postMessage_idn_helper.html

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<!DOCTYPE html>

<html>

<head>

  <title>postMessage IDN test page</title>

  <script type="application/javascript">

    function receiveMessage(evt)

      var response = "idn-response";

      if (!(evt instanceof MessageEvent))

        response += " not-a-MessageEvent";

      if (evt.origin !== "http://mochi.test:8888")

        response += " wrong-sender-origin(" + evt.origin + ")";

      if (evt.data !== "idn-message")

        response += " wrong-data(" + evt.data + ")";

      if (evt.lastEventId !== "")

        response += " wrong-lastEventId(" + evt.lastEventId + ")";

      if (evt.source !== window.parent)

        response += " wrong-source";

      if (evt.target !== window)

        response += " wrong-target";

      if (evt.type !== "message")

        response += " wrong-type(" + evt.type + ")";

      evt.source.postMessage(response, evt.origin);

    window.addEventListener("message", receiveMessage);

    function setup()

      var target = document.getElementById("location");

      target.textContent = location.hostname + ":" + (location.port || 80);

    window.addEventListener("load", setup);

  </script>

</head>

<body>

<h1 id="location">No location!</h1>

</body>

</html>