use javascript make game1(rock, paper and scissors)

var userChoice = prompt("Do you choose rock, paper or scissors?");//people choice one
var computerChoice = Math.random();
if (computerChoice < 0.34) {
	computerChoice = "rock";
} else if(computerChoice <= 0.67) {
	computerChoice = "paper";
} else {
	computerChoice = "scissors";
 }
//define a computerchoice for math.random
 console.log("Computer: " + computerChoice);
console.log("user:"+userChoice);
console.log("result:"+compare(userChoice,computerChoice));
//syso result

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 === "scissors")
return "scissors win";
else {return "paper win";
    }
        }
else (choice1 === "scissors")
{if(choice2 === "rock")
{return "rock win";
    }
    else if(choice ==="paper")
    {return "scissors win"
        }
}
}
//judge conditions for rock, paper and scissors