reader/app.js

//app.js
import {GetQueryString} from 'utils/util'
App({
  onLaunch: function (options) {
   // 判断设备是否为 iPhone X
   this.checkIsIPhoneX()
  },
  globalData: {
    isIPX: false, // 当前设备是否为 iPhone X
  },
  checkIsIPhoneX: function() {
    const self = this
    wx.getSystemInfo({
      success: function (res) {
        // 根据 model 进行判断
        if (res.model.search('iPhone X') != -1) {
          self.globalData.isIPX = true
        }
      }
    })
  }
})