vue中使用 async & await

// 初始化
async init() {
    let res=await this.getAreaList();
    // 处理返回结果
    if(res.data){
        this.arrAreaList=res.data.provinceList;
    }
    let res1=await this.getUserAddress('900003354');
    // 处理返回结果
    if(res1.data){
        let cityId = res1.data.discover.cityId+'';;
        this.getCityName(cityId);
    }
    await this.getSingerList();
    
},
// 获取地址列表
getAreaList(userId,callBack,cityId){
        return axios.get(baseURL + 'cms/api/fetch.do?cmd=discoverService|selectProvince&req={}')
},
// 获取用户地址信息
getUserAddress(userId){
    if(!userId) return;
    let req=encodeURIComponent(`{"query":{"userId":${userId}}}`);
    return axios.get(baseURL + 'cms/api/fetch.do?cmd=discoverService|selectuserCityId&req='+req)
},
// 获取地址名称
getCityName(cityId){
    if(cityId==0){
        this.curProvinceName='火星';
        this.curProvinceID=cityId;
    } else { 
        this.curProvinceName='北京';
        this.curProvinceID=1202;
        this.arrAreaList.some(function(item) {
            if (cityId.substring(0, 4) ==item.provinceID) {
                this.curProvinceName=item.provinceName;
                this.curProvinceID=cityId.substring(0, 4);
                return true;
            } 
        }, this);
    }
    console.log(4444)
    
},
// 获取歌手列表
getSingerList(){
    console.log(33333333)
    var req=encodeURIComponent(`{"query":{"gender":"${this.curGender}","provinceID":${this.curProvinceID}},"page":{"pageSize":20,"pageNo":${this.curPage}}}`);
    axios.get(baseURL + 'cms/api/fetch.do?cmd=discoverService|selectProvincePage&req='+req, {
        emulateJSON: true
    }).then((res)=> {
        console.log(res);
    },(err)=> {
        console.log(err);
    });
},