Code error writing method of wechat applet rotation chart

<view class="tupian">
  <swiper>
    <swiper-item>
      <image src="{
    {}}"></image>
    </swiper-item>
  </swiper>
</view>

<view class="tupian">
  <swiper indicator-dots="{
    {indicatorDots}}" 
          autoplay="{
    {autoplay}}" 
          interval="{
    {interval}}"
          duration="{
    {duration}}">
            <block wx:for="{
    {background}}" wx:key="*this">
              <swiper-item>
                <image src="{
    {}}"></image>
              </swiper-item>
            </block>
  </swiper>
</view>

view class="tupian">
  <swiper indicator-dots="true" 
          autoplay="true" 
          interval="2000">
            <block wx:for="{
    {coverList}}" wx:key="id" bindtap="goodsbug">
              <swiper-item>
                <image class="photo" src="{
    {item.url}}"></image>
              </swiper-item>
            </block>
  </swiper>
</view>

.tupian {
    
  width: 100%;
  height: 100%;
  line-height: 10px;
}

// pages/index_hio/index_hio.js
Page({
    

  /** *  Initial data of the page  */
  data: {
    
    centerItem: 0,
    coverList: [
      {
    
      id: 0,
      url: "../image/photo/1.jpeg"
    },
    {
    
      id: 1,
      url: "../image/photo/2.jpeg"
    },
    {
    
      id: 2,
      url: "../image/photo/3.jpeg"
    },
    {
    
      id: 3,
      url: "../image/photo/4.jpeg"
    }
    ]
  },

  /** *  Life cycle function -- Monitor page loading  */
  onLoad(options) {
    

  },

  /** *  Life cycle function -- Listening page first rendering completed  */
  onReady() {
    

  },

  /** *  Life cycle function -- Monitor page display  */
  onShow() {
    

  },

  /** *  Life cycle function -- Monitor page hidden  */
  onHide() {
    

  },

  /** *  Life cycle function -- Monitor page uninstall  */
  onUnload() {
    

  },

  /** *  Page related event handler -- Monitor user pull-down action  */
  onPullDownRefresh() {
    

  },

  /** *  Handling function of page pull bottom event  */
  onReachBottom() {
    

  },

  /** *  Users click the upper right corner to share  */
  onShareAppMessage() {
    

  }
})