Rock, paper, scissors game in 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";}

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);