Konami Code

konami-code.js

function konamiCode () {
	var keys = [];
	var valid = _.map("38384040373937396665".match(/.{1,2}/g), _.parseInt);
	document.onkeydown = function (key) {
		if (key > 10) {
			document.onkeydown = null;
			return;
		}
	
		keys.push(key.which);
	
		if (keys.length == 10 && JSON.stringify(keys) === JSON.stringify(valid)) {
	    		// Code Success, do something...
		}
	};
}