为什么我的石头剪刀布游戏不起作用？它不断返回"你选择了摇滚，你赢了"，我该如何解决这个问题？

Question

我一直在这个问题上停留了很长时间，基本上它是一个人类与计算机，我输入说 Rock，它给了我你选择了 Rock 你赢了，即使我选择了其他人它仍然返回那个，有人可以帮助我弄清楚为什么它一直这样做吗？

let person = prompt ("Rock, Paper, Scissors");
// Computer makes a choice
function computerPlay () {
let compchoice = ['Rock', 'Paper', 'Scissors'];
return compchoice[Math.floor(Math.random() * 
compchoice.length)];
}
//Player vs Computer
function playRound (playerSelection, computerSelection) {
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!';
} 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';
}
}
const playerSelection = 'rock';
const computerSelection = computerPlay();
console.log(playRound(playerSelection, computerSelection));

它应该只是玩石头剪刀布的常规游戏，如果我选择石头，计算机选择了纸，计算机应该赢。现在我正试图让它只玩一轮。

Answer 1

您正在使用or语句。您需要使用and语句。以你的第一行为例：

if (playerSelection === 'Rock' || computerSelection === 'Scissors') {
return 'You chose ' + playerSelection + ',' + ' You win!';
} 

它说：

if playerSelection equals Rock OR computerSelection equals Scissors return 

因此，如果玩家选择是摇滚，它将返回那里。您需要使用的是AND语句。试试这个：

let playerSelection = prompt("Rock, Paper, Scissors");
// Computer makes a choice
function computerPlay() {
let compchoice = ['Rock', 'Paper', 'Scissors'];
return compchoice[Math.floor(Math.random() * compchoice.length)];
}
//Player vs Computer
function playRound(playerSelection, computerSelection) {
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!';
} 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';
}
}
//const playerSelection = 'Rock';
const computerSelection = computerPlay();
console.log(playRound(playerSelection, computerSelection));

倒数第三行的球员选择中还有一个错别字。玩家选择字符串也应该像它正在比较的字符串一样大写。