Javascript：在另一个函数内调用一个函数

Question

First function contains the input and the second has if/else logic. I'm calling second function inside first but the if/else statements are seems to not working.

 var choice = function(){ var userChoice = prompt("Do you choose rock, paper or scissors?"); var computerChoice = Math.random(); if (computerChoice < 0.34) { computerChoice = "rock"; } else if(computerChoice <= 0.67) { computerChoice = "paper"; } else { computerChoice = "scissors"; } console.log("Computer: " + computerChoice); compare(userChoice, computerChoice); }; 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"; } } else if(choice1 === "paper"){ if(choice2 === "rock"){ return "paper wins"; } else{ return "scissors wins"; } } else if(choice1 === "scissors"){ if(choice2 === "rock"){ return "rock wins"; } else{ return "scissors wins"; } } else{ return "invalid input"; } }; choice(); 

Answer 1

It works well.

compare(userChoice, computerChoice)

returns an appropriate result.

However, you did not display it. So display it with alert() , etc.:

alert(compare(userChoice, computerChoice));