text: //index.js
  //获取应用实例
  const app = getApp()
  
  Page({
    data: {
     dataArr: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
    },
    onLoad: function () {
      wx.setNavigationBarTitle({
        title: '微信小程序Demo3'
      })
    }
  })
  