织梦模板DEDECMS缩略图标签[field:picname/]和[field:litpic/]的区别

显示出二级栏目及以下的所有图片(包含三级栏目的)
<ul class="incps">
{dede:arclist row=9 col="3" typeid='3' titlelen=15 type='image.'imgwidth='234' imgheight='214'} 
<li><a href="[field:arcurl/]" class="btc" ><img src="[field:picname/]" alt="[field:title/]" height="214" width="234"/></a> 
<a href="[field:arcurl/]" >[field:title/]</a></li>
{/dede:arclist}
</ul>

 
只能显示出单个栏目下的缩略图(例如:二级栏目下有三级栏目,只显示三级栏目下的图片,点击二级栏目不会显示二级及以下栏目的所有图片)
<ul class="incps">
{dede:arclist row=9 col="3" typeid='3' titlelen=15 type='image.'imgwidth='234' imgheight='214'} 
<li><a href="[field:arcurl/]" class="btc" ><img src="[field:litpic/]" alt="[field:title/]" height="214" width="234"/></a> 
<a href="[field:arcurl/]" >[field:title/]</a></li>
{/dede:arclist}
</ul>