How to detect that Ctrl+R was pressed?

Question

I\'m coding a function in jquery that executes if Ctrl+R is pressed but I can\'t seem to find out what the left and right ctrl keycodes are... Can some

Answer 1

 $(document).ready(function () {
     $(document).keyup(function (e) {
         if (e.keyCode == 81 && e.ctrlKey) { //CTRL+Q
             alert("CTRL+Q");
         } else if (e.keyCode == 27) { //ESCAPE
             alert("escape");
         } else if (e.keyCode == 67 && e.altKey) { // ALT+C
           alert("ALT+C");
        }     
    });
});

key codes