[whatwg] Re: Performance of rich internet applications
malcolm-what at farside.org.uk
Tue Jun 8 10:27:39 PDT 2004
> I think something we should be careful on is the performance of whatever
> emulation layer we find is necessary in IE 6 to support these specs.
> I've worked with other cross-browser emulation layers, some written in
Note that for Web Forms 2 particularly, the simpler parts are intended to be
allowed to degrade 'automatically' to less-rich equivalents.
For example, on IE6, an '<input type="email">' will be treated as '<input>',
i.e., an untyped text field. So while a Web Forms 2-compliant UA might
provide a special control for this type of input (possibly allowing the user
to select contacts from their address list), a non-compliant UA will not
require any special client-side handling.
This is the same philosophy espoused by CSS, whose properties are designed
to be both 'hints' (hence not critical) and backward-compatible (in the
sense that the default behaviour of the property is usually the one carried
out by a UA that does not implement the property). But I digress.
One part of Web Forms 2 that will require client-side assistance is the
replication model (there may be other parts; I've not checked a recent
copy). I note that the spec describes creation of a client-side library as
'an exercise for the reader'.
I wonder if, instead, development of a BSD-licensed IE6-compatible
replication model) should be included in the delivery of Web Forms 2?
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