js如何判断猜拳

// 生成随机数const randomNumber = Math.random();// 判断区间const resultIndex = Math.floor(randomNumber * 3);// 分配结果let result;switch (resultIndex) {  case 0:    result = "石头";    break;  case 1:    result = "剪刀";    break;  case 2:    result = "布";    break;}// 输出结果console.log(`你出了：${result}`);