如何使函数游戏循环，以便它更新用户和计算机的分数

Question

我循环这个石头剪刀游戏 5 次，如果用户赢了，他们得到 1，如果计算机赢了，他们得到 1，依此类推。如何更新用户和计算机分数？如果它最终成为平局，我该如何做到这一点，所以没有人得到一分？

// Computer makes a choice
function computerPlay() {
let compchoice = ['Rock', 'Paper', 'Scissors'];
return compchoice[Math.floor(Math.random() * compchoice.length)];
}
//Plays a single round Player vs Computer 
function playRound(playerSelection, computerSelection) {
//Player
if (playerSelection === 'Rock' && computerSelection === 'Scissors') 
{
    return 'You chose ' + playerSelection + ',' + ' You win!';
} else if (playerSelection === 'Paper' && computerSelection === 
'Rock') {
    return 'You chose ' + playerSelection + ',' + ' You win!';
} else if (playerSelection === 'Scissors' && computerSelection === 
'Paper') {
    return 'You chose ' + playerSelection + ',' + ' You win!';
} 
// Computer
else if (computerSelection === 'Rock' && playerSelection === 
'Scissors') {
    return 'Computer chose ' + computerSelection + ',' + 'Computer 
wins!';
} else if (computerSelection === 'Paper' && playerSelection === 
'Rock') {
    return 'Computer chose ' + computerSelection + ',' + 'Computer 
wins!';
} else if (computerSelection === 'Scissors' && playerSelection === 
'Paper') {
    return 'Computer chose ' + computerSelection + ',' + ' Computer 
wins!';
 } else if (computerSelection === playerSelection) {
    return 'Its a draw!';
 } else {
    return 'Please chose Rock, Paper, or Scissors';
 }
}
//loops game 5 times to decide a winner.
function game() {
for(var i=0;i<5;i++){
let playerSelection = prompt("Rock, Paper, Scissors");
const computerSelection = computerPlay()
console.log(playRound(playerSelection, computerSelection))
console.log("your score = " + userScore);
console.log("Computer's score = " + computerScore);
}
}
let userScore =0;
let computerScore =0;
console.log(game());

Answer 1

我认为这就是您要实现的目标。您只需要在循环(即：game(迭代时跟踪分数。我修改了playRound以返回一个数组 - 第一个元素表示玩家是否在回合中击败了计算机，第二个元素是您最初在函数中console.log的消息：

// Computer makes a choice
function computerPlay() {
  let compchoice = ['Rock', 'Paper', 'Scissors'];
  return compchoice[Math.floor(Math.random() * compchoice.length)];
}
//Plays a single round Player vs Computer 
function playRound(playerSelection, computerSelection) {
  let playerWinsRound = false;
  let text;
  //Player
  if (playerSelection === 'Rock' && computerSelection === 'Scissors') {
    playerWinsRound = true;
    text = 'You chose ' + playerSelection + ',' + ' You win!';
  } else if (playerSelection === 'Paper' && computerSelection ===
    'Rock') {
    playerWinsRound = true;
    text = 'You chose ' + playerSelection + ',' + ' You win!';
  } else if (playerSelection === 'Scissors' && computerSelection ===
    'Paper') {
    playerWinsRound = true;
    text = 'You chose ' + playerSelection + ',' + ' You win!';
  }
  // Computer
  else if (computerSelection === 'Rock' && playerSelection ===
    'Scissors') {
    text = 'Computer chose ' + computerSelection + ', Computer wins!';
  } else if (computerSelection === 'Paper' && playerSelection ===
    'Rock') {
    text = 'Computer chose ' + computerSelection + ', Computer wins!';
  } else if (computerSelection === 'Scissors' && playerSelection ===
    'Paper') {
    text = 'Computer chose ' + computerSelection + ', Computer wins!';
  } else if (computerSelection === playerSelection) {
    playerWinsRound = null;
    text = 'Its a draw!';
  } else {
    text = 'Please chose Rock, Paper, or Scissors';
  }
  return [playerWinsRound, text];
}
//loops game 5 times to decide a winner.
function game() {
  //Score is part of the game - so move the score vars inside the game function
  let userScore = 0;
  let computerScore = 0;
  //Update the scores on each iteration of the loop (i.e.: each round)
  for (var i = 0; i < 5; i++) {
    const playerSelection = prompt("Rock, Paper, Scissors");
    const computerSelection = computerPlay();
    const [playerWinsRound, text] = playRound(playerSelection, computerSelection)
    if (playerWinsRound) {
      userScore += 1;
    } else {
      if (playerWinsRound === false) {
        computerScore += 1;
      }
    }
    console.log(text);
    console.log(`Your score =  ${userScore}`);
    console.log(`Computer score = ${computerScore}`);
  }
}
game();