Ok, this is what exactly I wanted to mention but did not, in order not
to make a moot point...
Indeed, dom tree has 4 singletons (not one) :
html, head, document and body + window (aka host) which is not a dom
node "per se".
Whatever the "users are expecting". jQuery "holds" only one: a
document. The whole issue that is arising (and will arise more and
more) is coming from the fact that a number of "$ scouts" is climbing
the dom tree without much care for each other (not to mention the
tree).
As more and more different jquery instances and more and more jquery
plugins are present, the "web client" situation is edging towards a
very complicated one. Especially as "single page ajax app" is "en
vogue".
W3C comitee is very well aware of this, since 1999. This is why
MutationEvents have been introduced.
When and if this will become an real issue, is for you (John) to
decide. I am just trying to help. I hope.
--DBJ
PS: This issue is waiting "in the ambush" for all the other javascript
frameworks. Maybe this framework, is well positioned to start solving
it now?
On Dec 21, 4:40 pm, John Resig <jere...@gmail.com> wrote:
> > $()
> > $("html")
> > $( document )
>
> All three of those things point to different things so it doesn't make
> sense to have it be a "singleton".
>
> The first gives you an empty set, the second is a set containing the
> document element, the third is a set containing the document.
>
> The only case we could (presumably) optimize for would be jQuery(
> document ) but in attempting to do that a while back (back when
> rootQuery was introduced) it proved to have a number of unforeseen
> consequences (namely that users expect the results being returning
> from jQuery to be unique).
>
> As it is, we've made the one optimization that we can make (speeding
> up jQuery("someselector") by not having to call jQuery(document) every
> time) and I think that's fine.
>
> --John
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