How to get the height from the edge of the divs to the beginning of the document?

Question

JavaScript

I tried to watch these https://learn.javascript.ru/coordinates-document and these https://learn.javascript.ru/metrics materials but so far I don’t see an obvious way out
theoretically there is also this option
shpargalkablog.ru/2013/09/scroll -block.html
but I understand that I need to do this myself, since it will be possible to implement it more successfully than if I just copy

Answer 1

and this option does not show correctly? https://jsfiddle.net/42x0uvod/