my_loan/htmldev/wxMini/pages/businessDetail/businessDetail.js

const pages = require('../../mixin/pages')
const { getShopDetail } = require('../../api/common')
let leftHeight = 0
let rightHeight = 0
let query = null

Page({

  /**
   * 页面的初始数据
   */
  data: {
    ...pages.data(),
    listUrl: '/api/user/home/shop/product/list',
    searchForm: {
      shop_id: ''
    },
    background: ['demo-text-1', 'demo-text-2', 'demo-text-3'],
    nav: [
      {
        name: '详情',
        value: '1'
      },
      {
        name: '产品',
        value: '2'
      }
    ],
    active: '1',
    leftList: [],
    rightList: []
  },
  ...pages.methods,
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    const { shop_id } = options
    this.setData({
      'searchForm.shop_id': shop_id
    }, () => {
      this.fetchShopDetail()
      this.fetchOrderList()
    })
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh() {
    if (this.data.freshing) {
      return
    }
    this.setData({
      freshing: true
    })
    this.fetchShopDetail()
    this.bindCallBack()
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom() {
    this.fetchOrderList()
  },
  bindCallBack() {
    this.fetchShopDetail()
    this.refreshOrderList()
  },
  async fetchShopDetail() {
    try {
      const { status, data, msg } = await getShopDetail(this.data.searchForm.shop_id)
      if (status) {

      } else {
        wx.showToast({
          title: msg,
          icon: 'none'
        })
      }
    } catch (err) {}
  },
  async isLeft(list) {
    const {
      leftList,
      rightList
    } = this.data
    query = wx.createSelectorQuery()
    for (const item of list) {
      leftHeight <= rightHeight ? leftList.push(item) : rightList.push(item)
      await this.getBoxHeight(leftList, rightList)
    }
  },
  getBoxHeight(leftList, rightList) {
    return new Promise((resolve, reject) => {
      this.setData({
        leftList,
        rightList
      }, () => {
        query.select('.waterfall-left').boundingClientRect()
        query.select('.waterfall-right').boundingClientRect()
        query.exec((res) => {
          leftHeight = res[0].height
          rightHeight = res[1].height
          resolve()
        })
      })
    })
  },
  handleNav(e) {
    const { value } = e.detail

    this.setData({
      active: value
    })
  }
})