<div data-field="dropdown" class="dropdown">
    <button data-field="button" class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">
        <span data-field="text"></span>
        <span class="caret"></span>
    </button>
    <ul data-field="dropdown-menu" class="dropdown-menu" role="menu">
    </ul>
</div>