Check if a pressed key changes a text editor state

check-keycode.js

function (keycode) {
  //event key code list
  const valid = 
  (keycode > 47 && keycode < 58)   || // number keys
  keycode == 32 || keycode == 13   || // spacebar & return key(s) (if you want to allow carriage returns)
  keycode == 8  || keycode == 46	 || // delete keys
  (keycode > 64 && keycode < 91)   || // letter keys
  (keycode > 95 && keycode < 112)  || // numpad keys
  (keycode > 185 && keycode < 193) || // ;=,-./` (in order)
  (keycode > 218 && keycode < 223);   // [\]' (in order)

  return valid;
}