codeup-web-exercises/konami.html at master · michaelmeyer26/codeup-web-exercises · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>Konami Code</title>
</head>
<body>
<h1>Konami Code</h1>

<audio class="hidden" id="sound-effect">
    <source src="audio/sonic_ring.mp3">
</audio>

<script src="js/jquery-3.5.1.min.js"></script>
<script>
    "use strict";

    var konamiCode = [38, 38, 40, 40, 37, 39, 37, 39, 66, 65, 13];
    var enteredKeys = [];
    var codeSound = document.querySelector('#sound-effect')

    function keyChecker() {
            for (var i = 0; i < enteredKeys.length; i++) {
                if (enteredKeys[i] !== konamiCode[i]) {
                    enteredKeys = [];
                    return;
                }
            }
            if (enteredKeys.length === 11) {
                enteredKeys = [];
                codeSound.play();
                alert("Konami Code entered! +100 Continues!");
            }
    }

    $(document).keyup(function(event){
        enteredKeys.push(event.keyCode);
        keyChecker();
    });


</script>
</body>
</html>