易优cms导航菜单判断是否有子栏目，有则显示无隐藏

{eyou:channel type="top" row="10" id="field" currentstyle="active"} 

<li class="yiji"> 

<a href="{$field.typeurl}" title="{$field.typename}" class="{$field.currentstyle}">{$field.typename}</a>

 {eyou:notempty name="$field.children"} 

<div class="erji"> {eyou:channel name="$field.children" row="100" id="field2"} 

<a href="{$field2.typeurl}" class="dropdown-item ">{$field2.typename}</a>

 {/eyou:channel} 

</div>

 {/eyou:notempty} 

</li> {/eyou:channel}