Opposite of “scrollTop” in jQuery

Question

jQuery has a function called scrollTop which can be used to find the number of pixels hidden above the current page view.

I\'m not really sure why, but there is no s

Answer 1

As scrollTop's default behaviour scrolls to 0 when passing a negative value, I did this function that handles scrollTop and simulate a "scrollDown".

If anchor_pos is negative (so it's above my current scroll position), I subtract its value from current scroll position (as it has a negative value, I'm using + sign)

function jumpToAnchor(scrollable_div_selector, anchor_selector)
{
    anchor_pos = $(anchor_selector).position().top;

    //check if negative number
    if (anchor_pos < 0)
    {
        anchor_pos = $(scrollable_div_selector).scrollTop() + anchor_pos; //anchor_pos is negative, so i'm substracting it
    }

    $(scrollable_div_selector).scrollTop(anchor_pos);
}