求大神帮忙看下哪里出错了,实现不了滚动效果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>地狗购物网--网页定位导航效果</title>
<style>
*{
margin: 0;
padding: 0;
}
body{
font-size: 12px;
line-height: 1.7;
}
li{
list-style: none;
}
#content{
width: 800px;
margin: 0 auto;
padding: 20px;
}
#content h1{
color: #0088bb;
}
#content .item{
padding: 20px;
margin-bottom: 20px;
border: 1px dotted #0088bb;
}
#content .item h2{
font-size: 16px;
font-weight: bold;
border-bottom: 2px solid #0088bb;
margin-bottom: 10px;
}
#content .item li{
display: inline;
margin-right: 10px;
}
#content .item li a img{
width: 230px;
height: 230px;
border: none;
}
#menu{
position: fixed;
top: 100px;
left: 50%;
margin-left: 400px;
width: 80px;
}
#menu ul li a {
display: block;
margin: 5px 0;
font-size: 14px;
font-weight: bold;
color: #333;
width: 80px;
height: 50px;
line-height: 50px;
text-decoration: none;
text-align: center;
}
#menu ul li a:hover,
#menu ul li a.current{
color: #fff;
background-color: #0088bb;
}
</style>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.js"></script>
<script>
$(document).ready(function(){
//滚动条发生滚动
$(window).scroll(function(){
var top = $(document).scrollTop();
//console.log(top);
var menu = $("#menu");
var items = $("#menu").find(".item");
var currentId = "" //当前所在楼层(item)#id
items.each(function(){
var m = $(this);
var itemTop = m.offset().top;
//console.log(itemTop);
if (top > itemTop - 200){
currentId = "#" + m.attr("id");
}else {
return false;
}
});
//给相应的楼层的a设置current,取消其他链接的current
var currentLink = menu.find(".current");
if (currentId && currentLink.attr("href") != currentId){
currentLink.removeClass("current");
menu.find('[href=" + currentId + "]').addClass("current");
}
});
});
</script>
</head>
<body>
<div id="menu">
<ul>
<li><a href="#item1" class="current">1F 男装</a></li>
<li><a href="#item2">2F 女装</a></li>
<li><a href="#item3">3F 美妆</a></li>
<li><a href="#item4">4F 数码</a></li>
<li><a href="#item5">5F 母婴</a></li>
</ul>
</div>
<div id="content">
<h1>地狗购物网</h1>
<div id="item1" class="item">
<h2>1F 男装</h2>
<ul>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/1F.jpg" alt=""></a></li>
</ul>
</div>
<div id="item2" class="item">
<h2>2F 女装</h2>
<ul>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/2F.jpg" alt=""></a></li>
</ul>
</div>
<div id="item3" class="item">
<h2>3F 美妆</h2>
<ul>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/3F.jpg" alt=""></a></li>
</ul>
</div>
<div id="item4" class="item">
<h2>4F 数码</h2>
<ul>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
<li><a href="#"><img src="image/4F.png" alt=""></a></li>
</ul>
</div>
<div id="item5" class="item">
<h2>5F 母婴</h2>
<ul>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
<li><a href="#"><img src="image/5F.jpg" alt=""></a></li>
</ul>
</div>
</div>
</body>
</html>
