javascript面向对象编程和对象访问控制实例

　　var Cat = {

　　　　name : '',

　　　　color : ''

　　}

　　var cat1 = {}; // 创建一个空对象

　　　　cat1.name = "大毛"; // 按照原型对象的属性赋值

　　　　cat1.color = "黄色";

　　var cat2 = {};

　　　　cat2.name = "二毛";

　　　　cat2.color = "黑色";

function Cat(name, age){
    var name = name;
    this.age = age||1;
    this.setName = function(sName){
        this.name = sName;
    }
    this.getName = function(){
        return this.name;
    }
    this.setAge = function(nAge){
        this.age = nAge;
    }
    this.getAge = function(){
        return this.age;
    }
}
 
Cat.prototype.say = function(){
    console.log('I am '+this.name+', I am '+this.age);
}
 
var kk = new Cat('kk');
console.log(kk.name);//undefined @private
kk.setName('deeka');
console.log(kk.getName()); // deeka
kk.setAge(2);
console.log(kk.getAge()); // 2
kk.age = 3;
console.log(kk.age);//3 @public
kk.say(); // I am deeka, I am 3