石头，布，剪刀- Javascript

const options = ['石头', '布', '剪刀'];

function getComputerChoice() {
  const randomIndex = Math.floor(Math.random() * options.length);
  return options[randomIndex];
}

function determineWinner(userChoice, computerChoice) {
  if (userChoice === computerChoice) {
    return '平局';
  } else if (
    (userChoice === '石头' && computerChoice === '剪刀') ||
    (userChoice === '剪刀' && computerChoice === '布') ||
    (userChoice === '布' && computerChoice === '石头')
  ) {
    return '你赢了！';
  } else {
    return '计算机赢了！';
  }
}

function playGame(userChoice) {
  const computerChoice = getComputerChoice();
  const result = determineWinner(userChoice, computerChoice);
  return `你选择了${userChoice}，计算机选择了${computerChoice}，${result}`;
}

console.log(playGame('石头'));