scrollTop() returns 0 in chrome

Question

I want to check if page is scrolled after it has finished loading and I'm using this code:

$(document).ready(function(){   
    alert($(window).scrollTop());
});

It works well in Firefox but allways returns 0 in Chrome. Why is this?

Answer 1

Actually Firefox is the only browser that doesn't return 0 for $(window).scrollTop() on domReady or window.onload. Chrome, Safari and IE all return 0. The only safe way to get correct position of scrollbar on domReady is, as mentioned in another answer above, to set an event handler on window's scroll event as below:

$(document).ready(function(){   
    $(window).scroll(function() {
        console.log($(window).scrollTop());
        $(window).unbind('scroll');
    });
});

Answer 2

$(window).scrollTop() will return 0 when the window isn't scrollable.