el-table spanMethod 合并行或者列的源码查看
2023-09-12 本文已影响0人
jeneen1129
使用说明
// 官方例子
<template>
<div>
<el-table
:data="tableData"
:span-method="arraySpanMethod"
border
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"
:span-method="objectSpanMethod"
border
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>
</div>
</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: {
arraySpanMethod({ row, column, rowIndex, columnIndex }) {
if (rowIndex % 2 === 0) {
if (columnIndex === 0) {
return [1, 2];
} else if (columnIndex === 1) {
return [0, 0];
}
}
},
objectSpanMethod({ row, column, rowIndex, columnIndex }) {
if (columnIndex === 0) {
if (rowIndex % 2 === 0) {
return {
rowspan: 2,
colspan: 1
};
} else {
return {
rowspan: 0,
colspan: 0
};
}
}
}
}
};
</script>
源码查看
直接到 node_modules
下面找到 element-ui/packages/table/src/table.vue
直接搜索 spanMethod
经过查找,在
table-body.js
中找到,使用了 spanMethod
可以看到是直接作用在
td
的 colspan
和 rowspan
上
实践问题
td rowspan='0'
时内容会占用发生错行
查看 el-table
生成之后的 dom
, 可以看到,如果 rowspan
为 0
了 td
就没有渲染