[whatwg] Markup for Web Forms 2.0 that still requires discussion
mattraymond at earthlink.net
Tue Jul 6 12:03:19 PDT 2004
Ian Hickson wrote:
> The point is that you _don't_ want it to be ignored. You want it to be
> ignored on WF2 UAs, and not in legacy UAs.
> So effectively it's a "conditional comment", except that the condition is
> "supports the <ignore> element" (or attribute, whichever).
> It is basically equivalent to <legacy value="Web Forms 2.0">. See:
Okay, how about a slightly different solution:
<input type="text" id="combo1" name="combo1" list="myList" />
<fallback id="combo1" attrib="list">
<label for="myList"> or select from the list: </label>
<select id="myList" name="combo1">
The <fallback> element would only render when the "list" attribute
for element "combo1" is not correctly processed by the user agent. It
would of course render when the |list| attribute isn't supported on the
system, but it would also render if |list| had an invalid value. If the
element referenced by |id| is itself unsupported, <fallback> will render
in that situation as well.
Any UA implementing <fallback> need not provide a mechanism for what
standards it supports. It need only verify that it could not process a
specific element and/or attribute. In this way, the user doesn't even
have to know what standard the element or attribute belongs to.
Is this sufficient?
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