| <!DOCTYPE html> | |
| <html> | |
| <script> | |
| function addImage() { | |
| let img = document.createElement('img'); | |
| img.onload = () => top.postMessage('img loaded', '*'); | |
| img.onerror = () => top.postMessage('img blocked', '*'); | |
| img.src = '/content-security-policy/support/pass.png'; | |
| document.body.appendChild(img); | |
| } | |
| </script> | |
| <body onpageshow="addImage();"> | |
| </body> | |
| </html> |