Question

关于JavaScript骰子游戏的Stack Overflow上有很多帖子，但我找不到能回答我问题的帖子。此代码改编自CodeCademy：

function rollSingleDice() {
    return Math.floor(Math.random()*6+1);
}

function rollDice(player) {
var score = 0;
var roll1; var roll2;
var playerScore = player.getScore();
    do {
        roll1 = rollSingleDice();
        roll2 = rollSingleDice();
    } while (roll1 === roll2);

    score = roll1 + roll2;
    player.addToScore(score);

    if (roll1 === roll2) {
        console.log(player.name + "'s current score is: " +
        playerScore);
    } else {
        console.log(player.name + "'s current score is: " +
        playerScore);
    }
   // return score;
}


function Player(name) {
  this.name = name;
  var score = 0; // this is a private attribute
  this.addToScore = function(points) {
    score = score + points;
  };
  this.getScore = function() {
    return score;
  };
}

var player1 = new Player("Bobby");
rollDice(player1);

我已多次修改do ... while循环，我得到的唯一输出如下：

Bobby's current score is: 0

有人可以指出我正确的方向吗？谢谢。

Answer 1

您获取玩家得分的值并将其保存在＆＃34; playerScore＆＃34;变量。但是，之后您不会更新该值，因此当您稍后点击console.log()语句时，它仍然具有其原始值。更改console.log来电，以便在播放器上记录调用.getScore()的结果。

    console.log(player.name + "'s current score is: " + player.getScore());

Answer 2

在记录玩家得分之前，请务必更新

 function rollDice(player) {
 var score = 0;
 var roll1; var roll2;
 var playerScore = player.getScore();
 do {
    roll1 = rollSingleDice();
    roll2 = rollSingleDice();
} while (roll1 === roll2);

score = roll1 + roll2;
player.addToScore(score);

//Add this line in
playerScore = player.getScore();

if (roll1 === roll2) {
    console.log(player.name + "'s current score is: " +
    playerScore);
} else {
    console.log(player.name + "'s current score is: " +
    playerScore);
}
// return score;
}

快乐的编码！如果您有任何问题，请发表评论。

JavaScript骰子游戏返回0

2 个答案: