期望目标：实现一个能通过按钮来动态增加表格栏，每次能添加一行，每行末尾有一个删减按钮。

<el-button type="text" class="primary"@click="addMember()">+添加</el-button>
<el-table:data="memberList"style="width: 100%":header-cell-style="{background: '#fafafa',color: '#aaa',fontSize: '15px',}"><el-table-column prop="index" label="序号" width="60"><template slot-scope="scope"><span>{{ getMemberIndex(scope.$index) }}</span></template></el-table-column><el-table-column prop="facilityName" label="设施名称"><template slot-scope="scope"><el-select v-model="scope.row.facilityName" placeholder="请选择名称" clearable><el-option v-for="dict in dict.type.data_facilities_name" :label="dict.label" :value="dict.value"  /></el-select></template></el-table-column><el-table-column prop="facilitySpecificType" label="具体类型"><template slot-scope="scope"><el-select v-model="scope.row.facilitySpecificType" placeholder="请选择类型" clearable><el-option v-for="dict in dict.type.data_facilities_type" :label="dict.label" :value="dict.value"/></el-select></template></el-table-column><el-table-column prop="facilityLocation" label="设施位置"><template slot-scope="scope"><el-select v-model="scope.row.facilityLocation" placeholder="请选择位置" clearable><el-option v-for="dict in dict.type.data_equipment_location" :label="dict.label" :value="dict.value"/></el-select></template></el-table-column><el-table-column prop="facilityTp" label="规格"><template slot-scope="scope"><el-input v-model="scope.row.facilityTp"></el-input></template></el-table-column><el-table-column prop="accountabilityUnit" label="责任单位"><template slot-scope="scope"><el-input v-model="scope.row.accountabilityUnit"></el-input></template></el-table-column><el-table-column label="操作"><template slot-scope="scope"><el-buttonsize="mini"type="text"icon="el-icon-delete"@click="handleDelete(scope.$index,'memberList')">删除</el-button></template></el-table-column></el-table>// 添加杆件数据按钮addMember() {var member = {index: this.dataId++,facilityNo: '',facilityName: '',facilitySpecificType: '',facilityLocation: '',facilityTp: '',accountabilityUnit: '',};this.memberList.push(member);},

效果：

遇到的问题一：在删减时，当前所有行的序号需要自动删减，重新计算变更序号

// 删除行数据后序号自动连贯更新getMemberIndex(index) {return this.memberList.slice(0, index + 1).length ;},
/** 删除按钮操作 */handleDelete(index, listName) {if (index !== -1 && listName =="memberList") {this.memberList.splice(index, 1)}},

给序号那一栏字段单独重设，动态变更index，<span>{{ getMemberIndex(scope.$index) }}</span>，每次删除一行，调用handleDelete函数，再用getMember重新计算一遍所有序号

如果有数据验证的需求，就需要在table外面再嵌套一层form，因为只有el-form表单猜有数据验证的功能。

      <el-form :model="memberForm" :rules="rules" ref="memberForm"></el-form>

 问题二：

多个表单同时用一个接口提交，在提交数据表单时，后端要求有特殊的数据结构，需要将获取到的多个表单数据重新按要求整合。新设立一个json字段存储

/** 提交按钮 */async submitForms() {// 构建数据结构const facilitiesData = {pointId: this.pointForm.pointId,pointName: this.pointForm.pointName,memberList: this.memberList.map(member => ({facilityName: member.facilityName,facilitySpecificType: member.facilitySpecificType,facilityLocation: member.facilityLocation,facilityTp: member.facilityTp,accountabilityUnit: member.accountabilityUnit,})),}// 发送请求添加设施await addFacilities(facilitiesData).then(response => {this.$modal.msgSuccess("新增成功");this.goBack();})},