iframe_slow_onload_inner.html (562B)
1 <html> 2 <head> 3 <script> 4 function load() { 5 // Let the test page know that it can try to navigate. 6 top.postMessage("onload", "*"); 7 // We're starting an infinite loop, but we need to time out after a 8 // while, or the loop will keep running until shutdown. 9 let t0 = performance.now(); 10 while (performance.now() - t0 < 5000) { 11 document.getElementById("output").innerText = Math.random(); 12 } 13 } 14 </script> 15 </head> 16 <body onload="load()"> 17 <p id="output"></p> 18 </body> 19 </html>