Question

有谁知道为什么这可能导致无限循环。我只是看不出原因！

我觉得问题可能出在我的while循环播放到五下。

while循环应该在5时停止，当玩家或计算机到达时，游戏应该停止。

这是Rock，Paper，Scissors。每场比赛的结果是球员获胜，电脑赢或抽奖。

一旦玩家达到5胜，游戏就应该结束。

问题是游戏没有按预期结束！

function getInput() {
  console.log("Please choose either 'rock', 'paper', or 'scissors'.");
  return prompt("Please choose either 'rock', 'paper', or 'scissors'");
}

function getPlayerMove() {
  return getInput();
}

function randomPlay() {
  var randomNumber = Math.random();
  if (randomNumber < 0.33) {
      return "rock";
  } 
  else if (randomNumber < 0.66) {
    return "paper";
  } 
  else {
    return "scissors";
  }
}


function getComputerMove() {
  return randomPlay();
}

function getWinner(playerMove,computerMove) {
  var winner;
  if (playerMove === 'rock' && computerMove === 'scissors') {  
    winner = 'Player';
  }  
  else if (playerMove === 'scissors' && computerMove === 'paper') {
    winner='Player';
  }  
  else if (playerMove === 'paper' && computerMove === 'rock') {
    winner='Player';
  } 
  else if (playerMove === 'paper' && computerMove === 'scissors') {
    winner='Computer';
  }  
  else if (playerMove === 'rock' && computerMove === 'paper') {
    winner='Computer';
  }  
  else if (playerMove === 'scissors' && computerMove === 'rock') {
    winner = 'Computer';
  }  
  else { 
  winner = "tie";
  }
  return winner;
}

// A big limitation of this game is the user is only allowed to choose once! To allow more choices you'd need to design the program differently 

function playToFive() {
  var playerWins = 0;
  var computerWins = 0;
  var playerMove = getPlayerMove();
  while ((playerWins <= 5) || (computerWins <= 5)) {
    var computerMove = getComputerMove();
    var winner = getWinner(getPlayerMove, getComputerMove);
    console.log('The player has chosen ' + playerMove + '. The computer has chosen ' + computerMove);
    if (winner === "player") {
        playerWins += 1; 
    } 
    else if (winner === "computer") {
        computerWins += 1;
    } 
    if ((playerWins = 5) || (computerWins = 5)) {
        console.log("The game is over! " + "The " + winner + " has taken out the game!");
        console.log("The final score was. " + playerWins + " to " + computerWins);
    }
    else {
        console.log("The " + winner + ' takes the round. It is now ' + playerWins + ' to ' + computerWins);
    }
  }
}

playToFive ();

Answer 1

问题在于这一行

var winner = getWinner(getPlayerMove, getComputerMove);

您正在将函数引用传递给getWinner（）方法

var winner = getWinner(playerMove , computerMove );

这意味着您需要稍后再次移动，因此请将方法更改为（代码中修复的多个问题）

function playToFive() 
{
  var playerWins = 0;
  var computerWins = 0;
  while ((playerWins <= 5) && (computerWins <= 5))  //this line has && instead of ||
  {
    var computerMove = getComputerMove(); 
    var playerMove = getPlayerMove(); //this line is now inside while loop
    var winner = getWinner( playerMove , computerMove );
    console.log('The player has chosen ' + playerMove + '. The computer has chosen ' + computerMove);
    if (winner === "Player") { //P caps
        playerWins += 1; 
    } 
    else if (winner === "Computer") { //C caps
        computerWins += 1;
    } 
    if ((playerWins == 5) || (computerWins == 5)) { //= is replaced by ==
        console.log("The game is over! " + "The " + winner + " has taken out the game!");
        console.log("The final score was. " + playerWins + " to " + computerWins);
    }
    else {
        console.log("The " + winner + ' takes the round. It is now ' + playerWins + ' to ' + computerWins);
    }
  }
}

Answer 2

为了这个，如果相应地运行：

if ((playerWins = 5) || (computerWins = 5)) {}

您需要使用==运算符，因为只有一个=用于值分配。

if ((playerWins == 5) || (computerWins == 5)) {}

Answer 3

首先在while循环中你需要更改它＆amp;＆amp;否则，如果计算机为8且播放器为3，则循环将继续，直到两个玩家都> 5。

Answer 4

我首先想一想你应该理解（==）和（===）here之间的区别。

使用此代码（条件代码未分配）

 if ((playerWins == 5) || (computerWins == 5)) { //use logical Operator not assignment Oprtr.
        console.log("The game is over! " + "The " + winner + " has taken out the game!");
        console.log("The final score was. " + playerWins + " to " + computerWins);
    }

而不是##

 if ((playerWins = 5) || (computerWins = 5)) { // Error Code.
            console.log("The game is over! " + "The " + winner + " has taken out the game!");
            console.log("The final score was. " + playerWins + " to " + computerWins);
        }

问题在于行

您正在将函数引用传递给getWinner（）方法

使用此

 var winner = getWinner(playerMove , computerMove );

而不是

 var winner = getWinner(getPlayerMove, getComputerMove);

对于此功能......

function getWinner(playerMove,computerMove) {
  var winner;
  if (playerMove === 'rock' && computerMove === 'scissors') {  
    winner = 'Player';
  }  
  else if (playerMove === 'scissors' && computerMove === 'paper') {
    winner='Player';
  }  
  else if (playerMove === 'paper' && computerMove === 'rock') {
    winner='Player';
  } 
  else if (playerMove === 'paper' && computerMove === 'scissors') {
    winner='Computer';
  }  
  else if (playerMove === 'rock' && computerMove === 'paper') {
    winner='Computer';
  }  
  else if (playerMove === 'scissors' && computerMove === 'rock') {
    winner = 'Computer';
  }  
  else { 
  winner = "tie";
  }
  return winner;
}

每次此方法都将tie设置为获胜者。

但你应该知道(==) equalto和(===) equal value and equal type here

之间的区别

Answer 5

谢谢你们。有很多问题。

干杯队员。绝对需要＆amp;＆amp;而不是||。 ||导致游戏继续进行

还需要var winner = getWinner（getPlayerMove，getComputerMove）。这导致无限循环。

JavaScript中的无限循环 - 循环

5 个答案:

使用此代码（条件代码未分配）

而不是##