uni-app是一款基于Vue.js的跨平台开发框架,我们常常在开发中需要实现省市区选择的功能。本文将介绍如何利用uni-app的一些组件和插件来实现省市区选择功能。
首先,我们需要准备一个省市区的数据源。常用的数据源可以是JSON文件或者从后台API获取。这里我们以JSON文件的方式来演示。
{ "provinceList": [ { "name": "北京市", "cityList": [ { "name": "北京市", "districtList": ["东城区", "西城区", "朝阳区", "丰台区", "石景山区", "海淀区", "门头沟区", "房山区", "通州区", "顺义区", "昌平区", "大兴区", "怀柔区", "平谷区", "密云区", "延庆区"] } ] }, { "name": "上海市", "cityList": [ { "name": "上海市", "districtList": ["黄浦区", "徐汇区", "长宁区", "静安区", "普陀区", "虹口区", "杨浦区", "闵行区", "宝山区", "嘉定区", "浦东新区", "金山区", "松江区", "青浦区", "奉贤区", "崇明区"] } ] }, { "name": "广东省", "cityList": [ { "name": "广州市", "districtList": ["荔湾区", "越秀区", "海珠区", "天河区", "白云区", "黄埔区", "番禺区", "花都区", "南沙区", "增城区", "从化区"] }, { "name": "深圳市", "districtList": ["罗湖区", "福田区", "南山区", "宝安区", "龙岗区", "盐田区", "龙华区", "坪山区", "光明区", "大鹏新区"] } ] } ] }
<template> <view> <form> <picker mode="selector" range="{{ province }}" bind:change="onProvinceChange"> <view class="picker"> {{ province[index1] }} <text class="iconfont icon-down"></text> </view> </picker> <picker mode="selector" range="{{ city }}" bind:change="onCityChange"> <view class="picker"> {{ city[index2] }} <text class="iconfont icon-down"></text> </view> </picker> <picker mode="selector" range="{{ district }}" bind:change="onDistrictChange"> <view class="picker"> {{ district[index3] }} <text class="iconfont icon-down"></text> </view> </picker> </form> </view> </template>
<script> export default { data() { return { province: [], city: [], district: [], index1: 0, index2: 0, index3: 0 } }, methods: { onProvinceChange(e) { const index = e.detail.value; this.setData({ province: this.data.provinceList.map(item => item.name), city: this.data.provinceList[index].cityList.map(item => item.name), district: this.data.provinceList[index].cityList[0].districtList, index1: index, index2: 0, index3: 0 }); }, onCityChange(e) { const index = e.detail.value; this.setData({ district: this.data.provinceList[this.data.index1].cityList[index].districtList, index2: index, index3: 0 }); }, onDistrictChange(e) { const index = e.detail.value; this.setData({ index3: index }); } }, created() { wx.request({ url: '/data.json', success: res => { const { provinceList } = res.data; this.setData({ province: provinceList.map(item => item.name), city: provinceList[0].cityList.map(item => item.name), district: provinceList[0].cityList[0].districtList }); } }); } } </script>
以上就是通过uni-app如何实现省市区选择功能的示例代码。通过使用uni-app的picker选择器组件,我们可以根据选择的省份动态更新市和区的选项。在页面的JS文件中通过wx.request来请求获取数据源,然后根据选择的省份动态更新市和区的选项。
希望这个示例能帮助你在uni-app中实现省市区选择的功能。当然,实际开发中可能还需要根据自己的需求进行更改和优化,希望本文能给你提供一些思路和帮助。
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