Re: DOM-Parsing innerHTML/outerHTML and namespaces

Boris Zbarsky <[email protected]> Tue, 11 Nov 2014 16:01:51 -0500

Newsgroups	gmane.comp.web.dom.general
Message-ID	<[email protected]>

On 11/11/14, 1:58 PM, Dirk Schulze wrote:
> <html><svg><g></g></svg>
> <script>
> document.getElementsByTagName(â€™gâ€™)[0].innerHTML = â€œ<a></a>â€;
> </script>
> </html>
>
> Does that even parse?

Yes.

> Reading the spec, it probably should be parsed with the HTML parser

Yes, using https://html.spec.whatwg.org/#html-fragment-parsing-algorithm

> Which namespace does <a> have here?

The intent is for it to have the SVG namespace, but I can't figure out 
from the spec how that happens...

> <html><svg></svg>
> <script>
> document.getElementsByTagName(â€™svgâ€™)[0].outerHTML = â€œ<a></a>â€;
> </script>
> </html>
>
> Now we create <a> with the SVGSVGElement which has the SVG namespace, what namespace does <a> have?

The fragment parsing algorithm only looks at the context element it's 
passed, which in this case is the <html> element.  So the <a> gets 
created in the HTML namespace.

-Boris