eyoucms判断栏目下是否有子栏目

eyoucms判断栏目下是否有子栏目，代码如下：

<ul class="m_navul" data-in="fadeInDown" data-out="fadeOutUp">
	<li class="active">
	<a href="/">首页<span>HOME</span><i class="fa fa-angle-right"></i></a>
	</li>
	{eyou:channel row='6' type='top' currentstyle="dropdown"}
	<li class="{$field.currentstyle}">
		{eyou:notempty name="$field.children"}
		<a href="javascript:void(0)">
			{$field.typename}
			<span>
				{$field.englist_name}
			</span>
			<i class="fa fa-angle-right">
			</i>
		</a>
		{eyou:else /}
		<a href="{$field.typeurl}">
			{$field.typename}
			<span>
				{$field.englist_name}
			</span>
			<i class="fa fa-angle-right">
			</i>
		</a>
		{/eyou:notempty} {eyou:notempty name="$field.children"}
		<div class="dropdown_menu">
			{eyou:channel name="$field.children" row="5" id="field2"}
			<a href="{$field2.typeurl}">
				{$field2.typename}
				<span>
					{$field2.englist_name}
				</span>
			</a>
			{/eyou:channel}
		</div>
		{/eyou:notempty}
	</li>
	{/eyou:channel}
</ul>