| <!DOCTYPE html> |
| <title>Crash updating a CSS animation after setting its effect to null</title> |
| |
| <style> |
| @keyframes anim { |
| from { |
| margin-left: 0px; |
| } |
| to { |
| margin-left: 100px; |
| } |
| } |
| </style> |
| |
| <div id="box" style="width:100px; height: 100px; background: black; animation: anim 1s"></div> |
| <p>This should not crash</p> |
| |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| const animation = box.getAnimations()[0]; |
| animation.effect = null; |
| // Cause an update of the CSS animation by changing the duration. |
| box.style.animationDuration = "2s"; |
| </script> |
