好好学一遍JavaScript 笔记(二)——encode、数组、对象创建(7)

             * 结果所有函数都只创建一次、而每个对象都具有自己的对象属性实例。  
             */ 
            function Car(sColor,iDoors,iMpg){ 
                this.color = sColor; 
                this.doors = iDoors ; 
                this.mpg = iMpg ; 
                this.array = new Array(1,2); 
                this.showColor = function(){ 
                    alert(this.color); 
                }; 
            }  
            Car.prototype.array = function (){ 
                alert(this.color);   
            };    
            var oCar1 = new Car("red",5,33); 
            var oCar2 = new Car("blue",6,23); 
            oCar1.array.push(4,9); 
            alert(oCar1.array);   
            alert(oCar2.array); 

动态原型方法：
[javascript]
/**
             * 动态原型方法
             */ 
            function Car(sColor,iDoors,iMpg){ 
                this.color = sColor; 
                this.doors = iDoors ; 
                this.mpg = iMpg ; 
                if(typeof Car._initialized == "undefined"){