Bug 129316

Summary:	Setting `element.id = null` should not remove the `id` attribute
Product:	WebKit	Reporter:	Mathias Bynens <mathias>
Component:	DOM	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED CONFIGURATION CHANGED
Severity:	Normal	CC:	ahmad.saleem792, ap, bfulgham, mathias, rniwa
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified
URL:	data:text/html,<p%20id=x></p><script>var%20el%20=%20x;%20el.id%20=%20null;%20document.write(el.id%20===%20'null'%20?%20'PASS'%20:%20'FAIL')</script>

Description Mathias Bynens 2014-02-25 10:07:07 PST

Setting `element.id = null` should have the same result as `element.id = 'null'`. In Safari, this remove the `id` attribute instead.

Test case:

data:text/html,<p%20id=x></p><script>var%20el%20=%20x;%20el.id%20=%20null;%20document.write(el.id%20===%20'null'%20?%20'PASS'%20:%20'FAIL')</script>

Chrome, Opera, and Firefox get it right.

Comment 1 Ahmad Saleem 2022-08-09 15:36:26 PDT

I took the test case from Comment 0 and replaced %20 with Space and then changed it into JSFiddle:

Link - https://jsfiddle.net/cwdjomup/

It shows "PASS" for all browsers (Chrome Canary 106, Firefox Nightly 105 and Safari 15.6 on macOS 12.5). I think something along the line fixed it. So I am marking this as "RESOLVED CONFIGURATION CHANGED". Thanks!