<!DOCTYPE html>
<script src="include.js"></script>
<script>
function offsetParentOfChildDocument() {
const frameDocument = document.querySelector("iframe").contentDocument;
const frameRoot = frameDocument.documentElement;
document.documentElement.append(frameRoot);
document.dispatchEvent(new CustomEvent("offsetParentCalled", { detail: { iframeOffsetParent: frameRoot.offsetParent }}));
}
asyncTest(done => {
document.addEventListener("offsetParentCalled", event => {
println(`iframe offsetParent value: ${event.detail.iframeOffsetParent}`);
done();
});
});
</script>
<iframe srcdoc="
<script>
window.parent.offsetParentOfChildDocument();
</script>
">
