JSFiddle - React, Tailwind, and code Playground

HTML

<div id="keyboard-shortcut-menu" style="background-color:red;">Hello</div>

JavaScript

$(function(){
    $(document).keyup(function (e) {
          if(e.which == 16) isShift=false; 
    }).keydown(function (e) {

          if(e.which == 16) isShift=true;

          if(e.which == 191 && isShift == true) {
                if ($('#keyboard-shortcut-menu').css('display') == 'none') {
                      $('#keyboard-shortcut-menu').show();
                } 
                  else {
                      $('#keyboard-shortcut-menu').hide();
                }

              return false;
            }
      });
  });