Question

我创建了一个基本的石头剪刀游戏，我无法在结果中返回结果。

我一直在尝试一切

链接控制台记录比较并将其放入变量..

console.log（compare）由于某种原因返回undefined。

请帮忙

＆＃13;

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
var result;

if (computerChoice < 0.34) {
	computerChoice = "rock";
} else if(computerChoice <= 0.67) {
	computerChoice = "paper";
} else {
	computerChoice = "scissors";
} console.log("Computer's choice: " + computerChoice);
  console.log("Your choice: " + userChoice);
  console.log(computerChoice + " vs " + userChoice); 
  

var compare = function(userChoice, computerChoice){
    if (userChoice === computerChoice){
        return    "The result is a tie!"; 
    } else if (userChoice ==="rock"){
       if(computerChoice ==="scissors"){
        return "rock wins!";    
       }
       else {
         return "paper wins!";       
       }
    } else if (userChoice === "paper") {
        if(computerChoice === "rock") {
        return "paper wins!"; 
        }
        else {
        return "scissors wins!";
        }
    } else if (userChoice === "scissors") {
        if(computerChoice === "rock") {
        return "rock wins!"; 
        }
        else {
        return "scissors wins!";
        }
    }
     
}

＆＃13;

Answer 1

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
var result;

if (computerChoice < 0.34) {
	computerChoice = "rock";
} else if(computerChoice <= 0.67) {
	computerChoice = "paper";
} else {
	computerChoice = "scissors";
} console.log("Computer's choice: " + computerChoice);
  console.log("Your choice: " + userChoice);
  console.log(computerChoice + " vs " + userChoice); 

function compare(userChoice, computerChoice){
    if (userChoice === computerChoice){
        return    "The result is a tie!"; 
    } else if (userChoice ==="rock"){
       if(computerChoice ==="scissors"){
        return "rock wins!";    
       }
       else {
         return "paper wins!";       
       }
    } else if (userChoice === "paper") {
        if(computerChoice === "rock") {
        return "paper wins!"; 
        }
        else {
        return "scissors wins!";
        }
    } else if (userChoice === "scissors") {
        if(computerChoice === "rock") {
        return "rock wins!"; 
        }
        else {
        return "scissors wins!";
        }
    }
     
}
var Compare = compare(userChoice, computerChoice);
console.log(Compare);

Answer 2

这里有语法错误...

return  =  "The result is a tie!";

将其更改为：

return "The result is a tie!";

Answer 3

正如Shinra tensei提到你在第18行中有=导致错误。这是一个更新的剪辑。我还为比较功能添加了一个警报。

＆＃13;

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
var result;

if (computerChoice < 0.34) {
	computerChoice = "rock";
} else if(computerChoice <= 0.67) {
	computerChoice = "paper";
} else {
	computerChoice = "scissors";
} console.log("Computer's choice: " + computerChoice);
  console.log("Your choice: " + userChoice);
  console.log(computerChoice + " vs " + userChoice); 
  
  alert(compare(userChoice,computerChoice));

 function compare (userChoice, computerChoice){
    if (userChoice === computerChoice){
        return  "The result is a tie!"; 
    } else if (userChoice ==="rock"){
       if(computerChoice ==="scissors"){
        return "rock wins!";    
       }
       else {
         return "paper wins!";       
       }
    } else if (userChoice === "paper") {
        if(computerChoice === "rock") {
        return "paper wins!"; 
        }
        else {
        return "scissors wins!";
        }
    } else if (userChoice === "scissors") {
        if(computerChoice === "rock") {
        return "rock wins!"; 
        }
        else {
        return "scissors wins!";
        }
    }
     
}

＆＃13;

Answer 4

这里的主要问题是你从未执行过你写的匿名函数。我比较了一个普通函数而不是匿名函数，只是为了让它更像其他语言。这是一个很好的工作代码：

div > span:last-of-type {
  display:table-row!important;
}

我似乎无法返回函数内部的结果

4 个答案: