Detect when scrollbar reaches top of div?

javascript, jquery, jquery-animate, scroll

Solution

Hope this helps

Used .scrollTop

$('#my_div').scroll(function() {
    var pos = $('#my_div').scrollTop();
    if (pos == 0) {
        alert('top of the div');
    }
});

DEMO

EDIT: better animation added to demo

Problem

I'm trying to animate a boxShadow on the scroll event of my #container div. Everything works except I can't figure out a good way to detect the scrollbar reaching the top so that the boxShadows can animate out. This is my code so far ``` $('#container').scroll( function() { $('#white').animate( { boxShadow: "0 8px 8px -7px #696868" }, "fast"); if ($('#container').scrollTop() == 0) { $('#white').animate( { boxShadow: "0 0 0 0 #696868" }, "fast"); } } ); ``` I've added a demo. The initial on scroll animate works perfectly, but when the bar returns to top their is a rather long delay before the second animation kicks in. http://jsfiddle.net/JYqC3/14/

Original source