edu-mini/components/banner/banner.wxml

<view class="swiper" wx:if="{{imgList.length && imgList.length>0}}">
    <swiper indicator-dots="{{indicatorDots}}" current="{{currentIndex}}" bindchange="swiperChange"
            class="banner-container">
        <block wx:for="{{imgList}}" wx:key="index">
            <swiper-item class="banner-content">
                <van-image src="{{item.imgPath}}" fit="cover" width="{{imgWidth}}" height="{{imgHeight}}"
                           radius="{{imgRadius}}" bindtap="onTap" data-index="{{index}}"
                           custom-class="banner-img"/>
            </swiper-item>
        </block>
    </swiper>
    <view class="indication">
        <block wx:for="{{imgList}}" wx:key="index">
            <view class="{{index == currentIndex? 'active' : 'default'}}"></view>
        </block>
    </view>
</view>
<view wx:else class="default-banner banner-container">
    <van-image src="" width="{{imgWidth}}" height="{{imgHeight}}"/>
</view>