专栏目标
在vue和element UI联合技术栈的操控下，本专栏提供行之有效的源代码示例和信息点介绍，做到灵活运用。
（1）提供vue2的一些基本操作：安装、引用，模板使用，computed，watch，生命周期(beforeCreate，created,beforeMount，mounted, beforeUpdate，updated, beforeDestroy，destroyed，activated，deactivated，errorCaptured，components，)、 $root , $parent , $children , $slots , $refs , props, $emit , eventbus ,provide / inject, Vue.observable, $listeners, $attrs, $nextTick , v-for, v-if, v-else,v-else-if，v-on，v-pre，v-cloak，v-once，v-model， v-html, v-text, keep-alive，slot-scope， filters, v-bind，.stop, .native, directives，mixin，render，国际化，Vue Router等
（2）提供element UI的经典操作：安装，引用，国际化，el-row，el-col，el-button，el-link，el-radio，el-checkbox ，el-input，el-select, el-cascader, el-input-number, el-switch,el-slider, el-time-picker, el-date-picker, el-upload, el-rate, el-color-picker, el-transfer, el-form, el-table, el-tree, el-pagination,el-badge,el-avatar,el-skeleton, el-empty, el-descriptions, el-result, el-statistic, el-alert, v-loading, $message, $alert, $prompt, $confirm , $notify, el-breadcrumb, el-page-header,el-tabs ,el-dropdown,el-steps,el-dialog, el-tooltip, el-popover, el-popconfirm, el-card, el-carousel, el-collapse, el-timeline, el-divider, el-calendar, el-image, el-backtop，v-infinite-scroll， el-drawer等
示例背景
使用vue项目时候，遇到这样一个需求，将一维数组做一定的转换，增加一些变量，然后将变更后的一维数组转化为三维数组。这个示例中实现了转换。
示例效果图
示例源代码
/*
* @Author: 大剑师兰特（xiaozhuanlan），还是大剑师兰特（CSDN）
* @此源代码版权归大剑师兰特所有，可供学习或商业项目中借鉴，未经授权，不得重复地发表到博客、论坛，问答，git等公共空间或网站中。
* @Email: [email protected]
* @weixin: gis-dajianshi
* @First published in CSDN
* @First published time: 2024-01-07
*/
<template>
<div class="djs-box">
<div class="topBox">
<h3>vue中将一维数组变换为三维数组 </h3>
<div>大剑师兰特, 还是大剑师兰特，gis-dajianshi</div>
<h4>
<el-button @click="go()" type="primary" size="mini"> 转换数据</el-button>
</h4>
</div>
<div class="dajianshi">
<div class="left">
<h4>一维数组</h4>
<p v-for="(item,index) in arr" :key="index"> 时间：{
{
item.time}}-组别：{
{
item.satGroupName}}</p>
</div>
<div class="middle">
<h4>变换后的一维数组</h4>
<p v-for="(item,index) in arr1" :key="index"> 时间：{
{
item.time}}- 年份：{
{
item.year}}- 原索引：{
{
item.indexId}}</p>
</div>
<div class="right">
<h4>变成三维数组</h4>
<div v-for="(item1,index1) in arr3" :key="index1"> ● 时间：{
{
item1.time}}
<div v-for="(item2,index2) in item1.children" :key="index2">
♥ 组别：{
{
item2.satGroupName}}-代号-{
{
item2.satName}}
<div v-for="(item3,index3) in item2.children" :key="index3">
★ {
{
item3.inner}} - 时间：{
{
item3.time}}
</div>
</div>
</div>
</div>
</div>
</div>
</template>
<script>
export default {
data() {
return {
arr: [{
'time': '2023-12-07',
'satName': 'S10',
'satGroupName': 'G10',
'inner': '内部1'
},
{
'time': '2023-12-07',
'satName': 'S10',
'satGroupName': 'G10',
'inner': '内部2'
},
{
'time': '2023-12-07',
'satName': 'S11',
'satGroupName': 'G11',
'inner': '内部3'
},
{
'time': '2023-12-08',
'satName': 'S10',
'satGroupName': 'G10',
'inner': '内部4'
},
{
'time': '2023-12-08',
'satName': 'S11',
'satGroupName': 'G11',
'inner': '内部5'
},
{
'time': '2023-12-09',
'satName': 'S12',
'satGroupName': 'G12',
'inner': '内部6'
}
],
arr1: [],
arr3: [],
}
},
mounted() {
},
methods: {
go() {
this.arr1= this.dajianshi_arr1to1(this.arr)
this.arr3 = this.dajianshi_arr1to3(this.arr1)
},
dajianshi_arr1to1(arr) {
let newArr = arr.map((item, index) => {
return {
...item,
indexId: index,
year:item.time.substr(0, 4),
}
})
return newArr;
},
dajianshi_arr1to3(arr) {
let keys = Object.keys(arr[0])
let level1 = 'time' //获取一级属性名称
let level2 = 'satName' //获取二级属性名称
let list = Array.from(new Set(
arr.map(item => {
return item[level1]
})))
let subList = []
list.forEach(res => {
arr.forEach(ele => {
if (ele[level1] === res) {
let nameArr = subList.map(item => item.time)
console.log(nameArr)
if (nameArr.indexOf(res) !== -1) {
let nameArr2 = subList[nameArr.indexOf(res)].children.map(item => item
.satName)
if (nameArr2.indexOf(ele[level2]) !== -1) {
subList[nameArr.indexOf(res)].children[nameArr2.indexOf(ele[level2])]
.children.push({
...ele
})
} else {
subList[nameArr.indexOf(res)].children.push({
satName: ele[level2],
satGroupName: ele.satGroupName,
children: [{
...ele
}]
})
}
} else {
subList.push({
time: res,
// label: res,
children: [{
satName: ele[level2],
satGroupName: ele.satGroupName,
children: [{
...ele
}]
}]
})
}
}
})
})
return subList
}
}
}
</script>
<style scoped>
.djs-box {
width: 1000px;
height: 680px;
margin: 50px auto;
border: 1px solid blueviolet;
}
.topBox {
margin: 0 auto 0px;
padding: 10px 0 20px;
background: blueviolet;
color: #fff;
}
.dajianshi {
width: 98%;
height: 480px;
margin: 5px auto 0;
}
.left {
width: 30%;
height: 100%;
float: left;
overflow-y: auto;
background: #fed;
}
.middle {
width: 35%;
height: 100%;
float: left;
overflow-y: auto;
background: #dcb;
}
.right {
width: 35%;
height: 100%;
float: left;
overflow-y: auto;
background: #edc;
text-align: left;
padding-left: 15px;
box-sizing: border-box;
}
</style>
变更后的一维数组
[
{
“time”: “2023-12-07”,
“satName”: “S10”,
“satGroupName”: “G10”,
“inner”: “内部1”,
“indexId”: 0,
“year”: “2023”
},
{
“time”: “2023-12-07”,
“satName”: “S10”,
“satGroupName”: “G10”,
“inner”: “内部2”,
“indexId”: 1,
“year”: “2023”
},
{
“time”: “2023-12-07”,
“satName”: “S11”,
“satGroupName”: “G11”,
“inner”: “内部3”,
“indexId”: 2,
“year”: “2023”
},
{
“time”: “2023-12-08”,
“satName”: “S10”,
“satGroupName”: “G10”,
“inner”: “内部4”,
“indexId”: 3,
“year”: “2023”
},
{
“time”: “2023-12-08”,
“satName”: “S11”,
“satGroupName”: “G11”,
“inner”: “内部5”,
“indexId”: 4,
“year”: “2023”
},
{
“time”: “2023-12-09”,
“satName”: “S12”,
“satGroupName”: “G12”,
“inner”: “内部6”,
“indexId”: 5,
“year”: “2023”
}
]
变更后的三维数组
[
{
“time”: “2023-12-07”,
“children”: [
{
“satName”: “S10”,
“satGroupName”: “G10”,
“children”: [
{
“time”: “2023-12-07”,
“satName”: “S10”,
“satGroupName”: “G10”,
“inner”: “内部1”,
“indexId”: 0,
“year”: “2023”
},
{
“time”: “2023-12-07”,
“satName”: “S10”,
“satGroupName”: “G10”,
“inner”: “内部2”,
“indexId”: 1,
“year”: “2023”
}
]
},
{
“satName”: “S11”,
“satGroupName”: “G11”,
“children”: [
{
“time”: “2023-12-07”,
“satName”: “S11”,
“satGroupName”: “G11”,
“inner”: “内部3”,
“indexId”: 2,
“year”: “2023”
}
]
}
]
},
{
“time”: “2023-12-08”,
“children”: [
{
“satName”: “S10”,
“satGroupName”: “G10”,
“children”: [
{
“time”: “2023-12-08”,
“satName”: “S10”,
“satGroupName”: “G10”,
“inner”: “内部4”,
“indexId”: 3,
“year”: “2023”
}
]
},
{
“satName”: “S11”,
“satGroupName”: “G11”,
“children”: [
{
“time”: “2023-12-08”,
“satName”: “S11”,
“satGroupName”: “G11”,
“inner”: “内部5”,
“indexId”: 4,
“year”: “2023”
}
]
}
]
},
{
“time”: “2023-12-09”,
“children”: [
{
“satName”: “S12”,
“satGroupName”: “G12”,
“children”: [
{
“time”: “2023-12-09”,
“satName”: “S12”,
“satGroupName”: “G12”,
“inner”: “内部6”,
“indexId”: 5,
“year”: “2023”
}
]
}
]
}
]