jquery下拉加载更多

var end=1;
		$(window).bind("scroll",function(){
			if($(document).scrollTop() + $(window).height() > $(document).height() - 100 && end != 0)// 接近底部100px
			{
				$(‘#next‘).html(‘加载中...‘);
				end=0;
				console.log("1");
				setTimeout(function(){
					end=1;
					$(‘#next‘).html(‘‘);
				},3000)
			}
		});