微信小程序 globalData监听

app.js

watchGlobalData:function(callback,propname,_this){
   
    let slicepropname=propname.slice(1);
    console.log(slicepropname);
    let obj=this.globalData;
    Object.defineProperty(obj,propname,{
   
      configurable:true,
      enumerable:true,
      set