reader/components/banner/index.wxml

<view class="header">
  <view class="headerBg"></view>
  <swiper class="swiper" autoplay circular indicator-dots indicator-active-color="#fff" indicator-color='#ecececa1'>
    <block wx:for="{{bannerList}}" wx:key="id">
      <swiper-item bindtap='bannelEvent' data-type='{{item.type}}'>
        <image src="{{item.icon}}" class="swiper-item" mode="" />
      </swiper-item>
    </block>
  </swiper>
</view>