Javascript：对对象进行排序

function Player() {
  var score;

  this.getScore = function() { return score; }
  this.setScore = function(sc) { score = sc; }
}

function compare(playerA, playerB) {
  return playerA.getScore() - playerB.getScore();
}

var players = [];

players['player1'] = new Player();
players['player2'] = new Player();

Array(players).sort(compare);

我有与上面类似的代码。当我使用调试器单步调试代码时，比较函数永远不会被调用，并且数组不会被排序。我不确定我的代码有什么问题？

它不是排序，因为您已经指定了数组中变量所属的键。排序只会移动整数值键上的对象。如果您按如下方式创建数组，您应该会看到排序工作：

var players = [new Player(), new Player()];

当然，它不会很有效，因为你既没有可以排序的分数，也没有识别它们的方法。这会做到这一点：

function Player(name, score) {
  this.getName = function() { return name; }
  this.getScore = function() { return score; }
  this.setScore = function(sc) { score = sc; }
}

function comparePlayers(playerA, playerB) {
  return playerA.getScore() - playerB.getScore();
}

var playerA = new Player('Paul', 10);
var playerB = new Player('Lucas', 5);
var playerC = new Player('William', 7);

var players = [playerA, playerB, playerC];

for (var i = 0; i < players.length; i++)
    alert(players[i].getName() + ' - ' + players[i].getScore());

players.sort(comparePlayers);

for (var i = 0; i < players.length; i++)
    alert(players[i].getName() + ' - ' + players[i].getScore());

希望有帮助。