Rock, Paper, Scissors

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);

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";
    }
}
};
compare(userChoice, computerChoice);