Ctrl+S preventDefault in Chrome

Question

I Want to catch Ctrl+S in Chrome, and prevent the default browser behavior to save the page. How?

(Just posting the question & answer as I

Answer 1

document.onkeydown = function (e) {
    e = e || window.event;//Get event
    if (e.ctrlKey) {
        var c = e.which || e.keyCode;//Get key code
        switch (c) {
            case 83://Block Ctrl+S
                e.preventDefault();     
                e.stopPropagation();
            break;
        }
    }
};
   

Answer 2

All in one solution to prevent data

// disable right click
$(function() {
    $(this).bind("contextmenu", function(e) {
        e.preventDefault();
    });
}); 

// Prevent F12      
$(document).keydown(function (event) {
    if (event.keyCode == 123) { // Prevent F12
        return false;
    } else if (event.ctrlKey && event.shiftKey && event.keyCode == 73) { // Prevent Ctrl+Shift+I        
        return false;
    }
});

//stop copy of content
function killCopy(e){
    return false
}
function reEnable(){
    return true
}
document.onselectstart=new Function ("return false")
    if (window.sidebar){
    document.onmousedown=killCopy
    document.onclick=reEnable
}

// prevent ctrl + s
$(document).bind('keydown', function(e) {
  if(e.ctrlKey && (e.which == 83)) {
    e.preventDefault();
    return false;
  }
});

Answer 3

"Borrowed" from Overriding control+s (save functionality) in browser

document.addEventListener("keydown", function(e) {
  if (e.keyCode == 83 && (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey)) {
    e.preventDefault();
    alert('captured');
  }
}, false);

Answer 4

As far as I can see, the secret sauce is, that Ctrl+S does NOT fire the keypress event, only the keydown event.

Using jQuery.hotkeys:

$(document).bind('keydown', 'ctrl+s', function(e) {
    e.preventDefault();
    alert('Ctrl+S');
    return false;
});

Only with jQuery:

$(document).bind('keydown', function(e) {
  if(e.ctrlKey && (e.which == 83)) {
    e.preventDefault();
    alert('Ctrl+S');
    return false;
  }
});

Edit 2012.12.17 - jQuery.hotkeys says

Hotkeys aren't tracked if you're inside of an input element (unless you explicitly bind the hotkey directly to the input). This helps to avoid conflict with normal user typing.