用Vue2仿京東省市區三級聯動效果

三級聯動，隨着越來越多的審美，出現了很多種，好多公司都仿着淘寶的三級聯動 ，好看時尚，so我們公司也一樣……為了貼代碼方便，我把寫在data里面省市區的json獨立了出來，下載貼進去即可用，鏈接如下

首先頁面顯示如下：

 

然后我們縣級所在地區會出現三級聯動，如下：（以下是片段，背景色未截取）

這個張什么樣，以什么形式出現，取決於貴公司的UI需求，我們公司是做成彈出層了。。然后背景色透明，這里為了節省流量，我只截取了一段，最后顯示如下：

如果貴公司也跟我們需求一樣，希望這個可以幫到你們。下面是在vue2項目中寫的三級聯動代碼以及css樣式：

<template>
    <section class="myAddress">
        <section>
           <section class="cont" @click="choseAdd()">
              <section>
                 <span>所在地區：{{Province?Province:''}} {{City?City:''}} {{District?District:''}}</span>
              </section>
              <img src="../../assets/main/right.png" alt="">
              <div style="clear: both"></div>
           </section>
        </section>
        <!-- 居住地址三級聯動選項 -->
        <section class="showChose" v-show="showChose">
          <section class="address">
            <section class="title">
              <h4>居住地址</h4>
              <span @click="closeAdd()">×</span>
            </section>
            <section class="title">
              <div class="area" @click="provinceSelected()">
                 {{Province?Province:info[province-1].name}}
              </div>
              <div class="area" @click="citySelected()" :class="City?'':'active'">
                 {{City?City:'請選擇'}}
              </div>
              <div class="area" @click="districtSelected()" :class="District?'':'active'" v-show="City">
                 {{District?District:'請選擇'}}
              </div>
            </section>
            <ul>
               <li class="addList" v-for="(v,k) in info" 
                   @click="getProvinceId(v.id, v.name, k)" 
                   v-show="showProvince" 
                   :class="v.selected ? 'active' : ''">{{v.name}}</li>
               <li class="addList" v-for="(v,k) in showCityList" 
                   @click="getCityId(v.id, v.name, k)" 
                   v-show="showCity" 
                   :class="v.selected ? 'active' : ''">{{v.name}}</li>
               <li class="addList" v-for="(v,k) in showDistrictList" 
                   @click="getDistrictId(v.id, v.name, k)" 
                   v-show="showDistrict" 
                   :class="v.selected ? 'active' : ''">{{v.name}}</li>
             </ul>
          </section>
        </section>
        <!-- 頁面內容 -->
        <section class="cont">
            <span>詳細地址：</span>
            <input type="text" v-model="address" placeholder="  請填寫詳細地址">
        </section>
    </section>
</template>
<script>
    import {
            mapActions,
            mapGetters
    } from 'vuex';
    import api from './../../fetch/api.js'
    export default {
        name: 'address',
        data(){},此處的data直接下載json復制進去即可。http://www.cnblogs.com/lguow/p/9272563.html
        components: {
            MineHeader
        },
        computed: {
                ...mapGetters([
                    'BCcontextPathSrc',
                    'sessionId',
                    'token',
                ]),
    },
    methods: {
        choseAdd: function() {
            this.showChose = true;
        },
        closeAdd: function() {
            this.showChose = false;
        },
        _filter(add, name, code) {
            let result = [];
            for (let i = 0; i < add.length; i++) {
                if (code == add[i].id) {
                    result = add[i][name];
                }
            }
            return result;
        },
        getProvinceId: function(code, input, index) {
            this.province = code;
            this.Province = input;
            this.showProvince = false;
            this.showCity = true;
            this.showDistrict = false;
            this.showCityList = this._filter(this.info, 'city', this.province);
            // 點擊選擇當前
            this.info.map(a => a.selected = false);
            this.info[index].selected = true;
            this.areaProvince = input;
        },
        provinceSelected: function() {
            // 清除市級和區級列表
            this.showCityList = false;
            this.showDistrictList = false;
            // 清除市級和區級選項
            this.City = false;
            this.District = false;
            // 選項頁面的切換
            this.showProvince = true;
            this.showCity = false;
            this.showDistrict = false;
        },
        getCityId: function(code, input, index) {
            this.city = code;
            this.City = input;
            this.showProvince = false;
            this.showCity = false;
            this.showDistrict = true;
            this.showDistrictList = this._filter(this.showCityList, 'district', this.city);
            // 選擇當前添加active
            this.showCityList.map(a => a.selected = false);
            this.showCityList[index].selected = true;
            this.areaCity = input;
        },
        citySelected: function() {
            this.showProvince = false;
            this.showCity = true;
            this.showDistrict = false;
        },
        getDistrictId: function(code, input, index) {
            this.district = code;
            this.District = input;
            // 選擇當前添加active
            this.showDistrictList.map(a => a.selected = false);
            this.showDistrictList[index].selected = true;
            // 選取市區選項之后關閉彈層
            this.showChose = false;
            this.areaDistrict = input;
        },
        districtSelected: function() {
            this.showProvince = false;
            this.showCity = false;
            this.showDistrict = true;
        },
        saveProfile: function() {
            api.commonApi('后台接口', 這里是貴公司后台接口，按照你們公司的改了就好
                    'param_key={"head":{"TYPE":"ADD_UPD_INFO",' +
                    '"SESSION_ID":"' + this.sessionId + '",' +
                    '"TOKEN":"' + this.token + '","DEVICE_ID":""},' +
                    '"param":{"PROVINCE":"' + this.areaProvince + '", ' +
                    '"CITY":"' + this.areaCity + '", "COUNTY":"' + this.areaDistrict + '",' +
                    '"ADDRESS": "' + this.address + '"}}')
                    .then(res => {
                console.log(res.data);
        });
        }
    }
    }
</script>
<style scoped>
    .myAddress {
        width: 100%;
        background-color: white;
        border-top: 4px solid rgba(245, 245, 245, 1);
        color: #333;
    }
    .myAddress .cont {
        border-bottom: 1px solid rgba(245, 245, 245, 0.8);
    }
    .myAddress .cont span {
        display: inline-block;
        font-size: 0.28rem;
        color: #333;
        line-height: 0.88rem;
        margin-left: 0.32rem;
    }
    .myAddress .cont section {
        float: left;
    }
    .myAddress .cont img {
        float: right;
        width: 0.14rem;
        height: 0.24rem;
        margin: 0.32rem 0.32rem 0.32rem 0;
    }
    .showChose {
        width: 100%;
        height: 100%;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 120;
        background: rgba(77, 82, 113, 0.8);
    }
    .address {
        position: absolute;
        bottom: 0;
        left: 0;
        z-index: 121;
        background: #fff;
        width: 100%;
    }
    .title h4 {
        display: inline-block;
        margin-left: 3.2rem;
        font-size: 0.32rem;
        line-height: 0.88rem;
        font-weight: normal;
        color: #999;
    }
    .title span {
        margin: 0.42rem 0 0 2.2rem;
        font-size: 0.45rem;
        line-height: 0.34rem;
        color: #D8D8D8;
    }
    .area {
        display: inline-block;
        font-size: 0.24rem;
        line-height: 0.88rem;
        margin-left: 0.42rem;
        color: #333;
    }
    .addList {
        padding-left: 0.32rem;
        font-size: 0.34rem;
        line-height: 0.88rem;
        color: #333;
    }
    /* 修改的格式 */
    .address ul {
        height: 100%;
        margin-left: 5%;
        max-height: 4.4rem;
        overflow: auto;
    }
    .address .title .active {
        color: #0071B8;
        border-bottom: 0.02rem solid #0071B8;
    }
    .address ul .active {
        color: #0071B8;
    }
</style>

這樣就完成了一個省市區的三級聯動……悲催啊……整個項目里到處都是坑爹的UI坑爹的需求……