On Nov 19, 2008, at 11:02 AM, Boris Zbarsky wrote:
Gavin Kistner wrote:
Section 6 states:
"The querySelector() method ... must ... return the first matching
Element node ***within the node’s subtree***." [1]
That's correct. The Element must be matching, and must be inside
the subtree rooted by the context node.
"Even though the method is invoked on an element, ***selectors are
still evaluated in the context of the entire document***.
This is also correct. Determining whether an Element is matching
does not use the context node in any way (modulo a possible :context
selector in the future).
I don't see a contradiction here.
Thank you for the confirmation that led to me re-examining what the
example was trying to show. I was assuming that the context of the
method receiver was used as the implicit root of the selector. I see
now that the entire document is searched but the result is intersected
with the receiver's subtree. (Though, of course, that may not be the
exact implementation.)
I officially withdraw my comment. (Perhaps I may think of and suggest
a way to make the example more clear. One way might be to have a
unique element as a child of the receiver div, and select that instead
of p elements.)
