secret code

secretCode.js

var keysPressed = [],
	keyTimer

var verifiedKeys = [74,65,80,65,78].toString()

$(window).on('keydown', function(e){
	if (e.keyCode >= 65 && event.keyCode <=90){
		clearTimeout(keyTimer)
		keysPressed.push( e.keyCode )
		keyTimer = setTimeout(verifyCode, 1500)
	}
})

function verifyCode(){
    if ( keysPressed.length >= 5){
		if ( keysPressed.toString().indexOf(verifiedKeys) > -1 ){
            // correct keys pressed, do whatever
			
			$(window).off('keydown')
		} else {
			// incorrect keys pressed, reset keyspressed
			keysPressed = []
		}
	}	
}