一个类的实例的Javascript数组

Question

在 JS 中，我有一个名为 player 的类，它是:

class player {
    constructor(name) {
        this.name = name;
    }
}

我有它的两个实例，称为 PL1 和 PL2:

const PL1 = new player ('pl1name');
const PL2 = new player ('pl2name');

我还有一个名为 PLAYERS 的数组:

let PLAYERS = [];

现在，问题是如何创建一个包含类 player 的所有实例的数组？

我知道我可以使用 PLAYERS.push(PLn) 手动执行此操作；但我正在寻找一种以某种方式自动执行此操作的方法。有内置函数吗？我应该使用循环吗？

Answer 1

您可以创建一个类作为玩家的容器类。这将允许容器创建玩家并管理他们。 Players 类可以公开一个接口(interface)，从而可以轻松地与玩家单独或作为一个整体进行交互。像这样的东西可能是一个好的开始，可以用更多的功能或不同的组织来填充:

// An individual player. Holds properties and behavior for one player
class Player {
  constructor(name) {
      this.name = name;
  }
  play() {
    console.log(this.name, "plays")
  }
}

// Class that holds a collection of players and properties and functions for the group
class Players {
  constructor(){
    this.players = []
  }
  // create a new player and save it in the collection
  newPlayer(name){
    let p = new Player(name)
    this.players.push(p)
    return p
  }
  get allPlayers(){
    return this.players
  }
  // this could include summary stats like average score, etc. For simplicy, just the count for now
  get numberOfPlayers(){
      return this.players.length
  }
}

let league = new Players()
league.newPlayer("Mark")
league.newPlayer("Roger")

// list all the players
console.log(league.numberOfPlayers + " Players)
console.log(league.allPlayers)


// make them do something
league.allPlayers.forEach(player => player.play())