Codecademy Javascript Unit 2 - Rock, Paper, Scissors

RPS.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";
} console.log("Computer: " + computerChoice);

var compare = function(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 (choice1 === "paper") {
        if (choice2 === "scissors")
            return ("Scissors wins!");
        else
            return ("Paper wins!");
    }
    
    if (choice1 === "scissors") {
        if (choice2 === "rock")
            return ("Rock wins!");
        else
            return ("Scissors wins!");
    }
};

console.log(compare(userChoice,computerChoice));

Doesn't include any checks for correct input or using "rope" as an option.