){
             this.elems = [];//初始化容器，每次创建的对象都是全新的

             if(selector){
                 if(typeof selector === 'boolean'){
                     this.elems.push(selector==true? true:this);
                 }else if (typeof selector === 'number') {
                     this.elems.push(selector);
                 }else if (typeof selector === 'function') {
                     //用回调函数处理
                     selector.call(this,this);
                 }else if (typeof selector === 'string' ){
                     if(selector.match(/^\#\S{3,}/)){//#id
                         this.elems.push(doc.getElementById(selector.substring(1)))
                     }else if (selector.match(/^\.\S{3,}/)) {//.class
                         var elarr = doc.all;
                         for (var i = 0; i < elarr.length; i++) {
                             if (elarr[i].className&&elarr[i].className.indexOf(selector.substring(1))!=-1) {
                                 this.elems.push(elarr[i]);
                             }

                         }
                     }else { //a,
                         var elarr = doc.getElementsByTagName(selector);
                         for (var i = 0; i < elarr.length; i++) {
                             this.elems.push(elarr[i]);
                         }
                     }
                 }else if (selector.nodeType) {
                     this.elems.push(selector);
                 }

                 return this;
             }else{//handle $(),$(""), $(null), $(undefined), $(false)
                 return this;
             }

         },
         css : function(attr,value){
             if (arguments.length == 1) {
                 var attrvalue = [];
                 for (var i = 0; i < this.elems.length; i++) {
                     attrvalue[i] = this.elems[i].style[attr] ;
                 }
                 return attrvalue;
             }else if (arguments.length == 2) {
                 for (var i = 0; i < this.elems.length; i++) {
                     this.elems[i].style[attr] = value;
                 }
                 return this;
             }else{
                 throw new Error('the length of css arguments is between 1 and 2 !');
             }
         },
         each:function(callback,args){//应该用回调函数
             return _iceDog.each(this.elems,callback,args);
         }
     };

     //原型传递
     _iceDog.fn.init.prototype = _iceDog.prototype;

     /**
       * 将要添加的静态方法或属性，复制给_iceDog 类
       * 将要添加的对象方法或属性，复制给_iceDog.fn,即_iceDog.prototype原型，那么_iceDog 对象也就拥有了这些方法和属性
       */
     _iceDog.extend = _iceDog.fn.extend = function(){
         var target = arguments[0]||{};
         for(name in target){
             this[name] = target[name];
         }
         return target;
     };

     //_iceDog 类要添加的静态方法或属性
     _iceDog.extend({
         version:'iceDog v1.0.0',
         showVersion:function(){
             alert(this.version);
             return this.version;
         },
         each:function(obj,callback,args){//应该用回调函数
             var name,length = obj.length;
             for(name in obj){
                 if(callback.call(obj[name],name,obj[name],args)===false){
                     break;
                 }
             }
         }
     });

     //_iceDog对象的属性或方法
     _iceDog.fn.extend({
         elems:[],
         get:function(index){
             return arguments.length==1?this.elems[index]:this.elems;
         },
         show:function(){
             for(var i=0;i<this.elems.length;i++){
                 this.elems[i].style.display = 'block';
             }
             return this;
         },
         hide:function(){
             for(var i=0;i<this.elems.length;i++){
                 this.elems[i].style.display = 'none';
             }
             return this;
         },
         addClass:function(className){
             for(var i=0;i<this.elems.length;i++){
                 this.elems[i].className += ' '+className;
             }
             return this;
         },
         removeClass:function(className){
             for(var i=0;i<this.elems.length;i++){
                 var clzz = this.elems[i].className;
                 clzz = clzz.replace(new RegExp(className),'');
                 clzz = clzz.replace(/\ $/,'');
                 this.elems[i].className= clzz;
             }
             return this;
         },
         val:function(val){                                    //获取或设置表单元素值
             if (arguments.length==1) {
                 for(var i=0;i<this.elems.length;i++){
                     if(this.elems[i].hasAttribute('value')){
                         this.elems[i].value = val;
                     }
                 }
                 return this;
             }
             var values = [];
             for(var i=0;i<this.elems.length;i++){
                 if(this.elems[i].hasAttribute('value')){
                     var value = this.elems[i].value;
                     if(value){
                         values.push(value);
                     }
                 }
             }
             return values;
         },
         text:function(textValue){                                    //获取或设置文本节点内容
             if (arguments.length==1) {
                 for(var i=0;i<this.elems.length;i++){
                     this.elems[i].appendChild(doc.createTextNode(textValue));
                 }
                 return this;
             }
             var texts = [];
             for(var i=0;i<this.elems.length;i++){
                 if(this.elems[i].nodeType == 1){//是元素节点，才有文本子节点
                     var text = [];
                     var childNodes = this.elems[i].childNodes;
                     for (var i = 0; i < childNodes.length; i++) {
                         if(childNodes[i].nodeType == 3){
                             //FireFox浏览器，空格和回车会认为是文本节点。需额外处理
                             childNodes[i].nodeValue = childNodes[i].nodeValue.replace(/\s+/,'');
                             if(childNodes[i].nodeValue){
                                 text.push(childNodes[i].nodeValue);
                             }
                         }
                     }
                     texts.push(text);
                 }
             }
             return texts;
         },
         html:function(tag){                                    //获取或设置节点内容
             if (arguments.length==1) {
                 for(var i=0;i<this.elems.length;i++){
                     this.elems[i].innerHTML=tag;
                 }
                 return this;
             }
             for(var i=0;i<this.elems.length;i++){
                 this.elems[i] = this.elems[i].innerHTML;
             }
             return this.elems;
         },
         append:function(node,createText){
             if (arguments.length!=0) {
                 if(!node.nodeType){    //如果不是节点
                     if(createText&&createText==true){
                         node = doc.createTextNode(node);    //创建文本节点
                     }else{
                         node = doc.createElement(node);        //创建元素节点
                     }
                 }
                 for(var i=0;i<this.elems.length;i++){
                     this.elems[i].appendChild(node);
                 }

                 //对于<div class='clzz'></div>该如何处理？
             }
             return this;
         }
     });

     window.$ = window.iceDog = _iceDog;
 })(window);
 /*
     console.log(_iceDog());
     console.log(_iceDog('#box'));
     console.log(_iceDog('#box').css('color','red').css('color'));
     console.log(_iceDog);
     // console.log(_iceDog.show());//不能运行。。。
     console.log(_iceDog('#pox').show());
     console.log(_iceDog('p').show());

     console.log(_iceDog('.boxpox'));
     console.log(_iceDog('.beblue').css('color','blue').css('color'));
     */

 /*
 (function(window){
     var doc = window.document;
     _iceDog = function(selector){
         var obj = {
             elems : selector? []:_iceDog.prototype,
             init : function(selector){
                 if(selector){
                     if(selector.match(/^\#\S{3,}/)){//#id
                         this.elems.push(doc.getElementById(selector.substring(1)))
                     }else if (selector.match(/^\.\S{3,}/)) {//.class
                         var elarr = doc.all;
                         for (var i = 0; i < elarr.length; i++) {
                             if (elarr[i].className&&elarr[i].className.indexOf(selector.substring(1))!=-1) {
                                 this.elems.push(elarr[i]);
                             }

                         }
                     }else { //a,<a>
                         var elarr = doc.getElementsByTagName(selector);
                         for (var i = 0; i < elarr.length; i++) {
                             this.elems.push(elarr[i]);
                         }
                     }
                     return this;
                 }else{
                     return this;
                 }

             },
             css : function(attr,value){
                 if (arguments.length == 1) {
                     var attrvalue = [];
                     for (var i = 0; i < this.elems.length; i++) {
                         attrvalue[i] = this.elems[i].style[attr] ;
                     }
                     return attrvalue;
                 }else if (arguments.length == 2) {
                     for (var i = 0; i < this.elems.length; i++) {
                         this.elems[i].style[attr] = value;
                     }
                     return this;
                 }else{
                     throw new Error('the length of css arguments is between 1 and 2 !');
                 }
             },
             show:function(){
                 return this.elems;
             },
             each:function(fun){//应该用回调函数
                 for (var i = 0; i < this.elems.length; i++) {
                     alert(this.elems[i]);
                 }
             }
         };
         _iceDog.prototype = obj.init.prototype;//_iceDog.prototype = obj.init.prototype = obj;

         return obj.init(selector);
     };
     window.$ = window.iceDog = _iceDog;
 })(window);
 */