在vue项目中promise解决回调地狱和并发请求的问题

created(){
  if (this.$route.query.type){
    this.type = this.$route.query.type;
    this.sellerId = this.$route.query.targetId;
    this.initApi()
  }
},
methods: {
  initApi(){
    `// 商户信息`
    let SellerDetailApi = new Promise((resolve, reject) => {
      getSellerDetail(this.sellerId).then( res => {
        resolve(res)  // resolve(res.data)
      }).catch( err => {
        reject(res)
      })
    })
    `// 会员卡信息`
    let MemberCardInfoApi = new Promise((resolve, reject) => {
      getMemberCardInfo(this.sellerId, this.payMoney).then( res => {
        resolve(res) // resolve(res.data)
      }).catch( err => {
        reject(res)
      })
    })
    `// Promise的all方法，等数组中的所有promise对象都完成执行`
    Promise.all([SellerDetailApi, MemberCardInfoApi]).then( res => {
      this.loading = false;
      // 商户信息
      this.detail = res[0].data.detail;
      this.sellerPic = this.detail.picture;
      this.sellerName = this.detail.name;
      this.discount = this.detail.discount;
      // 会员卡信息
      this.cardDetail = res[1].data;
      this.balance = this.cardDetail.balance; //余额
      this.rechargeTip = this.cardDetail.rechargeTip; // 付款金额提示充值
    }).catch( err => {
      console.log(err)
    })
  }
}

export function wxLogin() {
 let pResult = new Promise((resolve, reject) => {
 uni.login({
  provider: 'weixin',
  success: (res) => {
  console.log('login success:', res);
  // return res;
  setTimeout(function() {
   resolve(res);
  }, 3000);
  },
  fail: (err) => {
  console.log('login fail:', err);
  reject(err);
  }
 });
 }).catch(res => {
 console.log(666, res);
 })
 return pResult;
}

 import {login,wxLogin} from '@/common/login.js'
 
  (async () => {
  //获取授权状态
  console.log(1111,"111")
  let aaa = await wxLogin();
  console.log(3333,"3333");
  console.log(4444,aaa);
  })()