Best cross-browser method to capture CTRL+S with JQuery?

Question

This works for me (using jquery) to overload Ctrl+S, Ctrl+F and Ctrl+G:

$(window).bind('keydown', function(event) {
    if (event.ctrlKey || event.metaKey) {
        switch (String.fromCharCode(event.which).toLowerCase()) {
        case 's':
            event.preventDefault();
            alert('ctrl-s');
            break;
        case 'f':
            event.preventDefault();
            alert('ctrl-f');
            break;
        case 'g':
            event.preventDefault();
            alert('ctrl-g');
            break;
        }
    }
});

$(window).keypress(function(event) {
    if (!(event.which == 115 && event.ctrlKey) && !(event.which == 19)) return true;
    alert("Ctrl-S pressed");
    event.preventDefault();
    return false;
});

Key codes can differ between browsers, so you may need to check for more than just 115.

You could use a shortcut library to handle the browser specific stuff.

shortcut.add("Ctrl+S",function() {
    alert("Hi there!");
});

This jQuery solution works for me in Chrome and Firefox, for both Ctrl+S and Cmd+S.

$(document).keydown(function(e) {

    var key = undefined;
    var possible = [ e.key, e.keyIdentifier, e.keyCode, e.which ];

    while (key === undefined && possible.length > 0)
    {
        key = possible.pop();
    }

    if (key && (key == '115' || key == '83' ) && (e.ctrlKey || e.metaKey) && !(e.altKey))
    {
        e.preventDefault();
        alert("Ctrl-s pressed");
        return false;
    }
    return true;
}); 

This one worked for me on Chrome... for some reason event.which returns a capital S (83) for me, not sure why (regardless of the caps lock state) so I used fromCharCode and toLowerCase just to be on the safe side

$(document).keydown(function(event) {

    //19 for Mac Command+S
    if (!( String.fromCharCode(event.which).toLowerCase() == 's' && event.ctrlKey) && !(event.which == 19)) return true;

    alert("Ctrl-s pressed");

    event.preventDefault();
    return false;
});

If anyone knows why I get 83 and not 115, I will be happy to hear, also if anyone tests this on other browsers I'll be happy to hear if it works or not

I combined a few options to support FireFox, IE and Chrome. I've also updated it to better support mac

// simply disables save event for chrome
$(window).keypress(function (event) {
    if (!(event.which == 115 && (navigator.platform.match("Mac") ? event.metaKey : event.ctrlKey)) && !(event.which == 19)) return true;
    event.preventDefault();
    return false;
});

// used to process the cmd+s and ctrl+s events
$(document).keydown(function (event) {
     if (event.which == 83 && (navigator.platform.match("Mac") ? event.metaKey : event.ctrlKey)) {
        event.preventDefault();
        save(event);
        return false;
     }
});