For example, embedded FB post. In React you can deal with it using componentShouldUpdate and others. I don't know how to deal with it in virtual-dom (package), without going deep into patching algorithm.
19 karma · joined July 16, 2014
By the way, virtual-dom is a little bit early to use for production application. For example, if you have some elements in your vdom, that are changing after you render it (i.e. like buttons, embeded posts, etc.), virtual-dom will be totally confused and unpredictable. For example, it can duplicate some elements on the page.
I believe it happens because vdom depends on its internal index to traverse real dom nodes. It is still a remarkably good piece of software.