要这样使用 ，let _this = this
在内部函数onShow，onLaunch等生命周期函数中要这样：
wx.getStorage({key: 'phoneNumber',success(res) {_this.$options.globalData.obtainChatAllow = true;_this.$options.globalData.obtainLikeAllow = true;_this.$options.globalData.obtainCallAllow = true;_this.$options.globalData.obtainMailAllow = true;_this.$options.globalData.obtainPhoneAllow = true;_this.$options.globalData.userPhone = res.data;}})
注意：在App.vue页面中的自定义函数中，如果加上$options会报错，所以要这样
//微信app用户绑定bindThird: function (phone) { const _this = this; let options = { url: "/applet/user/bindThird", params: { "phone": phone, }, successFn(res) { const data = res.data.data; _this.globalData.userToken = data.yunxinToken; _this.globalData.userAccId = data.accId; }, failFn(err) { _this.uni.toast("绑定用户失败，请重试"); console.log("绑定用户失败，请重试") } } return request(options);},2:在其它页面使用 import app from "../../App.vue"created() {const _this = this;_this.dynamicIcon = app.globalData.headIcon;}
官网没去描述，这个坑踩得