How I use multiply(*), add(+) divide (/) to be hotkey (shortcut key)

Question

I want to make "add(+)" "multiply(*)" "divide(/)" as hotkeys but following the code I attached they can not do for that

 $(document).keypress(function(event) { var keycode = (event.keyCode? event.keyCode: event.which); if (keycode == '111') { $('#someTextBox').focus(); } });

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <input type="text" id="someTextBox" />

Answer 1

http://www.asquare.net/javascript/tests/KeyCode.html does not show 111 as a one of +,/,* on keypress

 $(document).keypress(function(event) { var keycode = (event.keyCode? event.keyCode: event.which); $('#someTextBox').val(keycode) if ([42,43,47].indexOf(keycode) > -1) { $('#someTextBox').focus(); } });

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <input type="text" id="someTextBox" />