nested-post-to-opener.html | Explore in Territory

<body>
<script>
  var i = document.createElement("iframe");
  i.name = "nested1";
  document.body.appendChild(i);

  window.opener.postMessage({
    "name": window.name,
    "isTop": window.top === window
  }, "*");
</script>
</body>

chromium/third_party/blink/web_tests/external/wpt/html/browsers/windows/resources/nested-post-to-opener.html