直接贴代码,注意要设置好两个高度,控制好div在何高度显示,何处隐藏。原代码里的固定定位可能会产生影响,导致此方法不能使用。`
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>testmenu</title>
<style type="text/css">
*{margin:0;padding: 0}
body{height:3900px;}
.yapiskan{
height: 80px;
background-color:#e74c3c;
color:white;
font-size:24px;
width: 100%;
text-align:center;
transition:top .5s;
}
.yya{
position:fixed;
left:0;
top:0;
}
.gizle{top:-90px;}
.sabit{top:0;z-index:9999;}
.toper{height: 400px;width: 100%;background-color: #D0EAF1;}
</style>
</head>
<body>
<div class="toper">
<p>bulabulabulabulabula this is for myself</p>
</div>
<div class="yapiskan">hello this is a menu test</div>
</body>
<script src="http://www.jq22.com/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
var h1 = 400;
var h2 = 480;
var ss = $(document).scrollTop();
$(window).scroll(function(){
var s = $(document).scrollTop();
if(s< h1){
$('.yapiskan').removeClass('yya');
}if(s > h1){
$('.yapiskan').addClass('yya');
}if(s > h2){
$('.yapiskan').addClass('gizle');
if(s > ss){
$('.yapiskan').removeClass('sabit');
}else{
$('.yapiskan').addClass('sabit');
}
ss = s;
}
});
});
</script>
</html>
`