javascript創建子類

下面的例子BosiMao繼承基類Cat。

    //基類
    function Cat(){
        this.name = "zch";
    }
    //子類的構造函數
    function BosiMao(){}
    //繼承
    BosiMao.prototype = new Cat();
    BosiMao.prototype.constructor = BosiMao;
    BosiMao.prototype.speak = function(){
        alert(this.name + "is a MosiMao");
    }

    var bosiCat = new BosiMao();
    bosiCat.speak();

</script>