XML namespace: Difference between revisions

Revision as of 23:44, 11 August 2007

Revision as of 16:05, 28 August 2007

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<pre><nowiki>xmlns="http://www.w3.org/1999/xhtml"</nowiki></pre>

Note, however, that the URI is not actually read as an online address; it is simply treated by an XML parser as a string. For example, [http://www.w3.org/1999/xhtml http://www.w3.org/1999/xhtml] itself does not contain any code, it simply describes the [[xhtml]] namespace to human readers. Using a URIURL (such as <nowiki>"http://www.w3.org/1999/xhtml"</nowiki>) to identify a namespace, rather than a simple string (such as "xhtml"), reduces the possibility of different namespaces using duplicate identifiers. Namespace identifiers need not follow the conventions of web addresses, though they often do.

The declaration can also include a short prefix with which elements and attributes can be identified, e.g.: <pre><nowiki>xmlns:xhtml="http://www.w3.org/1999/xhtml"</nowiki></pre>