iframe-script-modify-attr.html | Explore in Territory

<!DOCTYPE html>

<script>
window.addEventListener("message", (event) => {
  if (testRunner)
    testRunner.notifyDone();
});

window.onload = () => {
  if (testRunner)
    testRunner.waitUntilDone();
  var ifr = document.getElementById('ifr');
  ifr.scrolling = 'no';
  ifr.marginWidth = '50';
  ifr.marginHeight = '100';
  ifr.contentWindow.postMessage({}, '*');
};
</script>

<iframe id="ifr" scrolling="yes" style="width:200px;height:200px;"
  src="http://localhost:8000/misc/resources/iframe-big.html">
</iframe>

chromium/third_party/blink/web_tests/http/tests/misc/iframe-script-modify-attr.html