2020-01-13

<template>
<el-table
:data="tableData"
border
show-summary
style="width: 100%">
<el-table-column
prop="id"
label="ID"
width="180">
</el-table-column>
<el-table-column
prop="name"
label="姓名">
</el-table-column>
<el-table-column
prop="amount1"
sortable
label="数值 1">
</el-table-column>
<el-table-column
prop="amount2"
sortable
label="数值 2">
</el-table-column>
<el-table-column
prop="amount3"
sortable
label="数值 3">
</el-table-column>
</el-table>

<el-table
:data="tableData"
border
height="200"
:summary-method="getSummaries"
show-summary
style="width: 100%; margin-top: 20px">
<el-table-column
prop="id"
label="ID"
width="180">
</el-table-column>
<el-table-column
prop="name"
label="姓名">
</el-table-column>
<el-table-column
prop="amount1"
label="数值 1（元）">
</el-table-column>
<el-table-column
prop="amount2"
label="数值 2（元）">
</el-table-column>
<el-table-column
prop="amount3"
label="数值 3（元）">
</el-table-column>
</el-table>
</template>

<script>
export default {
data() {
return {
tableData: [{
id: '12987122',
name: '王小虎',
amount1: '234',
amount2: '3.2',
amount3: 10
}, {
id: '12987123',
name: '王小虎',
amount1: '165',
amount2: '4.43',
amount3: 12
}, {
id: '12987124',
name: '王小虎',
amount1: '324',
amount2: '1.9',
amount3: 9
}, {
id: '12987125',
name: '王小虎',
amount1: '621',
amount2: '2.2',
amount3: 17
}, {
id: '12987126',
name: '王小虎',
amount1: '539',
amount2: '4.1',
amount3: 15
}]
};
},
methods: {
getSummaries(param) {
const { columns, data } = param;
const sums = [];
columns.forEach((column, index) => {
if (index === 0) {
sums[index] = '总价';
return;
}
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);
sums[index] += ' 元';
} else {
sums[index] = '/';
}
})
return sums;
}
}
};
</script>

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