<!DOCTYPE html><head><meta charset="utf-8"><meta name="renderer" content="webkit"><title>js判断滚动条是否到底部</title><style> .bottom{...
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta name="renderer" content="webkit">
<title>js判断滚动条是否到底部</title>
<style>
.bottom{
width: 500px;
height: 50px;
position: fixed;
left: 50%;
margin-left: -250px;
top: 50%;
background: #f00;
color: #fff;
line-height: 50px;
text-align: center;
border-radius: 5px;
display: none;
}
</style>
<script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script>
<script>
var timer;
$(window).bind('scroll',function(){
clearTimeout(timer);
timer = setTimeout(function(){
if($(window).scrollTop()+$(window).height()==$(document).height()){
alert("已经到底部了");
$(".bottom").fadeIn();
}else{
$(".bottom").fadeOut();
}
},300)
});
</script>
</head>
<body>
<div style="width: 100%; height: 2000px;">
滚动到底部试试~！
</div>
<div class="bottom">滚动条，已经到底部了！</div>
</body>
</html>
