child_script.html (280B)
1 <!doctype html> 2 <script src="/resources/channel.sub.js"></script> 3 <div id="test">FAIL</div> 4 <script> 5 (async function() { 6 await new Promise(resolve => onload = resolve); 7 document.getElementById("test").textContent = "PASS"; 8 await start_global_channel(); 9 })() 10 </script>