| <DOCTYPE html> |
| <html> |
| <body> |
| <script src="../../../resources/js-test.js"></script> |
| <script> |
| description("Event listeners are to be removed with immediate effect by document.open()"); |
| |
| const frame = document.body.appendChild(document.createElement("iframe")); |
| let once = false; |
| frame.contentDocument.addEventListener("x", () => { |
| frame.contentDocument.open(); |
| once = true; |
| }); |
| frame.contentDocument.addEventListener("x", function() { |
| testFailed("second event listener not removed") |
| }); |
| frame.contentDocument.dispatchEvent(new Event("x")); |
| shouldBeTrue("once"); |
| frame.contentDocument.close(); |
| </script> |
| </html> |
