VUE三级联动的下拉框
2021/8/26 23:08:21
本文主要是介绍VUE三级联动的下拉框,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
1. 首先关于后台的代码,三级联动和二级联动没有区别也是通过字典字段的查询实现联动
//三级联动下拉框 public List<City> GetCid(int pid) { return db.City.Where(m => m.ParentId == pid).ToList(); }
2. 前台的代码还是比较麻烦的,要写三个方法
<tr> <td>籍贯</td> <td colspan="3"> 省 <select v-model="formData.ProvinceId" v-on:change="getCity"> <option v-for="item in provinceItem" :value="item.CId">{{item.CName}}</option> </select>- 市 <select v-model="formData.CityId" v-on:change="getCounty"> <option v-for="item in cityItem" :value="item.CId">{{item.CName}}</option> </select>- 县 <select v-model="formData.CountyId"> <option v-for="item in countyItem" :value="item.CId">{{item.CName}}</option> </select> </td> </tr> <script> let app = new Vue({ el: "#app", data() { return { formData: { ENumber: "", EName: "", ESex: "", DId: "0", EJob: "", EPhone: "", EMail: "", ProvinceId: "0", CityId: "0", CountyId: "0", Birthday: "", Remark: "" }, provinceItem: [],//省 cityItem: [],//市 countyItem:[]//县 } }, methods: { //省 getProvince() { axios.get('/CRM/GetCid?pid=0').then(res => { this.provinceItem = res.data; this.provinceItem.unshift({ "CId": "0", "CName": "请选择" }) }) }, //市 getCity() { this.cityItem = []; this.countyItem = []; axios.get('/CRM/GetCid?pid=' + this.formData.ProvinceId).then(res => { this.cityItem = res.data; this.cityItem.unshift({ "CId": "0", "CName": "请选择" }); this.formData.CityId = this.cityItem[0].CId; }) }, //县 getCounty() { this.countyItem = []; axios.get('/CRM/GetCid?pid=' + this.formData.CityId).then(res => { this.countyItem = res.data; this.countyItem.unshift({ "CId": "0", "CName": "请选择" }); this.formData.CountyId = this.countyItem[0].CId; }) } }, created: function () { this.getDept(); this.getProvince(); } }) </script>
以上就是VUE三级联动
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