异步请求与for循环

 for(let i = 0,k=-1; i <cameraBatch.length ; i++) {
        this.Api.post('/env/camera', cameraBatch[i]).then(() => {
          this.result.successCount += 1;
          this.processLength = this.result.successCount / cameraBatch.length * 100;
          this.totalPage++;
          this.currentPage = Math.ceil(this.totalPage / this.pageSize);
          this.updateStatus();
        }).catch((err) => {
          this.result.failCount += 1;
          if (err.code === '18200') {
            this.result.failMsg.push({
              message: cameraBatch[i].name + '新增失败:' + err.message
            });
          } else {
            this.result.failMsg.push({
              message: '新增失败'
            });
          }
        })
      }