tabs切换不行，active判断也不行

<!-- Nav tabs -->

{loop table="classtype" id="21" isshow="1" as="v"} 

{if($classtypedata[$v['id']]['haschild'])}

<ul class="nav" id="pills-tab" role="tablist">

  {foreach $classtypedata[$v['id']]['children']['list'] as $vv}

  <li class="nav-item" role="presentation">

    <button class="nav-link {if($v_key==1)}active{/if}" id="home-tab" data-bs-toggle="tab" data-bs-target="#{$vv['classname']}" type="button" role="tab" aria-controls="home" aria-selected="true">{$vv['classname']}</button>

  </li>

  {/foreach}

</ul>

<!-- Tab panes -->

<div class="tab-content">

    {foreach $classtypedata[$v['id']]['children']['list'] as $vv}

   {loop tid="$v['id']" isshow="1" isall="1" as="vvs"} 

  <div class="tab-pane {if($v_key==0)}active{/if}" id="{$vv['classname']}" role="tabpanel" aria-labelledby="home-tab" tabindex="0">

    <a target="_blank" href="{fun U('index/go',['id'=>$vvs['id']])}">{$vvs['title']}内容</a>  

      </div>

   {/loop}

   {/foreach}

</div>

{/if}

{/loop}