file_bug1550792.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

</head>

<body>

  <iframe id="nestframe"></iframe>

<script>

  let nestframe = document.getElementById("nestframe");

  window.addEventListener("message", (event) => {

    parent.postMessage(event.data, "*");

    // Only create second iframe once

    if(event.data.type === "https") {

      return;

    nestframe.contentDocument.body.innerHTML = `

        <iframe id="frametwo"

          src=\"https://example.com\"

          onload=\"parent.postMessage({status:'loaded', type: 'https'}, '*')\"

          onerror=\"parent.postMessage({status:'blocked', type: 'https'}, '*')\"

        ></iframe>`;

});

  nestframe.onload = (event) => {

    nestframe.contentDocument.body.innerHTML = `

      <iframe id="frameone"

        src=\"http://example.com\"

        onload=\"parent.postMessage({status:'loaded', type: 'http'}, '*')\"

        onerror=\"parent.postMessage({status:'blocked', type: 'http'}, '*')\"

      ></iframe>`;

  nestframe.src = "about:blank";

</script>

</body>

</html>