js实现目录链接,内容跟着目录滚动显示的简单实例

所属分类：网络编程 / JavaScript 阅读数： 1510

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如下所示：

<script> 
require(["jquery", "bootstrap"], function($) { 
$(function() { 
$('.left').height(($('body').height() > $(window).height()) ? $('body').height() : $(window).height()); 
}); 
var goTo = $(".con"); 
var guide = $(".sideGuide"); 
var guideLi = $(".sideGuide li"); 
var index = 0; 
var direct = 0; 
var goToFun = function() { 
var len = document.getElementById("box"+index).offsetTop-30; //获取div层到页面顶部的高度 
direct = 0; 
if (index < 0) { 
index = 0; 
return; 
} 
if (index >= guideLi.size()) { 
index = guideLi.size() - 1; 
return; 
} 
$("html,.tree").stop().animate({scrollTop: len}, 300, "swing", function() { 
direct = 0; 
}); 
guideLi.removeClass("on").eq(index).addClass("on"); 
} 
guideLi.each(function(i) { 
$(this).click(function() { 
index = guideLi.index($(this)); 
goToFun(); 
}) 
}); 
/* 滚轮事件 */ 
var scrollFunc = function(e) { 
e = e || window.event; 
if (e.wheelDelta) { 
direct += (-e.wheelDelta / 120); 
} else if (e.detail) { 
direct += e.detail / 3; 
} 
var first=document.getElementById("first").val(); 
if (direct >= first) { 
goToFun(index++); 
} 
if (direct <= 0-first) { 
goToFun(index--); 
} 
}; 
}); 
</script>

<style> 
 
 .return{padding-top:0.5em;} 
 .title{text-align:center;font-weight:bold;padding-bottom:1em;border-bottom:2px solid #eee;line-height:1em;} 
 .extend{text-align:center;color:#666;font-size:1.6em;line-height:3em;}  
 .content{line-height:2.2em;} 
 .content table{width:100%} 
 .left{background-color:#fff;}    
 .left .desc{color:#666;margin:2em 0;} 
 .left .list{line-height:3em;} 
 .left .list li{border-top: 1px solid #E4E1E1;} 
 .href{cursor: pointer;} 
 .lh2{line-height:2.4em;} 
 .lh2 li{border-top: 1px solid #eee;} 
 .tree{max-height:1000px;overflow-y: scroll;border: 1px solid #DDD;border-top: 0;border-left: 0;margin-top: 20px;} 
 .sub-title{margin:2em auto 1em;text-align: center;font-size: 20px;} 
 .on a{color:#000;font-weight: bold;} 

</style>

<body style=" position:fixed;" ondragstart="return false" onselectstart="return false" onkeypress="return false" oncontextmenu="return false"> 
<div class="container-fluid"> 
<div class="text-right return"> 
<a class="btn btn-default" href="javascript:history.back()">返回</a> 
</div> 
<h2 class="title">《日常管理机制》</h2> 
<div class="row"> 
<div class="col-sm-3 hidden-xs left" style="height: 1193px;"> 
<div class="container-fluid"> 
<h3>目录</h3> 
<div class="sideGuide"> 
<ul class="list-unstyled lh2"> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第一章 总则</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第二章 分校运营管理规定</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第三章 分校人员管理规定</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第四章 品牌管理规定</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第五章 分校宣传管理规定</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第六章 分校咨询管理规定</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第七章 分校教学管理规定</a> 
</span> 
</li> 
<li> 
<span class="text-muted"> 
<a href="javascript:void(0)">第八章 增设分校的管理规定</a> 
</span> 
</li> 
<li></li> 
</ul> 
</div> 
</div> 
</div> 
<div class="col-sm-9"> 
<div class="container-fluid" style="background-color:#f5f5f5"> 
<div class="tree mb40"> 
<div id="box0" class="con"> 
<div id="box1" class="con"> 
<div id="box2" class="con"> 
<div id="box3" class="con"> 
<div id="box4" class="con"> 
<div id="box5" class="con"> 
<div id="box6" class="con"> 
<div id="box7" class="con"> 
</div> 
<input id="first" type="hidden" value="8"> 
</div> 
</div> 
</div> 
</div> 
</body>

【效果预览】