elementui table 合并列

<template>
	<div class="container">
		<el-table :data="tableData" :border="true" :header-cell-style="{ 'font-weight': 'normal', 'text-align': 'left' }"
			:cell-style="{ 'text-align': 'left' }" size="mini" style="width: 100%" :span-method="arraySpanMethod">
			<el-table-column type="index" label="序号" width="100"></el-table-column>
			<el-table-column prop="product_name" label="名称1"></el-table-column>
			<el-table-column prop="cap_name" label="名称2"></el-table-column>
			<el-table-column prop="name3" label="名称3"></el-table-column>
			<el-table-column prop="name4" label="名称4">
				<template slot-scope="scope">
					<el-input v-model="scope.row.name4" placeholder="请输入设备名称" maxlength="30" show-word-limit @input="inputFn" />
				</template>
			</el-table-column>
			<el-table-column prop="name5" label="名称5">
				<template slot-scope="scope">
					<el-input v-model="scope.row.name5" placeholder="请输入设备名称" maxlength="30" show-word-limit @input="inputFn" />
				</template>
			</el-table-column>
			<el-table-column prop="name6" label="总计">
				<template slot-scope="scope">
					<span>{{Number(scope.row.name5).toLocaleString() + Number(scope.row.name4).toLocaleString()}}</span>
				</template>
			</el-table-column>
			<el-table-column label="操作">
				<template slot-scope="scope">
					<el-button @click="addRow()" class="button" type="text" size="small"> <i
							class="el-icon-circle-plus-outline"></i></el-button>
					<el-button @click="deleteEach(scope.row)" v-if="!scope.row.span" class="button" type="text" size="small">
						<i class="el-icon-remove-outline"></i></el-button>
				</template>
			</el-table-column>
		</el-table>
		<el-table :data="tableData2" :border="true" :show-header="false"
			:header-cell-style="{ 'font-weight': 'normal', 'text-align': 'left' }" :cell-style="{ 'text-align': 'left' }"
			size="mini" style="width: 100%" :span-method="arraySpanMethod">
			<el-table-column label="序号" width="100">
				<template slot-scope="scope">
					<span>{{ ((currentPage-1)*pageSize+scope.$index+1 + tableData.length) }}</span>
				</template>
			</el-table-column>
			<el-table-column prop="product_name" label="名称1"></el-table-column>
			<el-table-column prop="cap_name" label="名称2"></el-table-column>
			<el-table-column prop="name3" label="名称3"></el-table-column>
			<el-table-column prop="name4" label="名称4"></el-table-column>
			<el-table-column prop="name5" label="名称5"></el-table-column>
			<el-table-column label="操作">
				<template slot-scope="scope">
					<el-button @click="addRow2()" class="button" type="text" size="small"> <i
							class="el-icon-circle-plus-outline"></i></el-button>
					<el-button @click="deleteEach2(scope.row)" v-if="!scope.row.span" class="button" type="text" size="small">
						<i class="el-icon-remove-outline"></i></el-button>
				</template>
			</el-table-column>
		</el-table>
	</div>
</template>
<script>
	export default {
		name: 'tableCom',
		data() {
			return {
				// 注释：示例是用参数-product_name进行处理-该例好像只有数据是连续aaaa  或  bbbb才可以（第一条是a第二条是a第三条是b---不能第二条是b，第三条是a）
				tableData: [{
						product_name: '合同类支出',
						name3: '合同类支出',
						name4: null,
						name5: 0,
						span: true,
						name6: null,
						cap_name: '合同类支出'
					},
					{
							product_name: '合同类支出',
							cap_name: '合同类支出',
							name3: '合同类支出',
							name4: 4,
							name5: 0,
							span: true,
							name6: 0
						},
					{
						product_name: '集团总部小计',
						cap_name: '集团总部小计',
						name3: '集团总部小计',
						name4: 24,
						name5: 0,
						span: false,
						name6: 0
					}
				],
				tableData1: [{
						product_name: '合同类支出',
						cap_name: '合同类支出',
						name3: '合同类支出',
						name4: 'name14',
						name5: 0,
						span: true
					},
					{
						product_name: '集团总部小计',
						cap_name: '集团总部小计',
						name3: '集团总部小计',
						name4: 'name24',
						name5: 0,
						span: false
					}
				],
				tableData2: [{
						product_name: '非合同类',
						cap_name: '非合同类',
						name3: '非合同类',
						name4: 'name14',
						name5: 0,
						span: true
					},
					{
						product_name: 1,
						cap_name: 1,
						name3: 'name23',
						name4: 'name24',
						name5: 0,
						span: false
					}
				],
				tableData3: [{
						product_name: 'tong',
						cap_name: 'tong',
						name3: 'tong',
						name4: 'name14',
						name5: 0,
						span: true
					},
					{
						product_name: 1,
						cap_name: 1,
						name3: 'name23',
						name4: 'name24',
						name5: 0,
						span: false
					}
				],
				currentPage: 1,
				pageSize: 10
			};
		},
		methods: {
			inputFn() {
				console.log('inputFn', this.tableData)
			},
			arraySpanMethod({
				row,
				column,
				rowIndex,
				columnIndex
			}) {
				// 合并行  产品名字相同合并
				// if (columnIndex === 1) {
				// 	if (rowIndex === 0 || row.product_name != this.dataSource[rowIndex - 1].product_name) {
				// 		let rowspan = 0;
				// 		this.dataSource.forEach(element => {
				// 			if (element.product_name === row.product_name) {
				// 				rowspan++;
				// 			}
				// 		});
				// 		return [rowspan, 1];
				// 	} else {
				// 		return [0, 0];
				// 	}
				// }

				// 合并列 名称值都为1 的合并
				let colspan = 0;
				let colkeys = Object.keys(row);
				let currentindex = columnIndex - 1;
				if (row[colkeys[currentindex]] === '合同类支出' || row[colkeys[currentindex]] === '非合同类' || row[colkeys[
					currentindex]] === '集团总部小计') {
					if (row[colkeys[currentindex - 1]] != row[colkeys[currentindex]]) {
						for (let i = currentindex; i < colkeys.length; i++) {
							if (row[colkeys[i]] === '合同类支出' || row[colkeys[i]] === '非合同类' || row[colkeys[i]] === '集团总部小计') {
								colspan++;
							} else {
								break;
							}
						}
						console.log('colspan', colspan)
						return [1, colspan];
					} else {
						return [0, 0];
					}
				}
			},
			deleteEach(row) {
				this.tableData = this.tableData.filter(v => v.id !== row.id);
			},
			deleteEach2(row) {
				this.tableData2 = this.tableData2.filter(v => v.id !== row.id);
			},
			addRow() {
				this.addPublicFn(this.tableData)
			},
			addRow2() {
				this.addPublicFn(this.tableData2)
			},
			addPublicFn(list) {
				let isTable = list.filter(d => d.showfile == true)
				console.log('list', list)
				isTable.length != 0 ? list.push({
					product_name: '',
					cap_name: '',
					name3: '',
					name4: '',
					name5: 0,
					delTag: true,
					id: new Date().getTime()
				}) : list.push({
					product_name: '',
					cap_name: '',
					name3: '',
					name4: '',
					name5: 0,
					delTag: true,
					id: new Date().getTime()
				})
			}
		},
		created() {

		}
	};
</script>


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