Thread:Project:Support desk/Loading a page progressively

When you visit an external site like this (at ScienceDirect), you see that the paper is loaded progressively. Initially it just shows an abstract. Then, as you scroll down, it loads the next sections, one by one. I reckon such feature could be useful to some Wikimedia projects with large articles (Wikipedia, Wikisource, at least). Is there an extension which does this?