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
本文章目录
- 专栏目标
- 示例背景
- 示例效果图
- 示例源代码
- 变更后的一维数组
- 变更后的三维数组
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: 2909222303@qq.com
* @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”
}
]
}
]
}
]