trafficBroadcast/miniprogram/components/dayList/components/imageComponents/index.wxml

<template name="mediaImage">
  <view class="col-3" wx:for="{{list}}" wx:for-index="i" wx:for-item="itemSon" wx:key="i" data-index="{{index + '-' + i}}" bindtap="showMedia">
    <image style="width: 100%;height: 100%" src="{{itemSon.url}}" mode="aspectFit" />
  </view>
</template>