I'm simply trying to do something once the scroll position of the page reaches a certain height. However scrollTop() is returning 0 or null no matter how far down I scroll. This is the help function I'm using to check the scrollTop() value:
$('body').click(function(){
var scrollPost = $(document).scrollTop();
alert(scrollPost);
});
我试着把scrollTop()和$('body')、$('html')，当然还有$(window)连接起来，但没有任何变化.
有什么主意吗？