JavaScript实现人机猜拳

const readline = require("readline-sync"); //输出功能
console.log("欢迎进入猜拳游戏");
console.log("请选择出拳：1. 石头 2.剪刀 3.布");
let option = readline.question() - 0;
while (isNaN(option) || option < 1 || option > 3) {
    console.log("请重输：");
    option = readline.question() - 0;
}
//电脑随机出拳
let random = parseInt(Math.random() * 3 + 1);
if (random == 1) {
    console.log("电脑出拳为：石头");
}else if(random == 2){
    console.log("电脑出拳为：剪刀");
}else{
    console.log("电脑出拳为：布");
}
//玩家出拳
if (option == 1) {
    console.log("玩家出拳为：石头");
}else if(option == 2){
    console.log("玩家出拳为：剪刀");
}else{
    console.log("玩家出拳为：布");
}
//判断
function name(a, b) {
    if (a - b == -1 || a - b == 2) {
        console.log("电脑胜利");
    }else if(a - b == 0){
        console.log("平局");
    }else{
        console.log("玩家胜利");      
    }
}
name(random, option)