Source code
Revision control
Copy as Markdown
Other Tools
<!doctype html>
<body>
<script src="/speculation-rules/prerender/resources/utils.js"></script>
<script>
const prerenderChannel = new PrerenderChannel('iframe-channel');
const initial_prerendering = document.prerendering;
document.addEventListener('prerenderingchange', () => {
prerenderChannel.postMessage('document.prerendering changes to ' +
`${document.prerendering} from ${initial_prerendering}`, '*');
prerenderChannel.close();
});
prerenderChannel.postMessage('onload');
</script>
foobar
</body>