await后面調用方法，方法內部有ajax請求，為何不是等方法內部的請求結束再往下執行？怎么解決？                (async ()=>{                    await this.getDetailHttp();                    console.log(2222)    //希望在getDetailHttp內部的ajax請求結束后再執行                                      })();                                  getDetailHttp(){                    this.$fetch(                        'maintain/single/detail/' + this.checkObj.id                     ).then(res=>{                        if(res.data.status === 200){                            console.log(111)                         };                     })                 }