Bootstrap框架建立树形菜单(Tree)的实例代码

2019-11-19 15:01:59

字体：大中小

来源：转载

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这里的Tree指的是树形菜单，这篇文章通过一个实例来讲解一下，在Bootstrap框架下怎么去建立一个树形菜单。

前提：先添加Bootstrap和JQ的引用

<link rel="stylesheet" type="text/css" href="bootstrap-3.3.0-dist/dist/css/bootstrap.min.css" rel="external nofollow" ><script src="bootstrap-3.3.0-dist/dist/js/jquery-1.11.2.min.js"></script><script src="bootstrap-3.3.0-dist/dist/js/bootstrap.min.js"></script>

HTML CODE

<div class="tree well"> <ul> <li> <span><i class="icon-folder-open"></i> 廊坊师范学院</span>  <ul>  <li> <span><i class="icon-minus-sign"></i> 教育学院</span>   <ul>   <li> <span><i class="icon-leaf"></i> 学前教育</span> </li>   </ul>  </li>  <li> <span><i class="icon-minus-sign"></i> 物电学院</span>   <ul>   <li> <span><i class="icon-leaf"></i> 电气工程技术</span> </li>   <li> <span><i class="icon-minus-sign"></i> 电子信息科学技术</span>    <ul>    <li> <span><i class="icon-minus-sign"></i> 电子一班</span>     <ul>     <li> <span><i class="icon-leaf"></i> 宋笑</span> </li>     <li> <span><i class="icon-leaf"></i> 二盟</span> </li>     </ul>    </li>    <li> <span><i class="icon-leaf"></i> 电子二班</span> </li>    </ul>   </li>   <li> <span><i class="icon-leaf"></i> 物理学</span> </li>   </ul>  </li>  </ul> </li> </ul></div>

CSS CODE

（为树形菜单添加样式，使其符合Bootstrap框架的风格）

.tree { min-height:20px; padding:19px; margin-bottom:20px; background-color:#fbfbfb; border:1px solid #999; -webkit-border-radius:4px; -moz-border-radius:4px; border-radius:4px; -webkit-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05); -moz-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05); box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05)}.tree li { list-style-type:none; margin:0; padding:10px 5px 0 5px; position:relative}.tree li::before, .tree li::after { content:''; left:-20px; position:absolute; right:auto}.tree li::before { border-left:1px solid #999; bottom:50px; height:100%; top:0; width:1px}.tree li::after { border-top:1px solid #999; height:20px; top:25px; width:25px}.tree li span { -moz-border-radius:5px; -webkit-border-radius:5px; border:1px solid #999; border-radius:5px; display:inline-block; padding:3px 8px; text-decoration:none}.tree li.parent_li>span { cursor:pointer}.tree>ul>li::before, .tree>ul>li::after { border:0}.tree li:last-child::before { height:30px}.tree li.parent_li>span:hover, .tree li.parent_li>span:hover+ul li span { background:#eee; border:1px solid #94a0b4; color:#000}

JS CODE

<script type="text/javascript"> //为节点添加展开，关闭的操作$(function(){ $('.tree li:has(ul)').addClass('parent_li').find(' > span').attr('title', 'Collapse this branch'); $('.tree li.parent_li > span').on('click', function (e) {  var children = $(this).parent('li.parent_li').find(' > ul > li');  if (children.is(":visible")) {   children.hide('fast');   $(this).attr('title', 'Expand this branch').find(' > i').addClass('icon-plus-sign').removeClass('icon-minus-sign');  } else {   children.show('fast');   $(this).attr('title', 'Collapse this branch').find(' > i').addClass('icon-minus-sign').removeClass('icon-plus-sign');  }  e.stopPropagation(); });});</script>

效果：

这里写图片描述