js面向对象_基于组合的方式实现继承

js面向对象_基于组合的方式实现继承

<script type="text/javascript">
    /**
     * 组合的实现方式是属性通过伪造的方式实现，方法通过原型链的方式实现
     * 注意内存模型
     */
    function Parent(name) {
        this.color = ["red","blue"];
        this.name = name;
    }
    Parent.prototype.ps = function() {
        alert(this.name+"["+this.color+"]");
    }

    function Child(name,age) {
        //已经完成了伪造
        Parent.call(this,name);
        this.age = age;
    }
    Child.prototype = new Parent();
    Child.prototype.say = function() {
        alert(this.name+","+this.age+"["+this.color+"]");
    }

    var c1 = new Child("Leon",22);
    c1.color.push("green");
    c1.say();
    c1.ps();
    var c2 = new Child("Ada",23);
    c2.say();
    c2.ps();
    </script>