codeup-web-exercises/konami.html at main · LeDukeOfZena/codeup-web-exercises · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>Konami Code</title>
    <style>
        .spin { animation: spin 3s linear infinite; }

        .goPackers {
            color: white;
            text-transform: uppercase;
        }
    </style>
</head>
<body>
    <div class="spin">
        <h1 class="spin">Konami Code
            <span class="goPackers">
                <br>
            go packers!!!
            </span>
        </h1>
    </div>

<!--<script>-->
<!--    "use strict";-->

<!--    document.addEventListener("keyup", event => console.log(event.key) );-->
<!--</script>-->

    <script>
        "use strict";

        document.addEventListener("keyup", event => console.log(event.key) );

        const konamiCode = ["ArrowUp", "ArrowUp", "ArrowDown", "ArrowDown", "ArrowLeft", "ArrowRight", "ArrowLeft", "ArrowRight", "b", "a", "Enter"];
        let konamiCodeIndex = 0;

        document.addEventListener("keyup", event => {
        const key = event.key;
        if (key === konamiCode[konamiCodeIndex]) {
        konamiCodeIndex++;

        if (konamiCodeIndex === konamiCode.length) {
        document.body.style.backgroundColor = "green";
        document.body.style.color = "yellow";

        alert("You have added 30 lives!");
        konamiCodeIndex = 0;
    }
    } else {
        konamiCodeIndex = 0;
    }
    });
</script>

<!--    // Here's an example of how the event listener captures arrow key events:-->
<!--    //-->
<!--    // javascript-->
<!--    // Copy code-->
<!--    // document.addEventListener("keyup", event => {-->
<!--    //     const key = event.key; // This will be "ArrowUp" or "ArrowLeft" for arrow keys-->
<!--    //     // Rest of the code-->
<!--    //     console.log(key);-->
<!--    // });-->


</body>
</html>

<!--The Konami Code was a cheat code that appeared on a number of games from Konami. Contra was one of the early NES games to have featured the Konami Code. Contra would start you with 3 lives per game, but after the start screen, if you entered the Konami Code, you would get 30 lives!-->

<!--The Konami Code: Up, Up, Down, Down, Left, Right, Left, Right, B, A ( ↑ ↑ ↓ ↓ ← → ← → B A )-->

<!--Create a file named konami.html using the template below. This code will log a number reference that is tied to each key that is entered on your keyboard. Open the console and view the output as you type on the keyboard.-->

<!--Allow the user to enter the Konami Code: "↑ ↑ ↓ ↓ ← → ← → b a enter" (the return key)-->
<!--Find the matching sequence using the code above for each key in the Konami Code.-->

<!--Don't worry about capital a or b just check for lowercase.-->

<!--After the correct Konami Code sequence is inputted, have the script alert the user: "You have added 30 lives! Other ideas:-->
<!--Change the background screen.-->
<!--Play a sound.-->
<!--Be creative!-->
<!--Happy Playing.-->