转贴标记：
http://www.webresourcesdepot.com/load-content-while-scrolling-with-jquery/
关键代码及实现思想：
- Content structure is like:
<div class="wrdLatest" id=9>content</div> <div class="wrdLatest" id=8>content</div>
- We create a function sending a query to a dynamic file with the DIV ID of the latest wrdLatest DIV (and also put a loader image):
function lastPostFunc()
{
$('div#lastPostsLoader').html('<img src="bigLoader.gif">');
$.post("scroll.asp?action=getLastPosts&lastID=" + $(".wrdLatest:last").attr("id"),
function(data){
if (data != "") {
$(".wrdLatest:last").after(data);
}
$('div#lastPostsLoader').empty();
});
};
- When a user scrolls down, we understand that the scroller is at the bottom with teh function below and fire the
lastPostFuncfunction.
$(window).scroll(function(){
if ($(window).scrollTop() == $(document).height() - $(window).height()){
lastPostFunc();
}
});
