Component({
  data: {
    indicatorDots: true,
    vertical: false,
    autoplay: true,
    interval: 2000,
    current: 0, // 默认第一张图
    imgheights: [], //所有图片的高度  
    height: wx.getSystemInfoSync()['statusBarHeight'] + 50
  },
  properties: {
    // 需要被渲染显示的图片地址数组
    list: {
      type: Array,
      value: []
    },
    // 如果父组件自定义顶部导航后，建议传true做边距
    // 如果没有自定义那么不传数值，默认false，图片和顶部没有边距
    padding: {
      type: Boolean,
      value: false
    }
  },
  methods: {
    imageLoad: function (e) {//获取图片真实宽度  
      var imgwidth = e.detail.width,
          imgheight = e.detail.height,  
          ratio = imgwidth / imgheight;

      console.log(imgwidth, imgheight)
      //计算的高度值  
      var viewHeight = 750 / ratio;
      var imgheight = viewHeight;
      var imgheights = this.data.imgheights;

      //把每一张图片的对应的高度记录到数组里  
      imgheights[e.target.dataset.id] = imgheight;
      this.setData({
        imgheights: imgheights
      })
    },
    bindchange: function (e) {
      // console.log(e.detail.current)
      this.setData({ current: e.detail.current })
    },
  }
})