<li class={if $c.id == cat.cid} class="active open" {if} >

class 里面套 class 是啥写法 ，看下下面哪个能用到


<li {if $c.id == cat.cid} class="active open" {if} >  

<li class="{if $c.id == cat.cid}active open{if}"  >

改了下少了个 $
<li {if $c.id == $cat.cid} class="active open" {if} >  

<li class="{if $c.id == $cat.cid}active open{if}"  >

{category module=share pid=$top.id}
<li class=" {if IS_SHARE && $catid && in_array($catid, $t.catids)} active {/if}"  >
    <a href="{$t.url}">{$t.name}</a>
</li>
{/category}

{loop $related $c}

<li {if $c.id==$cat.id} class="active"{/if} >

<a href="{$c.url}" title="{$c.name}">{$c.name}</a></li>

{/loop}

这样就可以了呢？