Vue 省市區三級聯動（基於ElementUI）

npm install element-china-area-data -S

import { provinceAndCityData, regionData, provinceAndCityDataPlus, regionDataPlus, CodeToText, TextToCode } from 'element-china-area-data'

 <el-cascader
              size="large"
              :options="options_"
              v-model="selectedOptions"
              @change="handleChange"
              placeholder="請選擇學校所在地區"
            ></el-cascader>

data(){
return{
 options_: regionData,
      selectedOptions: [],
}

}

 https://www.npmjs.com/package/element-china-area-data   npm文檔地址