有人能帮我做引导下拉菜单吗

Question

Dropdown不起作用，有人能帮帮我吗！！

<div class="col-xs-12">
<div class="btn-group" appDropdown>
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">Manage Recipe <span class="caret"></span></button>
<ul class="dropdown-menu">
<li><a>To Shopping List</a></li>
<li><a (click)="onEditRecipe()"style="cursor: pointer;">Edit Recipe</a></li>
<li><a style="cursor: pointer;">Delete Recipe</a></li>
</ul>
</div>
</div>
</div>

Answer 1

将data-toggle="dropdown"添加到按钮标签中。

Answer 2

只需使用data-toggle="dropdown"和data-target="#navdrop"