var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();
if (computerChoice <= 0.33) {
    computerChoice = "rock";
} else if(computerChoice >= 0.66) {
    computerChoice = "paper";
} else {
    computerChoice = "scissors";
} console.log("Computer: " + 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";
        }
    }
}

alert("The computer chooses " + computerChoice);
(compare(userChoice,computerChoice));