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Test Info:
<script>↩
function onLoad() {↩
const data = document.querySelector("data");↩
const source = document.querySelector("source");↩
// For emulating the traditional behavior, collapse Selection to end of the↩
// <data> which is the deepest last child (and a container) of the <body>.↩
getSelection().collapse(data, data.childNodes.length);↩
source.appendChild(↩
document.body.firstChild // The invisible text node↩
);↩
getSelection().setBaseAndExtent(↩
data.appendChild(source),↩
0,↩
source,↩
1↩
);↩
document.querySelector("audio")↩
.addEventListener("DOMCharacterDataModified", () => {↩
getSelection().removeAllRanges()↩
});↩
document.execCommand("delete");↩
}↩
</script>↩
<body onload="onLoad()">↩
<audio>↩
<li contenteditable>↩
<data>↩
<source>↩