<!DOCTYPE html> | |
<html> | |
<body> | |
<p elementtiming='text'>Text</p> | |
<script> | |
const observer = new PerformanceObserver(entryList => { | |
window.parent.triggerTest(entryList.getEntries()[0]); | |
}); | |
observer.observe({type: 'element', buffered: true}); | |
</script> | |
</body> | |
</html> |