Rock_paper_scissor.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!" + " " + "Lets play again." ;
    }
    
    else if (choice1 === "rock") {
        
        if (choice2 === "scissors") {
            return "rock wins" + "<br>" + "You beat the computer, nice job!";
        }
        else {
            return "paper wins" + "<br>" + "Your really smart computer beat you.";
        }
    }
    
    else if (choice1 === "paper") {
        
        if (choice2 === "rock") {
            return "paper wins" + "<br>" + "You beat the computer, nice job!";
        }
        else {
            return "scissors wins" + "<br>" + "Your really smart computer beat you.";
        }
            
    }
    
    else if (choice1 === "scissors") {
        
        if (choice2 === "rock") {
            return "rock wins" + "<br>" + "Your really smart computer beat you.";
        }
        else {
            return "scissors win" + "<br>" + "You beat the computer, nice job!";
        }
    }
    
    
    }
    
   document.write("Computer chose: " + computerChoice + "<br>");
   document.write(compare(userChoice,computerChoice));