Creating keyboard shortcuts for your HTML5 app?

Question

How to create keyboard shortcuts for HTML5 apps? Using key events don't work because some browsers already define most of those inputs for built-in features such as Save As..., (which are useless for interactive apps).

Answer 1

Well, that one works for me: (CTRL-S in Chrome)

$(document).keydown(function(evt){
    if (evt.keyCode==83 && (evt.ctrlKey)){
        evt.preventDefault();
        alert('worked');
    }
});