JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head>
  <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
  <button id="idButtonTrigger" onmouseover="TriggerEvent()">Hover to Trigger Event</button>
  <button id="idButtonDispatch" onmouseover="DispatchEvent()">Hover to Dispatch Event</button>
  <p>ClickListener: <a id="idClickListener"></a></p>
  <p>ClickBind: <a id="idClickBind"></a></p>
  <p>CustomListener: <a id="idCustomListener"></a></p>
  <p>CustomBind: <a id="idCustomBind"></a></p>

  <script type="text/javascript">

    document.addEventListener('click', function(event) {
      document.getElementById('idClickListener').innerHTML = "Fired!";
      $('#idClickListener').fadeIn('slow').fadeOut('slow');
    });

    $(document).bind('click', function(event) {
      document.getElementById('idClickBind').innerHTML = "Fired!";
      $('#idClickBind').fadeIn('slow').fadeOut('slow');
    });

    document.addEventListener('custom', function(event) {
      document.getElementById('idCustomListener').innerHTML = "Fired!";
      $('#idCustomListener').fadeIn('slow').fadeOut('slow');
    });

    $(document).bind('custom', function(event) {
      document.getElementById('idCustomBind').innerHTML = "Fired!";
      $('#idCustomBind').fadeIn('slow').fadeOut('slow');
    });

    function TriggerEvent() {
      $('#idButtonTrigger').trigger('click');

      // The trigger function below should also dispatch the custom event such that code using addEventListener can catch this custom event.
      // However, that is not happening. In fact, this is the only of the 8 combinations listed below that does not work.
      // We should fix this to allow better interoperability between jQuery event functions and W3C DOM event functions.
      // 1. PASS: If you trigger a DOM event you can catch it using the bind function
      // 2. PASS: If you trigger a DOM event you can catch it using the addEventListener function
      // 3. PASS: If you trigger a custom event you...