On Fri, Jul 1, 2011 at 3:47 PM, Rafael Weinstein <rafa...@google.com> wrote: > > If you want to discover mutations to nodes while outside the tree, > then having a single subtree observer isn't sufficient. You'll need an > attribute observer registered on all elements reachable from the root. > I believe this is the same with both proposals. >
I don't think that's what he meant. He's saying that it's useful to distinguish a node that's been removed from the document in order to insert it to somewhere else (i.e. the node was attached to the document prior to the insertion) from a node that was not attached to the document prior to the insertion. - Ryosuke