日期:2014-05-16  浏览次数:20438 次

关于jQuery滚动页面改变导航状态
请您指导下,谢谢了! 
源码如下: 
JScript code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>test</title> 
<style type="text/css"> 
body,ul,li{margin:0;padding:0;list-style:none;font-size:12px;}a{color:#fff;text-decoration:none;} 
#nav{width:100px;position:fixed;} 
#nav li{width:100px; background:#666;height:30px;line-height:30px;margin-bottom:10px; cursor:pointer;} 
#nav li.hover{background:#000;} 
#boxWrap{margin-left:100px;} 
.box1{height:500px;background:#f00;} 
.box2{height:1000px;background:#0F0;} 
.box3{height:1200px;background:#3FF;} 
.box4{height:800px;background:#00F;} 
</style> 
<script type="text/javascript" src="jquery.js"></script> 
<script type="text/javascript"> 
//<![CDATA[ 
$(function(){ 
var $li = $('#nav>li'); 
$li.eq(0).addClass("hover"); 
$li.click(function(){ 
var index = $(this).index(), 
     divHeight = $("#boxWrap").children("div:eq("+index+")").offset().top; 
$(this).addClass("hover").siblings().removeClass("hover"); 
$("body,html").animate({'scrollTop':divHeight},600); 
}); 
}); 
//]]> 
</script> 


</head> 

<body> 
<ul id='nav'> 
<li><a href="#">test</a></li> 
<li><a href="#">test</a></li> 
<li><a href="#">test</a></li> 
<li><a href="#">test</a></li> 
</ul> 
<div id="boxWrap"> 
<div class="box1"></div> 
<div class="box2"></div> 
<div class="box3"></div> 
<div class="box4"></div> 
</div> 
</body> 
</html> 


现在该怎么判断滚动到相应的div的时候让导航上相应的选项也高亮?就像腾讯QQ空间的那个时间轴

------解决方案--------------------
参考:
HTML code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>test</title> 
<style type="text/css"> 
body,ul,li{margin:0;padding:0;list-style:none;font-size:12px;}a{color:#fff;text-decoration:none;} 
#nav{width:100px;position:fixed;} 
#nav li{width:100px; background:#666;height:30px;line-height:30px;margin-bottom:10px; cursor:pointer;} 
#nav li.hover{background:#000;} 
#boxWrap{margin-left:100px;} 
.box1{height:500px;background:#f00;} 
.box2{height:1000px;background:#0F0;} 
.box3{height:1200px;background:#3FF;} 
.box4{height:800px;background:#00F;} 
</style> 
<script type="text/javascript" src="jquery.js"></script> 
<script type="text/javascript"> 
//<![CDATA[ 
$(function(){ 
var $li = $('#nav>li'); 
$li.eq(0).addClass("hover"); 
$li.click(function(){ 
var index = $(this).index(), 
     divHeight = $("#boxWrap").children("div:eq("+index+")").offset().top; 
$(this).addClass("hover").siblings().removeClass("hover"); 
$("body,html").animate({'scrollTop':divHeight},600); 
}); 

// 找到boxWrap下面几个div的定位
var boxPosition = {};
$("#boxWrap div").each(function(){
    boxPosition[$(this).attr("class")] = $(this).offset().top;
});

$(window).bind("scroll", function(){
    // 当前滚动条滚动的高度
    var curScro