Question

这是我的代码：

var Quo = function(string) {            //This creates an object with a 'status' property.
    this.status = string;
};

Quo.prototype.get_status = function() { //This gives all instances of Quo the 'get_status' method, 
                                        //which returns 'this.status' by default, unless another 
                                        //instance rewrites the return statement.
    return this.status;
};

var myQuo = new Quo("confused");        //the `new` statement creates an instance of Quo().

document.write(myQuo);

当我运行此代码时，结果为[object Object]。由于get_status()已附加到Quo prototype，因此不应调用Quo的实例来调用该方法吗？我在这里错过了什么？

Answer 1

不应该是document.write(myQuo.get_status());吗？

<强>更新

另一种选择是覆盖toString方法，如下所示：

Quo.prototype.toString = function() {
    return this.status;
};

将公共方法附加到原型

1 个答案: