MD_YOSwechat/components/My_dropdownMenu/index.wxml

<van-dropdown-menu wx:if="{{mtype=='date'}}" custom-class='menu' active-color='var(--assist)'>
    <view slot='leftSlot' class="slot-box">
        <slot />
    </view>
    <van-dropdown-item value="{{ sortByDateChecked }}" options="{{ sortByDate }}" />
</van-dropdown-menu>