<div>  <mt-picker :slots="myAddressSlots" @change="onMyAddressChange"></mt-picker>  <p>地址3級(jí)聯(lián)動(dòng)：{{myAddressProvince}} {{myAddressCity}} {{myAddresscounty}}</p></div>

<script>  import { Picker } from 'mint-ui';  import myaddress from '../../../static/address3.json'     //引入省市區(qū)數(shù)據(jù)  export default {    name: '',    components: {      'mt-picker': Picker    },    props: {},    data () {      return {       myAddressSlots: [          {            flex: 1,            defaultIndex: 1,                values: Object.keys(myaddress),  //省份數(shù)組            className: 'slot1',            textAlign: 'center'          }, {            divider: true,            content: '-',            className: 'slot2'          }, {            flex: 1,            values: [],            className: 'slot3',            textAlign: 'center'          },          {            divider: true,            content: '-',            className: 'slot4'          },          {            flex: 1,            values: [],            className: 'slot5',            textAlign: 'center'          }        ],        myAddressProvince:'省',        myAddressCity:'市',        myAddresscounty:'區(qū)/縣',      }    },    created() {    },    methods: {     onMyAddressChange(picker, values) {       if(myaddress[values[0]]){  //這個(gè)判斷類(lèi)似于v-if的效果（可以不加，但是vue會(huì)報(bào)錯(cuò)，很不爽）          picker.setSlotValues(1,Object.keys(myaddress[values[0]])); // Object.keys()會(huì)返回一個(gè)數(shù)組，當(dāng)前省的數(shù)組          picker.setSlotValues(2,myaddress[values[0]][values[1]]); // 區(qū)/縣數(shù)據(jù)就是一個(gè)數(shù)組          this.myAddressProvince = values[0];          this.myAddressCity = values[1];          this.myAddresscounty = values[2];        }      },    },    mounted(){      this.$nextTick(() => { //vue里面全部加載好了再執(zhí)行的函數(shù)  （類(lèi)似于setTimeout）        this.myAddressSlots[0].defaultIndex = 0            // 這里的值需要和 data里面 defaultIndex 的值不一樣才能夠初始化        //因?yàn)槲覜](méi)有看過(guò)源碼（我猜測(cè)是因?yàn)閿?shù)據(jù)沒(méi)有改變，不會(huì)觸發(fā)更新）      });    }  }</script>