javascript - 动态设置 Javascript 原型(prototype)

Question

我正在尝试使用 new Function(...) 动态设置原型(prototype)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();
    }
}

用例:我有一个微服务，它将算法存储为资源，然后将其传递到与 2 种算法作斗争的模拟器中。

当我尝试这个时，this.prototype 是 undefined。我认为可能是这种情况的唯一原因是因为 AI 对象直到构造函数执行完毕后才完全定义。

我将如何设置原型(prototype)函数，就像我在这里尝试做的那样？

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，您已经拥有了正在创建的对象的实例，因此您可以简单地修改实例的方法而无需触及原型(prototype):

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();
    }
}