vue2的 element 表格单元格合并

<template>
<div>
<el-table show-summary :summary-method="getSummaries" :span-method="objectSpanMethod" :data="tableData" row-key="id" ref="tableDom" border>
<el-table-column label="序号" width="55" align="center">
<template slot-scope="scope">{{ scope.$index + 1 }}</template>
</el-table-column>
<el-table-column prop="name" label="分类" align="center"></el-table-column>
<el-table-column prop="num1" label="数量1" align="center"></el-table-column>
<el-table-column prop="num2" label="数量2" align="center"></el-table-column>
<el-table-column prop="num3" label="数量3" align="center"></el-table-column>
<el-table-column prop="type" label="类型" align="center"></el-table-column>
<el-table-column prop="num4" label="数量4" align="center"></el-table-column>
<el-table-column prop="num5" label="数量5" align="center"></el-table-column>
</el-table>
</div>
</template>
<script>
export default {
name: '',
components: {},
props: {},
data() {
return {
tableData: [{
name: '名称1',
num1: '2',
num2: '3',
num3: '4',
num4: '连续',
num5: '6',
num6: '7',
}, {
name: '名称2',
num1: '2',
num2: '3',
num3: '4',
num4: '连续',
num5: '6',
num6: '7',
}, {
name: '名称2',
num1: '2',
num2: '3',
num3: '4',
num4: '连续',
num5: '6',
num6: '7',
}, {
name: '名称3',
num1: '2',
num2: '3',
num3: '4',
num4: '连续',
num5: '6',
num6: '7',
}, {
name: '名称4',
num1: '2',
num2: '3',
num3: '4',
num4: '连续',
num5: '6',
num6: '7',
}, {
name: '名称4',
num1: '2',
num2: '3',
num3: '4',
num4: '连续',
num5: '6',
num6: '7',
}]
}
},
filters: {},
computed: {},
watch: {},
created() {},
mounted() {},
beforeDestroy() {},
methods: {
// 合计
getSummaries (param) {
const { columns, data } = param
const sums = []
columns.forEach((column, index) => {
if (index === 0) {
sums[index] = '合计'
} else if (index === 2 || index === 7) {
const values = data.map(item => Number(item[column.property]))
if (!values.every(value => isNaN(value))) {
sums[index] = values.reduce((prev, curr) => {
const value = Number(curr)
if (!isNaN(value)) {
return prev + curr
} else {
return prev
}
}, 0)
} else {
sums[index] = ''
}
} else {
sums[index] = ''
}
})
return sums
},
// table合并列
objectSpanMethod({ row, column, rowIndex, columnIndex }) {
let data = this.tableData; //拿到当前table中数据
let cellValue = row[column.property]; //当前位置的值
let noSortArr = ['num1', 'num2', 'num3', 'num4', 'num5', 'num6']; //不需要合并的字段（不进行合并行的prop）
if (cellValue && !noSortArr.includes(column.property)) {
let prevRow = data[rowIndex - 1]; //获取到上一条数据
let nextRow = data[rowIndex + 1]; //下一条数据
if (prevRow && prevRow[column.property] === cellValue) { //当有上一条数据，并且和当前值相等时
return { rowspan: 0, colspan: 0 };
} else {
let countRowspan = 1;
while (nextRow && nextRow[column.property] === cellValue) { //当有下一条数据并且和当前值相等时,获取新的下一条
nextRow = data[++countRowspan + rowIndex];
}
if (countRowspan > 1) {
return { rowspan: countRowspan, colspan: 1 };
}
}
}
},
}
}
</script>
<style scoped lang="less">
</style>