Question

我正在尝试使用new Function(...)动态设置原型函数。我尝试了以下（es6）：

export default class AI {

    constructor(algObj, player) {
        this.player = player;
        this.algObj = algObj;

        //create the shoot and placeShips prototypes form the this.algObj property
        this.prototype.initialize   = new Function(this.algObj.initialize);
        this.prototype.shoot        = new Function(this.algObj.shoot);
        this.prototype.placeShips   = new Function(this.algObj.placeShips);

        this.initialize();
    }
}

使用案例：我有一个微服务，将算法存储为资源，然后将其传递到与2种算法作战的模拟器中。

当我尝试此操作时，this.prototype为undefined。我可以认为这种情况的唯一原因是因为AI对象在构造函数执行完之后才完全定义。

我将如何设置原型功能，就像我在这里尝试一样？

更新：

this.__proto__.initialize   = new Function(this.algObj.initialize);
this.__proto__.shoot        = new Function(this.algObj.shoot);
this.__proto__.placeShips   = new Function(this.algObj.placeShips);

Answer 1

当调用构造函数时，您已经拥有了要创建的对象的实例，因此您只需修改实例的方法而无需触及原型：

export default class AI {

    constructor(algObj, player) {
        this.player = player;
        this.algObj = algObj;

        //create the shoot and placeShips prototypes form the this.algObj property
        this.initialize   = new Function(this.algObj.initialize);
        this.shoot        = new Function(this.algObj.shoot);
        this.placeShips   = new Function(this.algObj.placeShips);

        this.initialize();
    }
}

动态设置Javascript原型

1 个答案: