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”
}
]
}
]
}
]
