Lachlan Hunt wrote:
Mike Wilson wrote:
My first priority would be "Matches Selector", and see to that
it fulfills the needs for event delegation.
Is there any special functionality that would be needed to achieve
this? If I understand correctly, event delegation just needs to be
able to check whether the event target element matches a given
selector. So it would be something like:
if (evt.target.matchesSelector(".foo>input.bar")) {
...
}
In case it isn't obvious, we may want to check every element in the
event path. i.e. all ancestors of evt.target.
If matchesSelector could be called with a context element then it would
become a more powerful version of compareDocumentPosition(). It is also
more limited because you can't do preceding-siblings.
Examples
I'll use the :scope pseudo-class, although :context would be a better name.
elt.matchesSelector(":scope *", context); // descendant
elt.matchesSelector(":scope > * *", context); // descendant but not child
elt.matchesSelector(":scope ~ *", context); // following-sibling
elt.matchesSelector(":scope ~ * > *", context); // nephew (child of a
following-sibling)
I would probably use it if it was there, but wouldn't complain if it
wasn't.
