multiple-opener.html | Explore in Territory

<!doctype html>
<html>
<script src="/common/PrefixedLocalStorage.js"></script>
<body onload="openNested()">
<script>
var prefixedLocalStorage = new PrefixedLocalStorageResource({
  close_on_cleanup: true
});
function openNested () {
  // Listen for message from opened context and pass through to this
  // context's opener
  window.addEventListener('message', (e) => {
    if (window.opener) {
      window.opener.postMessage({
        aux2: e.data, // From multipleOpenee
        aux1: { // This context
          name               : window.name,
          openerName         : window.opener.name,
          isTop              : window.top === window
        }
      }, '*');
    }
  });
  var a = document.createElement('a');
  a.target = 'multipleOpenee';
  a.href = prefixedLocalStorage.url('message-window-opener.html');
  document.body.appendChild(a);
  a.click();
}
</script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/html/browsers/windows/auxiliary-browsing-contexts/resources/multiple-opener.html