Odin项目：JS控制台石头剪刀布game函数循环异常求助

原代码的核心问题 #

1. game()未循环执行：原函数仅用if判断一次，只运行一轮，无法持续到一方得5分
2. 电脑选择未更新：全局的computerSelection仅初始化一次，每轮都用同一个选择，失去随机性
3. 重复弹窗：全局提前调用了prompt，game函数内又调用一次，导致两次输入请求
4. 未显示每轮结果：playRound返回的结果没有打印，无法看到每轮战况

修复后的完整代码 #

let playerScore = 0;
let computerScore = 0;

function computerPlay() {
    let choices = ['rock', 'paper', 'scissors']
    return choices[Math.floor(Math.random() * choices.length)]
}

function playRound(playerSelection, computerSelection){
    if ((playerSelection === "rock" && computerSelection === "scissors") ||
       (playerSelection === "scissors" && computerSelection === "paper") ||
       (playerSelection === "paper" && computerSelection === "rock")){
        playerScore++;
        return `你赢了! ${playerSelection} 击败 ${computerSelection}, 比分: 玩家 ${playerScore} - 电脑 ${computerScore}`;
       } else if (playerSelection === computerSelection){
        return `平局! 双方都选了${playerSelection}, 比分不变: 玩家 ${playerScore} - 电脑 ${computerScore}`;
       } else {
        computerScore++
        return `你输了! ${computerSelection} 击败 ${playerSelection}, 比分: 玩家 ${playerScore} - 电脑 ${computerScore}`;
       }
}

function game(){
    // 循环对战直到一方得分达到5
    while (playerScore < 5 && computerScore < 5) {
        const playerSelection = prompt("请选择: Rock, Paper 或 Scissors").toLowerCase();
        // 每轮生成新的电脑选择
        const computerSelection = computerPlay();
        // 打印本轮结果
        const roundResult = playRound(playerSelection, computerSelection);
        console.log(roundResult);
    }
    // 输出最终胜负
    console.log(playerScore === 5 ? "恭喜你，最终获胜！" : "很遗憾，电脑最终获胜！");
}

// 启动游戏
game();

关键修改点 #

• 用while循环替代if，实现持续对战逻辑，直到一方得分≥5
• 每轮循环内重新调用computerPlay()生成电脑选择，保证每轮随机性
• 移除全局的playerSelection和computerSelection变量，避免作用域冲突导致的重复输入
• 调用playRound后立即打印结果，实时展示每轮战况
• 循环结束后判断最终胜负并给出提示

内容的提问来源于stack exchange，提问作者jimboslice