vue+element实现多级表头加树结构

标题两种展示方式

方式一

完整代码:

<template><div class="box"><el-tableref="areaPointTable":data="tableData"border:span-method="objectSpanMethod":header-cell-style="tableHeaderMerge"><el-table-column:prop="item.prop?item.prop:''":label="item.titleName"align="center"v-for="(item, index) in tableHeader":key="index"><template slot-scope="{ row, column, $index }"><spanv-if="column.property=='bigType'"@click="handleDeleteN(row, column, $index)":class="row[item.prop] == '未达标' ? 'text-red' : ''":style="row[item.prop] < 0 ? 'color:red;' : ''"style="cursor: pointer;">{{isNaN(row[item.prop])?row[item.prop]:row[item.prop] >= 0? row[item.prop]: Math.abs(row[item.prop])}}</span><spanv-else:class="row[item.prop] == '未达标' ? 'text-red' : ''":style="row[item.prop] < 0 ? 'color:red;' : ''">{{isNaN(row[item.prop])?row[item.prop]:row[item.prop] >= 0? row[item.prop]: Math.abs(row[item.prop])}}</span></template><el-table-column:prop="iteam.prop":label="iteam.titleName"align="center"v-for="(iteam, idx) in item.childTitle":key="idx"><template slot-scope="{ row }"><span:class="row[iteam.prop] == '未达标' ? 'text-red' : ''":style="row[iteam.prop] < 0 ? 'color:red;' : ''">{{isNaN(row[iteam.prop])?row[iteam.prop]:row[iteam.prop] >= 0? row[iteam.prop]: Math.abs(row[iteam.prop])}}</span></template></el-table-column></el-table-column></el-table></div>
</template>
<script>
export default {name: 'demo',data() {return {input: '',tableHeader: [{titleName: '类型',childTitle: null,prop: 'bigType',},{titleName: '类型',childTitle: null,prop: 'smallType1',},{titleName: 'A',childTitle: [{titleName: 'a1',childTitle: null,prop: 'prop2',},{titleName: 'a2',childTitle: null,prop: 'prop3',},],},{titleName: 'B',childTitle: [{titleName: 'b1',childTitle: null,prop: 'prop4',},{titleName: 'b2',childTitle: null,prop: 'prop5',},{titleName: 'b3',childTitle: null,prop: 'prop6',},{titleName: 'b4',childTitle: null,prop: 'prop7',},],},{titleName: 'C',childTitle: [{titleName: 'c1',childTitle: null,prop: 'prop8',},{titleName: 'c2',childTitle: null,prop: 'prop9',},{titleName: 'c3',childTitle: null,prop: 'prop10',},],},{titleName: 'D',childTitle: [{titleName: 'd1',childTitle: null,prop: 'prop11',},{titleName: 'd2',childTitle: null,prop: 'prop12',},],},{titleName: 'W',childTitle: [{titleName: 'w1',childTitle: null,prop: 'prop13',},{titleName: 'w2',childTitle: null,prop: 'prop14',},],},],initTableData: [{id: 23,bigType: 'AA',smallType1: 'aa1',prop2: '1.0',prop3: '2.5',prop4: '40.0',prop5: '1.0',prop6: '2.5',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '1.0',prop12: '100.0',prop13: '1.0',prop14: '100.0',rowspan: 1,},{id: 38,bigType: 'AA',smallType1: 'aa2',prop2: '8.0',prop3: '100.0',prop4: '2.0',prop5: '8.0',prop6: '100.0',prop7: '达标',prop8: '8.0',prop9: '0.0',prop10: '0.0',prop11: '6.0',prop12: '75.0',prop13: '8.0',prop14: '100.0',},{id: 53,bigType: 'AA',smallType1: 'aa3',prop2: '19.0',prop3: '47.5',prop4: '40.0',prop5: '19.0',prop6: '47.5',prop7: '未达标',prop8: '19.0',prop9: '0.0',prop10: '0.0',prop11: '19.0',prop12: '100.0',prop13: '19.0',prop14: '100.0',},{id: 68,bigType: 'AA',smallType1: 'aa4',prop2: '0.0',prop3: '0.0',prop4: '0.0',prop5: '0.0',prop6: '0.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '0.0',prop12: '0.0',prop13: '0.0',prop14: '0.0',},{id: 83,bigType: 'XX',smallType1: 'xx1',prop2: '55.0',prop3: '0.0',prop4: '0.0',prop5: '76.0',prop6: '0.0',prop7: '未达标',prop8: '64.0',prop9: '0.0',prop10: '0.0',prop11: '65.0',prop12: '85.53',prop13: '61.0',prop14: '80.26',rowspan: 1,},{id: 831,bigType: 'XX',smallType1: 'xx2',prop2: '55.0',prop3: '0.0',prop4: '0.0',prop5: '76.0',prop6: '0.0',prop7: '未达标',prop8: '64.0',prop9: '0.0',prop10: '0.0',prop11: '65.0',prop12: '85.53',prop13: '61.0',prop14: '80.26',rowspan: 1,},{id: 832,bigType: 'XX',smallType1: 'xx3',prop2: '55.0',prop3: '0.0',prop4: '0.0',prop5: '76.0',prop6: '0.0',prop7: '未达标',prop8: '64.0',prop9: '0.0',prop10: '0.0',prop11: '65.0',prop12: '85.53',prop13: '61.0',prop14: '80.26',rowspan: 1,},{id: 98,bigType: 'QQ',smallType1: '-',prop2: '0.0',prop3: '0.0',prop4: '0.0',prop5: '0.0',prop6: '0.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '0.0',prop12: '0.0',prop13: '0.0',prop14: '0.0',rowspan: 1,},{id: 113,bigType: 'WW',smallType1: 'ww',prop2: '0.0',prop3: '0.0',prop4: '0.0',prop5: '0.0',prop6: '0.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '0.0',prop12: '0.0',prop13: '0.0',prop14: '0.0',rowspan: 1,},{id: 128,bigType: 'DD',smallType1: 'dd1',prop2: '1.0',prop3: '1.25',prop4: '80.0',prop5: '1.0',prop6: '1.25',prop7: '未达标',prop8: '1.0',prop9: '0.0',prop10: '0.0',prop11: '1.0',prop12: '100.0',prop13: '1.0',prop14: '100.0',rowspan: 1,},{id: 1281,bigType: 'DD',smallType1: 'dd2',prop2: '1.0',prop3: '1.25',prop4: '80.0',prop5: '1.0',prop6: '1.25',prop7: '未达标',prop8: '1.0',prop9: '0.0',prop10: '0.0',prop11: '1.0',prop12: '100.0',prop13: '1.0',prop14: '100.0',rowspan: 1,},{id: 1282,bigType: 'DD',smallType1: 'dd3',prop2: '1.0',prop3: '1.25',prop4: '80.0',prop5: '1.0',prop6: '1.25',prop7: '未达标',prop8: '1.0',prop9: '0.0',prop10: '0.0',prop11: '1.0',prop12: '100.0',prop13: '1.0',prop14: '100.0',rowspan: 1,},],dialogTypeMergeArr: [{rowspan: 4,colspan: 1,},{rowspan: 0,colspan: 0,},{rowspan: 0,colspan: 0,},{rowspan: 0,colspan: 0,},{rowspan: 1,colspan: 1,},{rowspan: 1,colspan: 1,},{rowspan: 1,colspan: 1,},{rowspan: 1,colspan: 1,},],tableData: [],select_box: [],}},mounted() {this.dealTableData(this.initTableData)this.dialogHeaderMergeArr = this.mergeTableHeader(this.tableHeader)},methods: {tableHeaderMerge({ row, column, rowIndex, columnIndex }) {console.log(312312)if (rowIndex == 0) {this.$nextTick(() => {// row[columnIndex].colSpan=this.dialogHeaderMergeArr[columnIndex];if (document.getElementsByClassName(column.id).length !== 0) {document.getElementsByClassName(column.id)[0].setAttribute('colSpan', this.dialogHeaderMergeArr[columnIndex])}})if (this.dialogHeaderMergeArr[columnIndex] == 0) {return { display: 'none' }}}},mergeTableHeader(data) {let countArr = []let labelArr = []data.map((item) => {labelArr = countArr.map((obj) => obj.label)if (item.childTitle) {countArr.push({label: item.titleName,colSpan: item.childTitle.length,hasChild: true,})} else {if (labelArr.includes(item.titleName)) {countArr.map((iteam) => {if (iteam.label == item.titleName) iteam.colSpan += 1})} else {countArr.push({label: item.titleName,colSpan: 1,hasChild: false,})}}})let tableHeaderCountArr = []countArr.map((item) => {if (!item.hasChild) {for (var i = 0; i < item.colSpan - 1; i++) {tableHeaderCountArr.push(0)}}tableHeaderCountArr.push(item.colSpan)})return tableHeaderCountArr},/*** 处理表格数据合并行*/dealTableData(data) {//把日期相同的数据并排在一块const list = this.margePropData(data, 'bigType')//处理日期相同的合并this.tableData = this.mergeRows(list, 'bigType')},handleDeleteN(row, column, $index) {this.initTableData.filter((item, index) => {if (row.bigType === item.bigType && index !== $index) {}// row.bigType === item.bigType && index !== 0})let curChildern = this.tableData.filter((item, index) => row.bigType === item.bigType && index !== $index)let curChildern_init = this.initTableData.filter((item, index) => row.bigType === item.bigType && row.smallType1 !== item.smallType1)if (this.tableData.filter((item, index) => row.bigType === item.bigType).length == 1) {if (curChildern.length > 1) {this.tableData.push(...curChildern)this.dealTableData(this.tableData)} else {this.tableData.push(...curChildern_init)this.dealTableData(this.tableData)return}} else {let newTableData = this.tableData.filter((e) => curChildern.filter((x) => e.id != x.id).length == curChildern.length)// this.tableData = newTableData// this.tableData = this.tableData.filter((it, i) => row.id === it.id)this.dealTableData(newTableData)}},/*** 合并行* @param row* @param column* @param rowIndex* @param columnIndex* @returns {{colspan: number, rowspan: (number|*)}}*/objectSpanMethod({ row, column, rowIndex, columnIndex }) {if ([0].includes(columnIndex)) {return {rowspan: row.rowspan,colspan: 1,}}// if (column.property == 'bigType') {//   return this.dialogTypeMergeArr[rowIndex]// }},/*** 数组中，某个属性相同的数据放在一块，如把某个日期相同的相连一起* @param list 传入的数组* @param prop 那个属性相同的数据* @returns {*[]}*/margePropData(list = [], prop) {let arr = [],tempArr = {}list.forEach((item) => {if (!tempArr[item[prop]]) {tempArr[item[prop]] = [item]} else {tempArr[item[prop]].push(item)}})for (const tempArrKey in tempArr) {arr = [...arr, ...tempArr[tempArrKey]]}return arr},/*** 根据当前数据的位置，在数组中插入数据* 如数组【1，2，4，5】想要在2后面插入3，*1：首先获取到2的下标，*2：然后获取要插入之前的数据，获取要插入之后的数据，中间就是插入的位置*3：最后把这三个按顺序合并就得到在想要的位置插入数据* @param list* @param index* @param target*/insertArrPositionOfIndex(list = [], index = 0, target = {}) {//根据index 找出小于index的数据放在左边const leftList = list.filter((t, i) => i < index)//根据index 找出大于index的数据放在右边const rightList = list.filter((t, i) => i >= index)// 最终合并数据return [...leftList, target, ...rightList]},/*** 合并行* @param list* @param prop*/mergeRows(list = [], prop) {list.forEach((ele) => {ele.rowspan = 1})const len = list.lengthfor (let i = 0; i < len; i++) {for (let j = i + 1; j < len; j++) {if (list[i][prop] === list[j][prop]) {list[i].rowspan++list[j].rowspan--}}// 这里跳过已经重复的数据i = i + list[i].rowspan - 1}return list},},/*** 对象数组去重* @param arr 数组* @param prop 根据什么字段去重* @returns {any[]}*/ arrayDeduplication(arr, prop) {let map = new Map()return arr.filter((item) => !map.has(item[prop]) && map.set(item[prop], 1))},
}
</script>

方式二

<template><el-table:data="tableData"row-key="id":tree-props="{children: 'children', hasChildren: 'hasChildren'}"><el-table-columnv-for="(column, index) in columns":key="index":label="column.titleName":prop="column.prop":width="column.width":align="column.align"><template slot-scope="{ row, $index }">{{ row[column.prop] }}</template><el-table-columnv-if="column.childTitle"v-for="(subColumn, subIndex) in column.childTitle":key="subIndex":label="subColumn.titleName":prop="subColumn.prop":width="subColumn.width":align="subColumn.align"><template slot-scope="{ row, $index }">{{ row[subColumn.prop] }}</template></el-table-column></el-table-column></el-table>
</template><script>
export default {data() {return {tableData: [{id: 1,bigType: 'AA',smallType1: 'aa1',prop2: '2.0',prop3: '5.0',prop4: '40.0',prop5: '2.0',prop6: '5.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '2.0',prop12: '100.0',prop13: '2.0',prop14: '100.0',children: [{bigType: 'aa1',smallType1: 'aa1',prop2: '2.0',prop3: '5.0',prop4: '40.0',prop5: '2.0',prop6: '5.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '2.0',prop12: '100.0',prop13: '2.0',prop14: '100.0',id: 2,},{bigType: 'aa2',smallType1: 'aa2',prop2: '8.0',prop3: '100.0',prop4: '2.0',prop5: '8.0',prop6: '100.0',prop7: '达标',prop8: '8.0',prop9: '0.0',prop10: '0.0',prop11: '6.0',prop12: '75.0',prop13: '8.0',prop14: '100.0',id: 3,},{bigType: 'aa3',smallType1: 'aa3',prop2: '19.0',prop3: '47.5',prop4: '40.0',prop5: '19.0',prop6: '47.5',prop7: '未达标',prop8: '19.0',prop9: '0.0',prop10: '0.0',prop11: '19.0',prop12: '100.0',prop13: '19.0',prop14: '100.0',id: 4,},{bigType: 'aa4',smallType1: 'aa4',prop2: '0.0',prop3: '0.0',prop4: '0.0',prop5: '0.0',prop6: '0.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '0.0',prop12: '0.0',prop13: '0.0',prop14: '0.0',id: 5,},],},{id: 6,bigType: 'BB',prop2: '55.0',prop3: '0.0',prop4: '0.0',prop5: '76.0',prop6: '0.0',prop7: '未达标',prop8: '64.0',prop9: '0.0',prop10: '0.0',prop11: '65.0',prop12: '85.53',prop13: '61.0',prop14: '80.26',children: [{bigType: 'bb1',smallType1: 'bb1',prop2: '55.0',prop3: '0.0',prop4: '0.0',prop5: '76.0',prop6: '0.0',prop7: '未达标',prop8: '64.0',prop9: '0.0',prop10: '0.0',prop11: '65.0',prop12: '85.53',prop13: '61.0',prop14: '80.26',id: 7,},{bigType: 'bb2',smallType1: 'bb2',prop2: '55.0',prop3: '0.0',prop4: '0.0',prop5: '76.0',prop6: '0.0',prop7: '未达标',prop8: '64.0',prop9: '0.0',prop10: '0.0',prop11: '65.0',prop12: '85.53',prop13: '61.0',prop14: '80.26',id: 17,},],},{id: 8,bigType: 'DD',prop2: '0.0',prop3: '0.0',prop4: '0.0',prop5: '0.0',prop6: '0.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '0.0',prop12: '0.0',prop13: '0.0',prop14: '0.0',children: [{bigType: 'dd1',smallType1: 'dd1',prop2: '0.0',prop3: '0.0',prop4: '0.0',prop5: '0.0',prop6: '0.0',prop7: '未达标',prop8: '0.0',prop9: '0.0',prop10: '0.0',prop11: '0.0',prop12: '0.0',prop13: '0.0',prop14: '0.0',id: 9,},],},],columns: [{titleName: '类型',childTitle: null,prop: 'bigType',},{titleName: 'A',childTitle: [{titleName: 'a1',childTitle: null,prop: 'prop2',},{titleName: 'a2',childTitle: null,prop: 'prop3',},],},{titleName: 'B',childTitle: [{titleName: 'b1',childTitle: null,prop: 'prop4',},{titleName: 'b2',childTitle: null,prop: 'prop5',},{titleName: 'b3',childTitle: null,prop: 'prop6',},{titleName: 'b4',childTitle: null,prop: 'prop7',},],},{titleName: 'C',childTitle: [{titleName: 'c1',childTitle: null,prop: 'prop8',},{titleName: 'c2',childTitle: null,prop: 'prop9',},{titleName: 'c3',childTitle: null,prop: 'prop10',},],},{titleName: 'D',childTitle: [{titleName: 'd1',childTitle: null,prop: 'prop11',},{titleName: 'd2',childTitle: null,prop: 'prop12',},],},{titleName: 'W',childTitle: [{titleName: 'w1',childTitle: null,prop: 'prop13',},{titleName: 'w2',childTitle: null,prop: 'prop14',},],},],}},
}
</script>