关于javascript:table-表格合并列

 //数据格式解决        let condot = 0;        this.spanArr = []; //重置        this.tbList.forEach((item, index) => {          if (index === 0) {            this.spanArr.push(1);          } else if (item.sysName === this.tbList[index - 1].sysName) {            this.spanArr[condot] += 1;            this.spanArr.push(0);          } else {            condot = index;            this.spanArr.push(1);          }        });                <td                    v-if="spanArr[index]"                    :rowspan="spanArr[index]"                    class="titTb"                    valign="middle"                  >