"Rock, Paper, Scissors" in JavaScript.

rock_paper_scissors.js

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";
}

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