瀑布流下滑发送ajax

    <!DOCTYPE=html>
    <html>
    <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
    <script src="./jquery-1.8.2.min.js" type="text/javascript"></script>


    </head>
    <body>
    <div id="content" style="height:960px">
        <div id="follow">
        this is a scroll test;
        <br/> 页面下拉自动加载内容
        </div>
        <div style='border:1px solid tomato;margin-top:20px;color:#ac1;height:800px' >hello world test DIV
        </div>
    </div>
    </body>
    </html>

    <script type="text/javascript">
        $(function(){
            // alert($(document).height());
            var range = 50; //距下边界长度/单位px
            var elemt = 500; //插入元素高度/单位px
            var maxnum = 20; //设置加载最多次数
            var num = 1;
            var totalheight = 0;
            var main = $("#content"); //主体元素
            $(window).scroll(function(){
                alert( $(window).height() );
            var srollPos = $(window).scrollTop(); //滚动条距顶部距离(页面超出窗口的高度)
            //console.log("滚动条到顶部的垂直高度: "+$(document).scrollTop());
            //console.log("页面的文档高度："+$(document).height());
            //console.log('浏览器的高度：'+$(window).height());
            // alert(srollPos);
            totalheight = parseFloat($(window).height()) + parseFloat(srollPos);
            if(($(document).height()-range) <= totalheight && num != maxnum) {
            main.append(
                "<div style='border:1px solid tomato;margin-top:20px;color:#ac"+(num%20)+(num%20)+";height:"+elemt+"' >hello world"+srollPos+"---"+num+"</div>"
                );
            num++;
            }
            });
        });
    </script>

瀑布流下滑 发送ajax

瀑布流下滑发送ajax