| <body> | |
| <iframe width=300px height=300px></iframe> | |
| <script> | |
| var url = window.location.href; | |
| url = url.replace(/a\.com/, "b.com"); | |
| url = url.replace(/oopif\.html/, "oopif_frame.html"); | |
| document.querySelector('iframe').setAttribute('src', url); | |
| </script> | |
| </body> |