bug1382568-iframe.html (274B)
1 <!doctype html> 2 <iframe src="http://example.com/doesnt-matter-because-it-gets-blocked-due-to-mixed-content"></iframe> 3 <script> 4 window.addEventListener('load', function(){ 5 window[0].document.body.innerText; 6 window.parent.postMessage({ result: "ok" }, "*"); 7 }); 8 </script>