Is it possible to find distance from bottom to cuirrent scroll state in jquery

Question

SUpoose i am in the middle of page length.

Is it possible to find , how much more distance in length or pixels from bottom.

Like when scroll bar hits the bottom then its 0 but if it 500px from the bottom then i need that 500px value.

Thanks

Answer 1

It's not so precise but works:

var scrollPosition = window.pageYOffset;
var windowSize     = window.innerHeight;
var bodyHeight     = document.body.offsetHeight;

alert(Math.max(bodyHeight - (scrollPosition + windowSize), 0));