iview动态表格实现并实现单行可增删（表头与内容都是动态获取）

需求：

代码实现：

考核对象的change事件：

<Col span="12">
                    <FormItem label="考核对象：" prop="assesseeTypeCodeArr">
                        <Cascader ref="address" :data="evalTypeOptions" v-model="formData.evaluationTarget.assesseeTypeCodeArr" @on-change="changeCascader" style="200px"  :clearable="false"></Cascader>
                    </FormItem>
                </Col>

//切换考核对象
            changeCascader(value, selectedData){
                this.columnsDataList =[]; //要清空，防止累加push数据
                let flag = true;
                if(value.length !=0 && this.formData.evaluationTarget.year == ''){
                    this.$Message.error({
                        content: '请先选择考核年度！',
                        duration: 3
                    });
                    this.$refs.address.clearSelect()
                    flag = false;
                    return
                }
                if(flag){
                    this.formData.evaluationTarget.year = this.$moment(this.formData.evaluationTarget.year).format('YYYY');
                    this.formData.evaluationTarget.assesseeType = selectedData[selectedData.length -1].label;
                    this.formData.evaluationTarget.assesseeTypeCode = selectedData[selectedData.length -1].value;
                    let data ={
                        evalYear:this.formData.evaluationTarget.year,
                        evalTypeCode:this.formData.evaluationTarget.assesseeTypeCode
                    }
                    
                    let evalNameList = [ //模拟后端返回的数据
                        {"id":"111111","evalName":"2021年本部部门考核表（省公司评分）"},
                        {"id":"222222","evalName":"2020年本部部门考核表（分公司评分）"}
                    ]
                     let that = this;
                    for (let i = 0; i < evalNameList.length; i++) {
                        var title_info = {
                        id: -1,
                        columns: [
                            {title: '考核指标名称',slot: 'postCodeArr'},
                            {title: '--',200,align:'center',slot: 'scoreRatio'}
                        ],
                        data: []
                        };
                        title_info.columns[0].title = evalNameList[i].evalName; //columns数据
                        title_info.data = [{postCodeArr:[],postCode: '',postName:'',scoreRatio: '',}]; //设置默认为空的data数据
                        title_info.id = evalNameList[i].id;
                        that.columnsDataList.push(title_info);
                    }
                    // this.$api.evalProgrammeSetting.getByParams(data).then(res=>{
                    //     if(res.result == MsgType.SUCCESS){
                    //     }
                    // })
                }
            },

table表格渲染：

<Table ref="selection" v-for="(item) in columnsDataList" :columns="item.columns" :data="item.data" :key='item.id'>
                            <template slot-scope="{row, index }" slot="postCodeArr">
                                <Select v-model="row.postCodeArr" multiple style="550px" @on-change="tableSelectChange($event, index, item.data, evalAssessorOptions)" :transfer="true" >
                                    <Option v-for="item in evalAssessorOptions" :value="item.itemValue" :key="item.itemValue">{{ item.itemName }}</Option>
                                </Select>
                            </template>
                            <!-- formData.evaluationAssessorList[index]['scoreRatio1'] -->
                            <template slot-scope="{ row, index }" slot="scoreRatio">
                                <Input v-model="row.scoreRatio" style=" 90px" @on-change="tableInputChange($event, index, 'scoreRatio', item.data)"/>
                                <Icon type="ios-add-circle-outline" @click="addTableRow(row,item)" />
                                <Icon type="ios-close-circle-outline" @click="delTableRow(index,item)" />
                            </template>
                        </Table>

添加行，删除行事件：

//添加行
            addTableRow (row,items) {
                const item = {
                    postCodeArr:[],
                    postCode: '',
                    postName:'',
                    scoreRatio: '',
                }
                items.data.push(item)
            },
            //删除行
            delTableRow(index,items){
               items.data.splice(index,1);
            },

 

 最终效果：