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joehinkle/RPS.js

Created August 28, 2013 15:07
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  1. joehinkle created this gist Aug 28, 2013.
    57 changes: 57 additions & 0 deletions RPS.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,57 @@
    // Initializing Variables
    var userChoice = prompt("Do you choose rock, paper or scissors?");
    var computerChoice = Math.random();

    // Validation for user input
    //if ( userChoice != "rock" || "paper" || "scissors" ) {
    // userChoice = prompt("You did not select rock, paper, or scissors. Please try again.");
    //}

    // Randomly selecting correct value for computerChoice
    if ( computerChoice < 0.34 ) {
    computerChoice = "rock";
    } else if ( computerChoice <= 0.67 ) {
    computerChoice = "paper";
    } else {
    computerChoice = "scissors";
    }

    // Function that compares the two values
    function compare( 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 win!";
    }
    }

    if ( choice1 === "scissors" ) {
    if ( choice2 === "paper" ) {
    return "Scissors win!";
    }
    else {
    return "Rock wins!";
    }
    }
    }


    document.write("<div>User selects: " + userChoice + "</div>");
    document.write("<div>Computer selects: " + computerChoice + "</div>");
    document.write("<div>Results are: " + compare(userChoice, computerChoice) + "</div>");