//app.js
App({
  onLaunch: function (options) {
    //设置场景值到缓存中:
    //wx.setStorageSync("scene", options.scene);
    //return ;
    this.globalData.scene = options.scene;
  },
  globalData:{
    scene:''
  }
})

 

在页面中获取全局变量:

const app = getApp()

Page({
  //进来加载页面:
  onLoad(opts) {
    var scene = app.globalData.scene;
    }
  }
})