JS 判断滚动底部并加载更多效果。。。。。。。。。
<html lang="zh-cn">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>js网页滚动条滚动事件 </title>
<style type="text/css">
#top_div{
position:fixed;
bottom:80px;
right:0;
display:none;
}
</style>
<script type="text/javascript">
window.onscroll = function(){
var t = document.documentElement.scrollTop || document.body.scrollTop;
var top_div = document.getElementById( "top_div" );
var loading = document.getElementById("loading");
vv.innerHTML="document.body.scrollHeight:"+document.body.scrollHeight+" body offsetHeight:"+document.body.offsetHeight;
//scrollTop + clientHeight == scrollHeight
if( document.body.scrollTop+ document.body.clientHeight >= document.body.scrollHeight) {
top_div.style.display = "inline";
if(loading.style.display != "inline"){
loading.style.display = "inline";
count.value=(1+ parseInt(count.value));
setTimeout("addItem(count.value);",2000);
}
}
}
function addItem(i){
for(var j=0;j<10;j++){
var box = document.createElement("div");
content.appendChild(box);
box.style.cssText = "300px;font-size:12px;";
box.innerHTML="<a href='#'>..........."+ i+"</a>"
}
loading.style.display = "none";
}
</script>
</head>
<body>
<div id="vv"></div>
<br />
<a name="top">顶部<a>
<div id="top_div"><a href="#top">返回顶部</a></div>
<br />
<div id="content">
<a href="#">...........</a>
</div>
<br />
这里尽量多些<br />以便页面出现滚动条
<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />
<div id="loading" style="position:fixed;bottom:20px;line-height:40px;background-color: #F00;color: #fff; display:none;">
loaing............................................................................................................<input id="count" type='text' value="0"/>
</div>
</body>
</html>