Nonsense script error when inserting new elements into DOM #11191

wxiaoguang · 2022-07-05T10:16:56Z

Steps to reproduce

<!DOCTYPE html>
<html>
<head>
	<script>
		window.addEventListener('error', function(e) {alert('error');});
	</script>
</head>
<body>

<div class="page-content">
</div>

<script>
	const pageContent = document.querySelector('.page-content');
	const el = document.createElement('div');
	el.textContent = 'dummy'; // required
	pageContent.append(el); // BUG, triggers the error event
	// setTimeout(()=>{pageContent.append(el);}, 0); // BUG, triggers the error event
	// setTimeout(()=>{pageContent.append(el);}, 500); // no bug .....
</script>
</body>
</html>

Expected behavior

No error event

Actual behavior

Nonsense error event

Device & build information

Device: iOS
Build version: Firefox Daylight 102.0 (11640) , including 101.x

┆Issue is synchronized with this Jira Task

wxiaoguang · 2023-12-14T17:02:08Z

Stale?

wxiaoguang added the Bug 🐞 This is a bug with existing functionality not behaving as expected label Jul 5, 2022

wxiaoguang mentioned this issue Jul 5, 2022

Script error always thrown on page load #10817

Open

wxiaoguang closed this as not planned Won't fix, can't repro, duplicate, stale Dec 14, 2023

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Nonsense script error when inserting new elements into DOM #11191

Nonsense script error when inserting new elements into DOM #11191

wxiaoguang commented Jul 5, 2022 •

edited by data-sync-user

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wxiaoguang commented Dec 14, 2023

Nonsense script error when inserting new elements into DOM #11191

Nonsense script error when inserting new elements into DOM #11191

Comments

wxiaoguang commented Jul 5, 2022 • edited by data-sync-user Loading

Steps to reproduce

Expected behavior

Actual behavior

Device & build information

wxiaoguang commented Dec 14, 2023

wxiaoguang commented Jul 5, 2022 •

edited by data-sync-user

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