Fennec addon handle scrolling and get scroll position

Question

I added callback function that is calling when page is scrolling

function scroll (event) {
    this.pageXOffset
}

When I try to gen this.pageXOffset always return 0.

How can I get current scroll position or current page rect ...?

That is horizontal scroll. Are you sure you aren't after vertical scrolling (`.scrollY`/`.pageYOffset`)? — nmaier, Jun 18 '14 at 15:42
Thanks for reply. My problem is that all pageYOffset, scrollY and others returns always 0. How can I get some scrolling data. — Misha, Jun 19 '14 at 07:59

score 0 · Answer 1 · answered Jun 19 '14 at 10:09

The event parameter in

Function scroll (event)

Is [object XrayWrapper [object UIEvent]]

So we can retrieve current window object using next line:

let wnd = XPCNativeWrapper.unwrap(event.currentTarget.content);

Then we can simply use wnd.pageXOffset And it returns correct value.

1 Answers1