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代码编辑器：

<!DOCTYPE htm>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.bootcss.com/bootstrap/2.3.2/css/bootstrap.min.css" rel="stylesheet">
<style>body {margin:10px}</style>
<ul class="nav nav-pills">
    <li class="dropdown all-camera-dropdown">
        <a class="dropdown-toggle" data-toggle="dropdown" href="#">
            Tutorials
            <b class="caret"></b>
        </a>
        <ul class="dropdown-menu">
            <li data-filter-camera-type="all"><a data-toggle="tab" href="#">HTML5</a></li>
            <li data-filter-camera-type="Alpha"><a data-toggle="tab" href="#">PHP</a></li>
            <li data-filter-camera-type="Zed"><a data-toggle="tab" href="#">MySQL</a></li>
            <li data-filter-camera-type="Bravo"><a data-toggle="tab" href="#">JavaScript</a></li>
        </ul>
    </li>
</ul>

代码编辑器：

运行结果：