Google Canary Version 61 - body.scrollTop() is returning 0

[m-kuzev]

View-port detection is wrong on current canary and the scroll isn't working only with ('body')

[slavidim]

you need to create -> viewportStart_obj = document.scrollingElement ? document.scrollingElement : document.body;
Find this code -> viewportStart = $(scrollElem).scrollTop();
Replace for this -> viewportStart = viewportStart_obj.scrollTop;

[dirkgroenen]

This one should be fixed by merging the following PR: #55

[seltix5]

hello,
I dont understand why use the document.body to get the scrollTop(), I'm I wrong to think the document.body element represents the entire page and thus the scrollTop should be always 0? Why not use window instead? window should represent the browser viewport... right?
$(window).scrollTop(); works as expected.