> Does it makes sense? I think it could make sense for some frameworks like RichFaces, java technology that uses Ajax to replace junks of HTML that needs to be updated because of a change in the state of a component in the server. But I also think that is much more efficient to just replace the whole piece of HTML that the component represent, instead of finding which piece of it changed, since doing that would demand processing that replacing the whole HTML piece wouldn't. And if you're thinking about receiving a bigger piece of HTML (almost the whole page), then as Samuel said, you're missing the point of the AJAX technology.
> (..) 'cause they aren't replaced! It would be much more easier to just find which element of the form needs to be updated and append some text around it or change its properties to notify the user.
