Keycodes alt shift number : I am trying to use ALT + SHIFT + number. I have tried:

    if (e.which === 18 && e.which === 16 && e.which === 49) {
      //DO SOMETHING
    }
    if (e.altKey && ( e.which === 16 ) && ( e.which === 49 )) {
      //DO SOMETHING
    }
    if (e.which === 18) && (e.which === 16) && e.which === 49) {
      //DO SOMETHING
    }
None of them work. Can someone show me how to combine these keys please.