Question

我无法弄清楚如何从主对象

创建多个对象

以下是我要做的事情：

var player = {
    var totalScore = 0;
    var playing = true;
    function checkScore() {
       if (totalScore >= 100) {
            playing = false;
       }
    };
};

player playerAI = new player();
player playerOne = new player();

Answer 1

我已在 JavaScript

中将您的代码重写为构造函数

function Player() {
    this.totalScore = 0; // `this` will refer to the instance
    this.playing = true;
}
Player.prototype.checkScore = function () { // the prototype is for shared methods
    if (this.totalScore >= 100) {           // that every instance will inherit
        this.playing = false;
    }
};

var playerAI = new Player(),
    playerOne  = new Player();

但是，您的某些代码模式看起来并不像 JavaScript ，您确定自己并未使用其他语言吗？（比如Java）

Answer 2

试试这个：

var player = function() {
    this.totalScore = 0;
    this.checkScore = function() {
        if (totalScore >= 100) {
        playing = false;
    }    
};
player playerAI = new player();
player playerOne = new player();

Answer 3

// Define a constructor function
var Player = function () {

    // This acts as public property
    this.playing = true;

    // This acts as public method
    this.isPlaying = function (){
        return this.playing;
    };
};

用法：

var player1 = new Player();
console.log(player1.isPlaying());

注意：最好将方法声明为Player.prototype对象的属性。（节省内存）

Player.protoype.isPlaying = function (){
    return this.playing;
};

Answer 4

我不确定这是不是你想要的：

function player() {
    var totalScore = 0;
    var playing = true;
    return {
        checkScore: function checkScore() {
            if (totalScore >= 100) {
                playing = false;
            }
        }
    }
};

var playerAI = new player();
var playerOne = new player();

使用相同的变量创建多个对象

4 个答案: