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Bootstrap 下拉菜單
2021-10-15 13:47 更新
Bootstrap 下拉菜單（Dropdowns）
本章將重點(diǎn)介紹 Bootstrap 下拉菜單。下拉菜單是可切換的，是以列表格式顯示鏈接的上下文菜單。這可以通過(guò)與 下拉菜單（Dropdown） JavaScript 插件 的互動(dòng)來(lái)實(shí)現(xiàn)。
如需使用下拉菜單，只需要在 class .dropdown 內(nèi)加上下拉菜單即可。下面的實(shí)例演示了基本的下拉菜單：
<!DOCTYPE html><html><head>
<title>Bootstrap 實(shí)例 - 下拉菜單（Dropdowns）</title>
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="http://cdn.bootcss.com/jquery/2.1.1/jquery.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
<script src="http://cdn.bootcss.com/bootstrap/3.3.6/js/bootstrap.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script></head><body><div class="dropdown">
<button type="button" class="btn dropdown-toggle" id="dropdownMenu1"
data-toggle="dropdown">
主題 <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">Java</a>
</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">數(shù)據(jù)挖掘</a>
</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">
數(shù)據(jù)通信/網(wǎng)絡(luò) </a>
</li>
<li role="presentation" class="divider"></li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">分離的鏈接</a>
</li>
</ul></div></body></html>結(jié)果如下所示：
選項(xiàng)
對(duì)齊
通過(guò)向 .dropdown-menu 添加 class .pull-right 來(lái)向右對(duì)齊下拉菜單。下面的實(shí)例演示了這點(diǎn)：
<!DOCTYPE html><html><head>
<title>Bootstrap 實(shí)例 - 向右對(duì)齊下拉菜單</title>
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="http://cdn.bootcss.com/jquery/2.1.1/jquery.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
<script src="http://cdn.bootcss.com/bootstrap/3.3.6/js/bootstrap.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script></head><body><div class="dropdown">
<button type="button" class="btn dropdown-toggle" id="dropdownMenu1"
data-toggle="dropdown">主題 <span class="caret"></span>
</button>
<ul class="dropdown-menu pull-right" role="menu"
aria-labelledby="dropdownMenu1">
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">Java</a>
</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">數(shù)據(jù)挖掘</a>
</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">
數(shù)據(jù)通信/網(wǎng)絡(luò) </a>
</li>
<li role="presentation" class="divider"></li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">分離的鏈接</a>
</li>
</ul></div></body></html>結(jié)果如下所示：
標(biāo)題
您可以使用 class dropdown-header 向下拉菜單的標(biāo)簽區(qū)域添加標(biāo)題。下面的實(shí)例演示了這點(diǎn)：
<!DOCTYPE html><html><head>
<title>Bootstrap 實(shí)例 - 下拉菜單標(biāo)題</title>
<link rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" target="_blank" rel="stylesheet">
<script src="http://cdn.bootcss.com/jquery/2.1.1/jquery.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script>
<script src="http://cdn.bootcss.com/bootstrap/3.3.6/js/bootstrap.min.js" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></script></head><body><div class="dropdown">
<button type="button" class="btn dropdown-toggle" id="dropdownMenu1"
data-toggle="dropdown">
主題 <span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
<li role="presentation" class="dropdown-header">下拉菜單標(biāo)題</li>
<li role="presentation" >
<a role="menuitem" tabindex="-1" href="#">Java</a>
</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">數(shù)據(jù)挖掘</a>
</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">
數(shù)據(jù)通信/網(wǎng)絡(luò) </a>
</li>
<li role="presentation" class="divider"></li>
<li role="presentation" class="dropdown-header">下拉菜單標(biāo)題</li>
<li role="presentation">
<a role="menuitem" tabindex="-1" href="#">分離的鏈接</a>
</li>
</ul></div></body></html>結(jié)果如下所示：
提示：關(guān)于Bootstrap下拉菜單中標(biāo)題的設(shè)置，你還可以參考“Bootstrap 下拉菜單之菜單標(biāo)題”部分！
擴(kuò)展閱讀
想要嘗試更多關(guān)于下拉菜單的實(shí)踐嗎？那么你可以閱讀本站的“CSS 下拉菜單”部分。
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