[thelist] Custom HTML Attributes and W3C

[James Aylard]

Stephen Rider wrote:
> This, of course, means that you /could/ in theory create your own
> custom DTD that includes your custom tags.  It seems it would be a lot
> of work, however, unless you have a very specific reason to need to do
> this.  Browsers, of course, would not support your custom tags.

    However, the original question involved the use of custom _attributes_,
not tags (or elements). Internet Explorer since version 4 has supported
custom attributes under the moniker "expando properties" [1]. Using expando
properties on the Internet would probably not be advisable, of course, but
within the context of an Intranet they can be quite useful.

1.
http://msdn.microsoft.com/workshop/author/dhtml/reference/properties/expando.asp

James Aylard