[jQuery] Templating in attr and css?

[jQuery] Templating in attr and css?

Hey guys,
So I've been lobbying for syntax along the following lines:
$(...).attr("foo", "{{width() > 40 ? 'bar' : 'baz'}}")
or
$(...).attr("target", "{{rel}}")
which would basically expand to:
$(...).attr("foo", function() {
  return this.width() > 40 ? "bar" : "baz";
});
and
$(...).attr("target", function() {
  return this.rel;
});<br clear="all">respectively.
I personally feel like this would be a very nice feature, and recall people asking about it on the list, but I can't come up with any compelling use-cases on-the-fly.
If you think this would be useful, and want it in 1.2, can you reply to this post with a specific use-case that you could see using in real-life? I really want to get this into 1.2, but it requires some proof of use ;)
--
Yehuda Katz
Lead Developer | Procore Technologies
(ph)  718.877.1325