小程序检测用户是否授权过

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isLogin() {       uni.login({         provider: "weixin",         success: (res) => {           this.$require({             url: "xxxxxxx",             data: {               code: res.code,             },           }).then((res) => {                           if (res.code == 2 || res.code == 0) {               getApp().globalData.isLogin = false;               uni.setStorageSync("isLogin", "false"); //appid             } else {               getApp().globalData.isLogin = true;               uni.setStorageSync("userId", res.data.userId); //appid               uni.setStorageSync("username", res.data.nickName); //appid               uni.setStorageSync("userImg", res.data.avatarUrl); //appid               uni.setStorageSync("isLogin", "true"); //appid             }           });         },       });     },