vue实现省市区三级联动

首先呈现效果图

 

 

 

1.我的是通过element-ui实现的；可*选择ui

2.话不多说，直接上代码，结构非常简单

 1 <el-form ref="form" :model="form" label-width="100px">
 2       <el-form-item  label="">
 3            一:vue实现城市联动选择
 4       </el-form-item>
 5       <el-form-item  label="">
 6            一:可清除输入框记录
 7       </el-form-item>
 8       <el-form-item  label="所在地区：" class="selform">
 9           <el-cascader
10             :options="cityinfo"
11             v-model="form.selectedoptions"
12             :change-on-select="true"
13             :clearable="true"
14             :filterable="true"
15             @change="handlechange">
16            </el-cascader>
17           <span>所选地区：{{form.city | myaddresscity}}{{form.erae | myaddresserae}}{{form.minerae | myaddressminerae}}</span>
18       </el-form-item>
19  </el-form>

 

3.js部分（重点部分是实现字段的重重过滤）

 1 el: "#app",
 2     data: {
 3         cityinfo: cityinfo,//地区数据
 4         form: {
 5             city: '',
 6             erae: '',
 7             minerae: '',
 8             selectedoptions: [],//地区筛选数组
 9         },
10     },
11     methods: {
12         handlechange(value) {
13             this.form.city = this.form.selectedoptions[0];
14             this.form.erae = this.form.selectedoptions[1]
15             this.form.minerae = this.form.selectedoptions[2]
16         },
17     },
18     /*字段过滤*/
19     filters: {
20         myaddresscity: function (value) {
21             for (y in this.cityinfo) {
22                 if (this.cityinfo[y].value == value) {
23                     return value = this.cityinfo[y].label
24                 }
25             }
26         },
27         myaddresserae: function (value) {
28             for (y in this.cityinfo) {
29                 for (z in this.cityinfo[y].children) {
30                     if (this.cityinfo[y].children[z].value == value && value != undefined) {
31                         return value = this.cityinfo[y].children[z].label;
32                     }
33                 }
34             }
35         },
36         myaddressminerae: function (value) {
37             for (y in this.cityinfo) {
38                 for (z in this.cityinfo[y].children) {
39                     for (i in this.cityinfo[y].children[z].children) {
40                         if (this.cityinfo[y].children[z].children[i].value == value && value != undefined) {
41                             return value = this.cityinfo[y].children[z].children[i].label
42                         }
43                     }
44                 }
45             }
46         },
47     },

 

4.城市数据代码格式

{
		value: 1, label: '北京', children: [
			{
				value: 1, label: '北京市', children: [
					{ value: 1, label: '东城区' },
					{ value: 2, label: '西城区' },
					{ value: 3, label: '崇文区' },
					{ value: 4, label: '宣武区' },
					{ value: 5, label: '朝阳区' },
					{ value: 6, label: '丰台区' },
					{ value: 7, label: '石景山区' },
					{ value: 8, label: '海淀区' },
					{ value: 9, label: '门头沟区' },
					{ value: 10, label: '房山区' },
					{ value: 11, label: '通州区' },
					{ value: 12, label: '顺义区' },
					{ value: 13, label: '昌平区' },
					{ value: 14, label: '大兴区' },
					{ value: 15, label: '怀柔区' },
					{ value: 16, label: '平谷区' },
					{ value: 17, label: '密云县' },
					{ value: 18, label: '延庆县' }
				]
			}
		]
	},