window.document.documentElement.namespaceURI | Huge DOM compatibility table

Browser	Version	Own?	Type	As String
AppleWebit	537.36.0	?	?	?
bingbot	2.0.0	?	?	?
BingPreview	1.0.0	?	?	?
BitSightBot	1.0.0	?	?	?
Chrome	13.0.863	?	?	?
Chrome	94.0.4606	inherited	string	http://www.w3.org/1999/xhtml
Chrome	95.0.0	?	?	?
Chrome	102.0.5005	inherited	string	http://www.w3.org/1999/xhtml
Chrome	103.0.0	?	?	?
Chrome	104.0.5112	inherited	string	http://www.w3.org/1999/xhtml
Chrome	105.0.0	?	?	?
Chrome	106.0.5249	inherited	string	http://www.w3.org/1999/xhtml
Chrome	107.0.0	?	?	?
Chrome	110.0.0	inherited	string	http://www.w3.org/1999/xhtml
Chrome	110.0.5449	?	?	?
Chrome	113.0.5672	inherited	string	http://www.w3.org/1999/xhtml
Chrome	114.0.0	?	?	?
CriOS	13.0.842	?	?	?
Edge	8.26144.0	?	?	?
Edge	105.0.1343	inherited	string	http://www.w3.org/1999/xhtml
Edge	106.0.1370	?	?	?
facebookexternalhit	1.1.0	?	?	?
Firefox	3.6.1	?	?	?
Firefox	100.0.0	inherited	string	http://www.w3.org/1999/xhtml
Firefox	102.0.0	?	?	?
Firefox	107.0.0	inherited	string	http://www.w3.org/1999/xhtml
Firefox	108.0.0	?	?	?
Firefox	116.0.0	inherited	string	http://www.w3.org/1999/xhtml
Firefox	117.0.0	?	?	?
FxiOS	9.3.0	?	?	?
FxiOS	36.0.0	inherited	string	http://www.w3.org/1999/xhtml
Googlebot	2.1.0	?	?	?
GSA	334.0.16777215	?	?	?
HeadlessChrome	90.0.4430	?	?	?
IE	11.0.0	?	?	?
Mobile	15.0.0	?	?	?
Opera	8.10.0	?	?	?
PerplexityBot	1.0.0	?	?	?
render	2.0.0	?	?	?
requests	2.32.3	?	?	?
Safari	3.0.5	?	?	?
Safari	13.1.1	inherited	string	http://www.w3.org/1999/xhtml
Safari	14.0.0	?	?	?
Safari	15.0.0	inherited	string	http://www.w3.org/1999/xhtml
Safari	15.1.0	?	?	?
SamsungBrowser	17.0.0	?	?	?
YandexBot	3.0.0	?	?	?
YandexRenderResourcesBot	1.0.0	?	?	?
Zeno	76.0.0	?	?	?

Properties	AppleWebit	bingbot	BingPreview	BitSightBot	Chrome	CriOS	Edge	facebookexternalhit	Firefox	FxiOS	Googlebot	GSA	HeadlessChrome	IE	Mobile	Opera	PerplexityBot	render	requests	Safari	SamsungBrowser	YandexBot	YandexRenderResourcesBot	Zeno