elementplus el-table(行列互换)转置

Element Plus v2.4.0, repl v3.4.0

<template>
<div><el-table :data="tableData" style="width: 100%"><el-table-column prop="name" label="名字" width="180" /><el-table-column prop="weight" label="重量" width="180" /><el-table-column prop="maxWeight" label="最大重量" width="180" /><el-table-column prop="height" label="高度" width="180" /><el-table-column prop="width" label="宽度" width="180" /><el-table-column prop="speed" label="速度" width="180" /></el-table><!-- 转置代码 --><div>转置table</div><el-table :data="trans_tableData" style="width:100%"><el-table-columnprop="title"label=""></el-table-column><el-table-columnv-for="(item,index) in props":key="index":prop="item.value":label="item.label"><template v-slot:header><span v-html="item.label"></span></template><template v-slot="{ row }"><span>{{ row[item.value] }}</span></template></el-table-column>
</el-table>
</div>
</template><script lang="ts" setup>
let tableData = [{name: '歼-20',weight: '25吨',maxWeight: '37吨',height: '4.69米',width: '21.2米',speed: '2马赫'},{name: '歼-20-1',weight: '25吨-1',maxWeight: '37吨-1',height: '4.69米-1',width: '21.2米-1',speed: '2马赫-1'}]
const props = tableData.map((t) => {return {label: t.name,value: t.id || t.name}
})
console.log("props=",props)
function isExist (newArr, name) {for (let i = 0; i < newArr.length; i++) {if (newArr[i].title === name) {return newArr[i]}}return false
}/***  定义映射字段表(最好取全量字段)* */
const mapObj = {name: '名称',weight: '重量',maxWeight: '最大载重',height: '高度',width: '宽度',speed: '速度'}
const newArr = []
for (const t in mapObj) {for (let i = 0; i < tableData.length; i++) {const item = tableData[i]const result = isExist(newArr, mapObj[t])if (result) {result[item.name] = item[t] || ''} else {const obj = {}obj.title = mapObj[t]obj[item.name] = item[t] || ''newArr.push(obj)}}
}
console.log("newArr",newArr)
const trans_tableData = newArr
</script>