| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Dynamic iframe</title> | |
| </head> | |
| <body> | |
| <script> | |
| const ifr = document.createElement("iframe"); | |
| ifr.setAttribute("src", "invalid"); | |
| document.body.appendChild(ifr); | |
| ifr.contentWindow.document.open("text/html", "replace"); | |
| ifr.contentWindow.document.write("foo"); | |
| ifr.contentWindow.document.close(); | |
| </script> | |
| </body> | |
| </html> |