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!" } if (choice1 === "rock") { if (choice2 === "scissors") { return "rock wins!"; } else { return "paper wins"; } } if (choice1 === "paper") { if (choice2 === "rock") { return "paper wins!"; } else { return "scissors wins"; } } if (choice1 === "scissors") { if (choice2 === "rock") { return "rock wins!"; } else { return "scissors wins"; } } } alert(compare(userChoice, computerChoice));