vue如何循环请求一个接口

 packageSubmit(){
        const than=this
        than.timeSection.forEach((item,index)=>{ //循环请求的数据
          console.log(item)
          than.packageDatil.forEach((item2,i)=>{ // 循环请求的数据
            allSubmit({stationid:this.stationid,packageid:this.fromData.package, //接口携带上参数 这里最好利用计算属性处理一下，不然显得很长
          PlanDate:item,PlanTimeStart:item2.plantime,PlanTimeend: item2.timespan+item2.plantime-0,PlanNum: item2.plannum}).then(res=>{
            console.log(res)
            if(res.data.success==1){
              Toast('处理成功~')
              setTimeout(() => {
                //  this.$router.push({name:'schedul_set'})
              }, 0);
            }else if(res.data.success==0){
                Toast(res.data.msg)
            }
          }).catch(err=>{
            console.log('处理失败')
          })
          })

async 方法名() {
      for (let i = 0; i < this.mlList.length; i++) {
        for (let j = 0; j < this.mlList[i].child.length; j++) {
          const res = await postapplicationJson(
            {
              id: this.$route.params.id,
              catalogID: value,
              parentID: this.mlList[i].id,
              childID: this.mlList[i].child[j].id
            },
            '/goods/across/syncCatalogAndGoods'
          )
          if (res.code == 1001) {
            this.loading = false
            this.$set(this.mlList[i].child[j], 'msg', '克隆成功')
          } else {
            this.$set(this.mlList[i].child[j], 'msg', res.msg)
            this.loading = false
          }
        }
      }