- From: Dieter Köhler <dieter.koehler@ppp.uni-bamberg.de>
- Date: Tue, 23 May 2000 18:04:18 +0200
- To: "www-dom@w3.org" <www-dom@w3.org>
Lars Marius Garshol wrote:
> 1. What is the result of
> document.createAttribute("a")._get_nodeValue()?
>
> Is it None or ""? As far as I can see neither of the level 1 and
> level 2 specs answer this question. None would be the most
> reasonable answer, methinks, but some implementations think
> otherwise.
...
> OpenXML: ""
Since Delphi does not treat wideStrings as ordinary objects I always
use an empty string where the DOM prescribes a null pointer. In my
opinion DOM 2 should explicitly allow this by modifying §1.1.5.
> 2. What is the result of calling
> element.removeAttribute("non-existent")?
>
> The specs (1 and 2) seem to say that nothing should happen, and that
> is my own interpretation.
I agree. The problem probably arises in some implementation, because
NamedNodeMap.removeNamedItem() will raise a NOT_FOUND_ERR exception,
i.e. if you use instead of the above example
element.attributes.removeNamedItem("non-existent") you should raise an
exception. So if an implementation just transforms a
removeAttribute() call into a removeNamedItem() call of the Element's
attribute list it is not conforming with the DOM spec.
Though it is a constant pitfall for implementations, the DOM WG
decided not to harmonize the NamedNodeMap- and the Element-calls,
because of backward compatibility.
--
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Dieter Koehler, M. A. - dieter.koehler@ppp.uni-bamberg.de
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Received on Tuesday, 23 May 2000 12:06:08 UTC