SyntaxError：意外的代幣如果

Question

我目前在學習JavaScript，並且一直有這個錯誤！

這是我的腳本：

var compare = function(choice1, choice2) 
    if (choice1 === choice2) { 
     return "The result is a tie!"; 
    } 
    else if (choice1 === "rock") 
     if (choice2 === "scissors") { 
      return "rock wins"; 
     } 
     else { 
      return "paper wins"; 
     } 

Answer 1

應該是：

var compare = function(choice1, choice2){ 

    if (choice1 === choice2) { return "The result is a tie!"; } 
    else if (choice1 === "rock") 
     if (choice2 === "scissors") { return "rock wins"; } 
    else 
     return "paper wins"; 
} 

或者更簡潔：

var compare = function(choice1, choice2){ 

    if(choice1 === choice2){ 
     return "The result is a tie!" 
    }else if(choice1 === "rock"){ 
     if(choice2 === "scissors") { 
      return "rock wins" 
     } 
    }else{ 
     return "paper wins" 
    } 
}