wxhuanart/miniprogram/components/dropmenu/dropmenu-item.wxml

<view class="n-dropmenu-item{{show?' show':''}}">
  <view class="n-dropmenu-item__show" bindtap="onShowClick">
    <view class="text-sm">{{label}}</view>
    <t-icon prefix="hn" name="{{show?'caretup':'caretdown'}}" size="22rpx" />
  </view>
  <view class="n-dropmenu-item__float{{show?' show':''}}">
    <block wx:for="{{options}}" wx:key="index">
      <template is="option" data="{{item: item, active: item.value === value}}" />
    </block>
  </view>
</view>

<template name="option">
  <view class="n-dropmenu-item__option{{active? ' selected' : ''}}" hover-class="click" hover-stay-time="40" bindtap="onOptionClick" data-value="{{item.value}}" data-label="{{item.label}}">
    <view class="text">{{item.label}}</view>
    <t-icon prefix="wr" name="check" wx:if="{{active}}" />
  </view>
</template>