iuap-design/snippets/examples/button/4-menuBtn/widget.html

UI Framework Used For Enterprise.

<button class="u-button  raised u-menu-button" id="demo-menu-lower-right1">
    联查
    <span class="u-right-icon fa fa-angle-down"></span>
</button>
<ul class="u-menu u-menu-bottom-right" for="demo-menu-lower-right1">
    <li class="u-menu-item "><a>报价单</a></li>
    <li class="u-menu-item"><a>到货单</a></li>
</ul>