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

The Key Code for Ctrl key is 11.

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


  alert("Ctrl is pressed: " + e.ctrlKey); 
}); 

Answer 2

why aren't you using e.ctrlKey ?

 if (e.keyCode == 65 && e.ctrlKey) {
     alert('ctrl A');
 }

edit: here's an appropriate function to detect your ctrl-r keypress and stop the browser from reloading.

function keydown(e) {
    if (e.ctrlKey && e.keyCode == 82) {
        // 82 = r

        // TODO: your thing.

        if (e.preventDefault) {
            e.preventDefault();
        }
        else {
            return false;
        }
    }
}

i'm a jquery newbie, i think you'd do

$(document).keydown(keydown);

right?

Answer 3

There is a boolean property called ctrlKey that you should be able to use here...

$(document).keypress(function(e) { 
   alert("Ctrl is pressed: " + e.ctrlKey); 
}); 

Answer 4

You have to use the keydown function to trap Ctrl characters. Here is my implementation of Ctrl+A:

    $(document).keydown(function(e) {
        if (e.keyCode == 65 && e.ctrlKey) {
            alert('ctrl A');
        }
    });

Ctrl-R is tougher because in most browsers, that is Reload Page, which means the javascript doesn't run, the page is refreshed.

Just a note as well, the keyCode value are different in the keydown/keyupup functions than in the keypress functions.

EDIT: Removed ctrl variable, forgot about ctrlKey