How to get Alt + C(or any other key) to work in JavaScript on Chrome for Mac and windows

Question

I have tried following code,

window.onkeypress =  function(event){

   if(event.altKey && (event.keyCode == 99 || event.keyCode == 67)){

      alert("alt + C pressed")
   }
}

How ever It doesn't work!

I tried alert(event.keyCode) per keypress and it seems when I press opt/alt key on Mac, I get a different keycode other than 99 or 67 with the combination.

Whats the correct way to achieve this ?

possible duplicate of [How does one capture a Mac's command key via Javascript?](http://stackoverflow.com/questions/3902635/how-does-one-capture-a-macs-command-key-via-javascript) — Waleed Khan, Jan 01 '13 at 10:35
I have seen and tried that example. command key is working fine. I have a problem with alt! — Amogh Talpallikar, Jan 01 '13 at 10:42
Got it, on Mac option plus other key combination generates different characters that's why! opt + c prints ç on TextEdit, thats why a different keyCode. — Amogh Talpallikar, Jan 01 '13 at 10:45

KooiInc · Answer 1 · 2013-01-01T10:56:23.003

3

Try using the keydown or keyup handler. In that case 'c' = keyCode 67:

window.onkeydown = function(e) {
    e = e || event;
    if (e.altKey && e.keyCode === 67) {
        console.log("alt+c pressed!");
    }
}

jsfiddle

edited Jan 01 '13 at 10:56

answered Jan 01 '13 at 10:40

KooiInc

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Doesn't work on the iMac keyboard. Option + key is generating a different character and keyCode value wont remain 67 or 99! – Amogh Talpallikar Jan 01 '13 at 10:48
I wanted to launch a popup with that key combination, I think I will resort to cmd + shift + c instead! – Amogh Talpallikar Jan 01 '13 at 10:52
Maybe http://stackoverflow.com/questions/3902635/how-does-one-capture-a-macs-command-key-via-javascript offers a solution? – KooiInc Jan 01 '13 at 10:54

How to get Alt + C(or any other key) to work in JavaScript on Chrome for Mac and windows

1 Answers1