Page drop down to load more data (spring MVC)

var SEE_MORE={p:1,loading:false,hasData:true};
//Pull down to the end js to judge
    $(window).scroll(function () {
		   loadData();
	});
	function loadData() {
	    totalheight = parseFloat($(window).height()) + parseFloat($(window).scrollTop());
	    if ($(document).height() <= totalheight +300) {
	        // run when loaded
	        loadmore();
	            
	    }
	}

	<%//Load more%>
	function loadmore(){
		if(!SEE_MORE.loading&&SEE_MORE.hasData){
			SEE_MORE.loading = true;
			var path='${ctx}/liveClass/listMore';
			$.post(path+'?size=6&pageNum='+SEE_MORE.p,function(data){
				if($.trim(data)!=''){
					$('#courseContainer').append(data);
					
					SEE_MORE.p++;
				}
				SEE_MORE.loading = false;
			},'html');
		}
	};

 

<!-- Hidden field to get the number of pages, total/pageSize -->
<input type="hidden" value="${liveClassListCount/6 }" id="pageNumberId">

<div class="container">
	<ul class="live_list" id="courseContainer">
		<%@include file="live_list_more.jsp"%>
	</ul>
</div>

 live_list_more.jsp is the same as normal jsp, just get the parameters bound in the background