<!DOCTYPE html><html><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1"><title>Querying keyframes for an effect in a removed iframe should not crash</title><linkrel="help"href="https://www.w3.org/TR/web-animations-1/#dom-keyframeeffect-getkeyframes"></head><body><divid="target"></div><iframeid="iframe"></iframe></body><scripttype="text/javascript">consttarget=document.getElementById('target');constiframe=document.getElementById('iframe');constkeyframes=[{background:'green'},{background:'blue'},];consteffect=newiframe.contentWindow.KeyframeEffect(target,keyframes);iframe.parentNode.removeChild(iframe);constresult=effect.getKeyframes();</script></html>