需求

最近在做關(guān)于地區(qū)的的選擇，使用的是element-ui中的el-cascader級(jí)聯(lián)選擇器控件，要按照大區(qū)->省->市這種關(guān)系進(jìn)行組合，控件需要的內(nèi)容是：

        [{
          value: 'zhinan',
          label: '指南',
          children: [{
            value: 'shejiyuanze',
            label: '設(shè)計(jì)原則',
            children: [{
              value: 'yizhi',
              label: '一致'
            }, {
              value: 'fankui',
              label: '反饋'
            }, {
              value: 'xiaolv',
              label: '效率'
            }, {
              value: 'kekong',
              label: '可控'
            }]
          }, {
            value: 'daohang',
            label: '導(dǎo)航',
            children: [{
              value: 'cexiangdaohang',
              label: '側(cè)向?qū)Ш?
            }, {
              value: 'dingbudaohang',
              label: '頂部導(dǎo)航'
            }]
          }]
        }, {
          value: 'zujian',
          label: '組件',
          children: [{
            value: 'basic',
            label: 'Basic',
            children: [{
              value: 'layout',
              label: 'Layout 布局'
            }, {
              value: 'color',
              label: 'Color 色彩'
            }, {
              value: 'typography',
              label: 'Typography 字體'
            }, {
              value: 'icon',
              label: 'Icon 圖標(biāo)'
            }, {
              value: 'button',
              label: 'Button 按鈕'
            }]
          }, {
            value: 'form',
            label: 'Form',
            children: [{
              value: 'radio',
              label: 'Radio 單選框'
            }, {
              value: 'checkbox',
              label: 'Checkbox 多選框'
            }, {
              value: 'input',
              label: 'Input 輸入框'
            }, {
              value: 'input-number',
              label: 'InputNumber 計(jì)數(shù)器'
            }, {
              value: 'select',
              label: 'Select 選擇器'
            }, {
              value: 'cascader',
              label: 'Cascader 級(jí)聯(lián)選擇器'
            }, {
              value: 'switch',
              label: 'Switch 開關(guān)'
            }, {
              value: 'slider',
              label: 'Slider 滑塊'
            }, {
              value: 'time-picker',
              label: 'TimePicker 時(shí)間選擇器'
            }, {
              value: 'date-picker',
              label: 'DatePicker 日期選擇器'
            }, {
              value: 'datetime-picker',
              label: 'DateTimePicker 日期時(shí)間選擇器'
            }, {
              value: 'upload',
              label: 'Upload 上傳'
            }, {
              value: 'rate',
              label: 'Rate 評分'
            }, {
              value: 'form',
              label: 'Form 表單'
            }]
          }]

解決辦法

我使用的是Administrative-divisions-of-China這個(gè)庫的數(shù)據(jù)，但是沒有大區(qū)的，所以首先定義大區(qū)(自己定義)
region.json

//  provinces:省的code碼
[{
    "code": "10001",
    "name": "東北",
    "provinces": ["21", "22", "23"]
}, {
    "code": "10002",
    "name": "華東",
    "provinces": ["31", "32", "33", "34", "35", "36", "37"]
}, {
    "code": "10003",
    "name": "華北",
    "provinces": ["11", "12", "13", "14", "15"]
}, {
    "code": "10004",
    "name": "華中",
    "provinces": ["41", "42", "43"]
}, {
    "code": "10005",
    "name": "華南",
    "provinces": ["44", "45", "46"]
}, {
    "code": "10006",
    "name": "西南",
    "provinces": ["50", "51", "52", "53", "54"]
}, {
    "code": "10007",
    "name": "西北",
    "provinces": ["61", "62", "63", "64", "65"]
}]

省和市的json在Administrative-divisions-of-China中可以下載，因?yàn)椴恍枰玫街陛犑械膮^(qū)，所以我分別下載省級(jí)和地級(jí)的json文件，自己拼接了

image

index.js代碼如下

var fs = require("fs");
var cityFile = "./city.json";
var provincesFile = "./provinces.json";
var regionFile = "./region.json";

//同步加載json文件
var cityRes = JSON.parse(fs.readFileSync(cityFile));
var provincesRes = JSON.parse(fs.readFileSync(provincesFile));
var regionRes = JSON.parse(fs.readFileSync(regionFile));


//組合省和市的數(shù)據(jù)
var arr = provincesRes.map(provincesVal => {
  provincesVal.children = [];
  cityRes.map(cityVal => {
    if (provincesVal.code === cityVal.provinceCode) {
      delete cityVal.provinceCode;
      provincesVal.children.push(cityVal);
    }
  });
  return provincesVal;
});

//組合大區(qū)、省和市的數(shù)據(jù)
var address = regionRes.map(val => {
  val.children = [];
  val.provinces.forEach(element => {
    arr.map(val1 => {
      if (element === val1.code) {
        val.children.push(val1);
      }
    });
  });
  delete val.provinces;
  return val;
});

//把數(shù)據(jù)寫入文件
fs.writeFile("address.json", JSON.stringify(address), function(err) {
  if (err) {
    return console.error(err);
  }
  console.log("數(shù)據(jù)寫入成功！");
  fs.readFile("address.json", function(err, data) {
    if (err) {
      return console.error(err);
    }
    console.log("異步讀取文件數(shù)據(jù): " + data.toString());
  });
});

使用

執(zhí)行

node index.js

因?yàn)樯?code>json中的key跟控件中不一樣，這邊我直接使用編譯器去全局替換了

code --> value
name --> label

最后導(dǎo)入json文件使用,效果如下

image