//app.js import { getStorageSync, setStorageSync, removeStorageSync } from './utils/util.js'; App({ onLaunch: function () { let systemInfo = getStorageSync('systemInfo') if (!systemInfo) { systemInfo = wx.getSystemInfoSync() setStorageSync('systemInfo', systemInfo) } let citySelectObj = getStorageSync('citySelectObj') // 老版本存的 citySelectObj = {id,name,...}, 删除做兼容 if(citySelectObj && citySelectObj.id) { removeStorageSync('citySelectObj') citySelectObj = null } if (!citySelectObj) { citySelectObj = this.globalData.citySelectDefault setStorageSync('citySelectObj', citySelectObj) } }, globalData: { // 默认选择的城市 citySelectDefault: { cityId: 205, cityName: '波士顿' }, userInfo: null } })