The Konami Code (sometimes called the Contra Code) is a cheat code from many Konami video games.
It is now often used as a gag, homage or an easter egg within many products or websites.
↑ ↑ ↓ ↓ ← → ← → B A
Up, Up, Down, Down, Left, Right, Left, Right, B, A
Read more about the Konami Code from the associated Wikipedia entry.
You can use this as a library within your web applications.
Version 1.0 (+ hotfixes): https://cdn.jsdelivr.net/gh/hexolan/konami-code-snippets@1.0/src/core.min.js
Latest Version: https://cdn.jsdelivr.net/gh/hexolan/konami-code-snippets@main/src/core.min.js
<html>
<body>
(...content)
<script src="https://cdn.jsdelivr.net/gh/hexolan/konami-code-snippets@main/src/core.min.js"></script>
<script>
document.addEventListener("keydown", handleKonami(() => {
console.log('konami!');
}));
</script>
</body>
</html>An example of direct usage can be seen within the source of examples/direct-nolib-unminified.html.
The code contained within this repository is released under the MIT License.
"Konami" and "Contra" are registered trademarks of the KONAMI CORPORATION (Konami Digital Entertainment), who hold no affiliation to this project.