Javascript/jQuery Keypress logging

Question

I would like to be able to log the key presses on a specific page, trying to implement an 'Easter egg' type functionality where when the correct keys are pressed in the correct order it triggers and event.

Can anyone give me any pointers?

Answer 1

Well, even though another answer has been accepted, I'm going to throw one out there anyway.

$(document).ready(function() {

    var easterEgg = 'egg';
    var eggLength = easterEgg.length;
    var keyHistory = '';
    var match;
        $(document).keypress(function(e) {
            keyHistory += String.fromCharCode(e.which)
            match = keyHistory.match(easterEgg); 
            if(match) {
                alert(match);
                keyHistory = match =  '';
            } else if (keyHistory.length > 30) {
                keyHistory = keyHistory.substr((keyHistory.length - eggLength - 1));
            }
        });
});

When you ultimately type 'egg' (for this example), you will get an alert, and the key history will reset.

EDIT: Updated the code to truncate the string if it gets too long.