写法： 
{dede:arclist typeid='2' row='4'}
<li [field:global name=autoindex/] class='[field:global name="autoindex" runphp='yes'](@me==4)?@me='no':@me='';[/field:global]'><a href="[field:arcurl/]" target="_blank">[field:title/]</a></li>
{/dede:arclist}