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";
}

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