上拉刷新
<!DOCTYPE=html>
<html>
<head>
<script
src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var range = 300; //距下边界长度/单位px
var elemt = 500; //插入元素高度/单位px
var maxnum = 100; //设置加载最多次数
var num = 1;
var totalheight = 0;
var main = $("#content"); //主体元素
$(window).scroll(function(){
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());
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>");
main.append(`<div class="content col-sm-12 col-xs-12">
<div class="user-list">
<div class="user-li">
<div class="vip-sm">
<img class="img-circle" src="https://www.3dpunk.com/upload/170608/1706080422253992_60X60.png" alt="useravatar">
</div>
<div class="user-title">
<span><a href="">用户昵称</a></span>收藏了你的作品<span><a href="">作品的名字</a>到专辑名称</span><span>2017/10/04</span>
</div>
<div class="user-img">
<a href=""><img src="https://editor.3dpunk.com/uploads/thumb/2017/09/25/211950vuyck14c6uch6zch_120.png" alt=""></a>
</div>
</div>
</div>
</div>`);
num++;
}
});
});
</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>
</body>
</html>
