document-open.html (333B)
1 <script> 2 onload = () => { 3 document.write(` 4 <script> 5 try { 6 document.domain = document.domain; 7 parent.postMessage('document-domain-is-allowed', '*'); 8 } catch (error) { 9 parent.postMessage('document-domain-is-disallowed', '*'); 10 } 11 </sc`+`ript> 12 `); 13 } 14 </script>