Janken Function Javascript

Java, Script, Function, Janken

var userChoice = prompt("Do you choose rock, paper or scissors?");
var computerChoice = Math.random();

if (computerChoice & lt; 0.34) {

    computerChoice = "rock";

} else if (computerChoice & lt; = 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)