Javascript 更多的石头剪刀

我刚刚开始，我在构建RPS程序时遇到了一些问题。我应该遵循隐藏注释中提供的说明，我只是不明白我应该如何使用getPlayerMovemove和getComputerMovemove这两个函数

如果加载到index.html并通过浏览器中的控制台播放，我可以让程序正常工作，但如果使用repl，则无法正常工作

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在这里，您可以定义您所说的getWinner函数

var getWinner = function(playerMove, computerMove) { ... }

这将在浏览器中工作，因为变量的默认范围是窗口对象。因此，在定义的上下文之外声明的变量被分配给窗口对象

当在这样的终端中运行时，我不确定默认的作用域是什么，或者是否存在这样的作用域，这样函数在声明之后可能就不存在了

对我有效的解决方案是将上述行更改为

function getWinner(playerMove, computerMove) { ... }

希望这对你有用。我会尝试找到更多的信息，当我对发生的事情有更具体的解释时，我会更新

编辑： 了解有关函数声明和函数表达式之间的差异的更多信息

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在代码中设置变量getWinner的时间比调用时晚。在调用它之前，尝试移动它的声明。

我已经让它在这里工作，但现在只需使用提示对部分进行微调

玩家的移动现在是硬编码的-你现在需要做的就是通过提示功能得到这个，一切正常

// ////////////////////////////////////////////////
/*   Provided Code - Please Don't Edit   */
/*   IT WORKS!!!          ///////////// */
//////////////////////////////////////////////////
'use strict';

rockPaperScissors();


function randomPlay() {
    var randomNumber = Math.random();
    if (randomNumber < 0.33) {
        return "rock";
    } else if (randomNumber < 0.66) {
        return "paper";
    } else {
        return "scissors";
    }
}
////////////////////////////////////////////////
/*           Write Your Code Below            */
////////////////////////////////////////////////

var playerMove;
var computerMove;
var winner;

function getComputerMove() {
    var move = randomPlay();
    if (move === null || 0) {
        randomPlay();
    } else {
        console.log("The computer chose " + move);
        computerMove = move;
    }
}

function getPlayerMove() {
    // Write an expression that operates on a variable called `move`
    //////////////////// The PLAYER move is hard coded in the line below this one///////////////////////////
    var move = 'scissors';
        console.log("The player chose " + move);
        playerMove = move;
}



function rockPaperScissors() {
    console.log("Let's play Rock, Paper, Scissors.");
    getComputerMove();
    getPlayerMove();   
    getWinner();
}

function getWinner() {
    var winner;
  if ((computerMove === 'rock') && (playerMove === 'rock')) {
     winner = "It's a tie!";
 } else if ((computerMove === 'scissors') && (playerMove === 'rock')) {
    winner = "Player. Congratulations you Win!!!";
} else if ((computerMove === 'paper') && (playerMove === 'rock')) {
     winner = "The computer. You lose bitch!";
  } else if ((computerMove === 'rock') && (playerMove === 'scissors')) {
     winner = "The computer. You lose bitch!";
 } else if ((computerMove === 'scissors') && (playerMove === 'scissors')) {
    winner = "It's a tie!";
} else if ((computerMove === 'paper') && (playerMove === 'scissors')) {
     winner = "The player. You win!";
  }else if ((computerMove === 'rock') && (playerMove === 'paper')) {
     winner = "The player. You win!";
 } else if ((computerMove === 'scissors') && (playerMove === 'paper')) {
    winner = "The computer. You lose bitch!";
} else if ((computerMove === 'paper') && (playerMove === 'paper')) {
     winner = "It's a tie!";
  }
console.log("The winner is: " + winner);
}

---

请更新您的问题，了解更多问题的细节……看起来伊西克的解释是有效的。我试着把函数声明移到调用函数的地方，但这似乎没有什么区别，我想它会把函数引入的地方移到另一个函数调用的地方，但我可能错了。谢谢你，谢谢你提供的参考资料。现在更合理了

// ////////////////////////////////////////////////
/*   Provided Code - Please Don't Edit   */
/*   IT WORKS!!!          ///////////// */
//////////////////////////////////////////////////
'use strict';

rockPaperScissors();


function randomPlay() {
    var randomNumber = Math.random();
    if (randomNumber < 0.33) {
        return "rock";
    } else if (randomNumber < 0.66) {
        return "paper";
    } else {
        return "scissors";
    }
}
////////////////////////////////////////////////
/*           Write Your Code Below            */
////////////////////////////////////////////////

var playerMove;
var computerMove;
var winner;

function getComputerMove() {
    var move = randomPlay();
    if (move === null || 0) {
        randomPlay();
    } else {
        console.log("The computer chose " + move);
        computerMove = move;
    }
}

function getPlayerMove() {
    // Write an expression that operates on a variable called `move`
    //////////////////// The PLAYER move is hard coded in the line below this one///////////////////////////
    var move = 'scissors';
        console.log("The player chose " + move);
        playerMove = move;
}



function rockPaperScissors() {
    console.log("Let's play Rock, Paper, Scissors.");
    getComputerMove();
    getPlayerMove();   
    getWinner();
}

function getWinner() {
    var winner;
  if ((computerMove === 'rock') && (playerMove === 'rock')) {
     winner = "It's a tie!";
 } else if ((computerMove === 'scissors') && (playerMove === 'rock')) {
    winner = "Player. Congratulations you Win!!!";
} else if ((computerMove === 'paper') && (playerMove === 'rock')) {
     winner = "The computer. You lose bitch!";
  } else if ((computerMove === 'rock') && (playerMove === 'scissors')) {
     winner = "The computer. You lose bitch!";
 } else if ((computerMove === 'scissors') && (playerMove === 'scissors')) {
    winner = "It's a tie!";
} else if ((computerMove === 'paper') && (playerMove === 'scissors')) {
     winner = "The player. You win!";
  }else if ((computerMove === 'rock') && (playerMove === 'paper')) {
     winner = "The player. You win!";
 } else if ((computerMove === 'scissors') && (playerMove === 'paper')) {
    winner = "The computer. You lose bitch!";
} else if ((computerMove === 'paper') && (playerMove === 'paper')) {
     winner = "It's a tie!";
  }
console.log("The winner is: " + winner);
}