beforeConfirm () {
      this.detailInfos.userPointList.map((item, index) => {
        if (item.show && !item.rejectReason) {
          item.showRed = true
          this.$set(this.detailInfos.userPointList, index, item)
        }
      })
      setTimeout(() => {
        document.getElementsByClassName('rejectReason')[0].scrollIntoView({
          behavior: 'smooth', // 平滑过渡
          block: 'start' // 上边框与视窗顶部平齐。默认值
        })
      }, 200)
    },

以上代码是做了一个，点击确认校验列表rejectreason是否为空的情况