Source code
Revision control
Copy as Markdown
Other Tools
<!DOCTYPE html>
<style>
iframe {
width: 300px;
height: 150px;
border: none;
}
</style>
<iframe src="http://{{domains[www2]}}:{{ports[http][0]}}/intersection-observer/resources/v2-subframe.html"></iframe>
<script>
window.addEventListener("message", event => {
requestAnimationFrame(() => setTimeout(() => {
document.querySelector('iframe').contentWindow.postMessage(event.data, "*");
}));
});
</script>