bootstrap導航條--三級選單
阿新 • • 發佈:2019-01-25
效果如下:
第一步,插入相關的js和css檔案
<link rel="stylesheet" href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css"/>
<script type="text/javascript" src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script> <script type="text/javascript" src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
第二步,單獨的一個css樣式
.dropdown-submenu {
position: relative;
}
.dropdown-submenu > .dropdown-menu {
top: 0;
left: 100%;
margin-top: -6px;
margin-left: -1px;
-webkit-border-radius: 0 6px 6px 6px;
-moz-border-radius: 0 6px 6px;
border-radius: 0 6px 6px 6px;
}
.dropdown-submenu:hover > .dropdown-menu {
display: block;
}
.dropdown-submenu > a:after {
display: block;
content: " ";
float: right;
width: 0;
height: 0;
border-color: transparent;
border-style: solid;
border-width: 5px 0 5px 5px;
border-left-color: #ccc;
margin-top: 5px;
margin-right: -10px;
}
.dropdown-submenu:hover > a:after {
border-left-color: #fff;
}
.dropdown-submenu.pull-left {
float: none;
}
.dropdown-submenu.pull-left > .dropdown-menu {
left: -100%;
margin-left: 10px;
-webkit-border-radius: 6px 0 6px 6px;
-moz-border-radius: 6px 0 6px 6px;
border-radius: 6px 0 6px 6px;
}
第三步,HTML程式碼
<div class="container">
<div class="row">
<h2>Bootstrap 3多級下拉選單</h2>
<hr>
<div class="dropdown">
<a id="dLabel" role="button" data-toggle="dropdown" class="btn btn-primary" data-target="#"
href="javascript:;">
下拉多級選單 <span class="caret"></span>
</a>
<ul class="dropdown-menu multi-level" role="menu" aria-labelledby="dropdownMenu">
<li><a href="javascript:;">一級選單</a></li>
<li><a href="javascript:;">一級選單</a></li>
<li class="divider"></li>
<li class="dropdown-submenu">
<a tabindex="-1" href="javascript:;">一級選單</a>
<ul class="dropdown-menu">
<li><a tabindex="-1" href="javascript:;">二級選單</a></li>
<li class="divider"></li>
<li class="dropdown-submenu">
<a href="javascript:;">二級選單</a>
<ul class="dropdown-menu">
<li><a href="javascript:;">三級選單</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
</div>
OK,廢話不多說,直接看程式碼吧,非常實用。