如何选择具有特定类别的li？

<ul id="attached_deals_tab" class="nav nav-tabs">
  <li class="active">
    <a data-toggle="tab" href="/go.html?url=#Test1">Test1</a>
  </li>
  <li class="">
    <a data-toggle="tab" href="/go.html?url=#Test2">Test2</a>
  </li>
</ul>
<ul id="attached_deals_tab" class="nav nav-tabs