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微信小程序如何根据字母选择城市功能的实现方法介绍

时间:2020-09-05 11:30:08 作者:重庆seo小潘 来源:
这篇文章主要为大家详细介绍了微信小程序中根据字母选择城市的相关方法,具有一定的参考价值,感兴趣的小伙伴们可以参考一下 今天开发一个小程序,里面涉及到区域选择,看了网上的一些版本,感觉写的不全,有可能是我的理解能力还不够吧。今天我就结合网上的

这篇文章主要为大家详细介绍了微信小程序中根据字母选择城市的相关方法,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

今天开发一个小程序,里面涉及到区域选择,看了网上的一些版本,感觉写的不全,有可能是我的理解能力还不够吧。今天我就结合网上的答案,在根据自己的需求,重新整理一份。希望对大家有帮助。先看看截图:

微信小程序如何根据字母选择城市功能的实现方法介绍

项目截图

下面我们把代码梳理一下。

一、创建index.wxml文件

在pages->index文件夹下,新建index.wxml文件,代码如下:>二、创建对应的CSS

在pages->index文件夹下,新建index.wxss文件,代码如下:/**index.wxss**/.title {position: relative;padding: 10px 0;}.title_list {display: inline-block;padding: 0 15px;height: 20px;line-height: 20px;font-size: 16px;}.title button {width: 50px;height: 30px;font-size: 16px;padding: 0;line-height: 30px;margin: auto;position: absolute;top: 0;bottom:0;right: 10px;background: none;}.title button::after {border: none;}.title_list:nth-child(1) {border-right:1px #ccc solid;}/*城市列表*/.city_list {position: relative;}/*城市选择头部*/.list_tit {display: block;line-height: 40px;height: 40px;padding-left: 15px;font-size: 16ppx;background: #f5f5f5;color: #666;}.list_con {height: 40px;/*border-top: 1px #f5f5f5 solid ;*/line-height: 40px;font-size: 16px;padding-left: 15px;}.list_con::before {content: " ";height: 1px;border-top: 1px #f5f5f5 solid;position: absolute;width: 100%;}.list_con::before:nth-child(1) {border: none;}/*城市选择 右边*/.scroll_list {background: rgba(0,0,0,0);position: absolute;height: calc(100% - 100px);width: 25px;top: 90px;right: 10px;}.scroll_list_chi {/*border: 1px blue solid;*/text-align: center;font-size: 12px;}/*显示框*/.showwords {width: 80px;height: 80px;background: rgba(0,0,0,.3);border-radius:50%;line-height: 80px;text-align: center;font-size:10vw;margin: auto;position: absolute;top: 0;left: 0;bottom: 0;right: 0;z-index: 999;}三、创建JS文件

在pages->index文件夹下,新建index.js文件,代码如下://先引用城市数据文件var city = require('../../utils/city.js')var lineHeight = 0;var endWords = "";var isNum;Page({ data: {"hidden": true,cityName:"", //获取选中的城市名 }, onLoad: function (options) {// 生命周期函数--监听页面加载 }, onReady: function () {// 生命周期函数--监听页面初次渲染完成var cityChild = city.City[0];var that = this;wx.getSystemInfo({success: function (res) {lineHeight = (res.windowHeight - 100) / 22;console.log(res.windowHeight - 100)that.setData({city: cityChild,winHeight: res.windowHeight - 40,lineHeight: lineHeight})}}) }, onShow: function () {// 生命周期函数--监听页面显示 }, onHide: function () {// 生命周期函数--监听页面隐藏 }, onUnload: function () {// 生命周期函数--监听页面卸载 }, //触发全部开始选择 chStart: function () {this.setData({trans: ".3",hidden: false}) }, //触发结束选择 chEnd: function () {this.setData({trans: "0",hidden: true,scrollTopId: this.endWords}) }, //获取文字信息 getWords: function (e) {var id = e.target.id;this.endWords = id;isNum = id;this.setData({showwords: this.endWords}) }, //设置文字信息 setWords: function (e) {var id = e.target.id;this.setData({scrollTopId: id}) }, // 滑动选择城市 chMove: function (e) {var y = e.touches[0].clientY;var offsettop = e.currentTarget.offsetTop;var height = 0;var that = this;;var cityarr = ["A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "W", "X", "Y", "Z"]// 获取y轴最大值wx.getSystemInfo({success: function (res) {height = res.windowHeight - 10;}});//判断选择区域,只有在选择区才会生效if (y > offsettop && y < height) {// console.log((y-offsettop)/lineHeight)var num = parseInt((y - offsettop) / lineHeight);endWords = cityarr[num];// 这里 把endWords 绑定到this 上,是为了手指离开事件获取值that.endWords = endWords;};//去除重复,为了防止每次移动都赋值 ,这里限制值有变化后才会有赋值操作,//DOTO 这里暂时还有问题,还是比较卡,待优化if (isNum != num) {// console.log(isNum);isNum = num;that.setData({showwords: that.endWords})} }, //选择城市,并让选中的值显示在文本框里 bindCity: function(e) {console.log(e);var cityName = e.currentTarget.dataset.city;this.setData({ cityName: cityName }) }})四、创建城市文件

在utils文件夹里创建city.js文件,具体代码如下:var city = { "City": [{"热门城市": [{"name": "北京","key": "热门"},{"name": "上海","key": "热门"},{"name": "广州","key": "热门"},{"name": "深圳","key": "热门"},{"name": "成都","key": "热门"},{"name": "重庆","key": "热门"},{"name": "天津","key": "热门"},{"name": "杭州","key": "热门"},{"name": "南京","key": "热门"},{"name": "苏州","key": "热门"},{"name": "武汉","key": "热门"},{"name": "西安","key": "热门"}],"A": [{"name": "阿坝","key": "A"},{"name": "阿拉善","key": "A"},{"name": "阿里","key": "A"},{"name": "安康","key": "A"},{"name": "安庆","key": "A"},{"name": "鞍山","key": "A"},{"name": "安顺","key": "A"},{"name": "安阳","key": "A"},{"name": "澳门","key": "A"}],"B": [{"name": "北京","key": "B"},{"name": "白银","key": "B"},{"name": "保定","key": "B"},{"name": "宝鸡","key": "B"},{"name": "保山","key": "B"},{"name": "包头","key": "B"},{"name": "巴中","key": "B"},{"name": "北海","key": "B"},{"name": "蚌埠","key": "B"},{"name": "本溪","key": "B"},{"name": "毕节","key": "B"},{"name": "滨州","key": "B"},{"name": "百色","key": "B"},{"name": "亳州","key": "B"}],"C": [{"name": "重庆","key": "C"},{"name": "成都","key": "C"},{"name": "长沙","key": "C"},{"name": "长春","key": "C"},{"name": "沧州","key": "C"},{"name": "常德","key": "C"},{"name": "昌都","key": "C"},{"name": "长治","key": "C"},{"name": "常州","key": "C"},{"name": "巢湖","key": "C"},{"name": "潮州","key": "C"},{"name": "承德","key": "C"},{"name": "郴州","key": "C"},{"name": "赤峰","key": "C"},{"name": "池州","key": "C"},{"name": "崇左","key": "C"},{"name": "楚雄","key": "C"},{"name": "滁州","key": "C"},{"name": "朝阳","key": "C"}],"D": [{"name": "大连","key": "D"},{"name": "东莞","key": "D"},{"name": "大理","key": "D"},{"name": "丹东","key": "D"},{"name": "大庆","key": "D"},{"name": "大同","key": "D"},{"name": "大兴安岭","key": "D"},{"name": "德宏","key": "D"},{"name": "德阳","key": "D"},{"name": "德州","key": "D"},{"name": "定西","key": "D"},{"name": "迪庆","key": "D"},{"name": "东营","key": "D"}],"E": [{"name": "鄂尔多斯","key": "E"},{"name": "恩施","key": "E"},{"name": "鄂州","key": "E"}],"F": [{"name": "福州","key": "F"},{"name": "防城港","key": "F"},{"name": "佛山","key": "F"},{"name": "抚顺","key": "F"},{"name": "抚州","key": "F"},{"name": "阜新","key": "F"},{"name": "阜阳","key": "F"}],"G": [{"name": "广州","key": "G"},{"name": "赣州","key": "G"},{"name": "桂林","key": "G"},{"name": "贵阳","key": "G"},{"name": "甘南","key": "G"},{"name": "甘孜","key": "G"},{"name": "广安","key": "G"},{"name": "广元","key": "G"},{"name": "果洛","key": "G"},{"name": "贵港","key": "G"}],"H": [{"name": "杭州","key": "H"},{"name": "哈尔滨","key": "H"},{"name": "合肥","key": "H"},{"name": "海口","key": "H"},{"name": "海东","key": "H"},{"name": "海北","key": "H"},{"name": "海南","key": "H"},{"name": "海西","key": "H"},{"name": "邯郸","key": "H"},{"name": "汉中","key": "H"},{"name": "鹤壁","key": "H"},{"name": "河池","key": "H"},{"name": "鹤岗","key": "H"},{"name": "黑河","key": "H"},{"name": "衡水","key": "H"},{"name": "衡阳","key": "H"},{"name": "河源","key": "H"},{"name": "贺州","key": "H"},{"name": "红河","key": "H"},{"name": "淮安","key": "H"},{"name": "淮北","key": "H"},{"name": "怀化","key": "H"},{"name": "淮南","key": "H"},{"name": "黄冈","key": "H"},{"name": "黄南","key": "H"},{"name": "黄山","key": "H"},{"name": "黄石","key": "H"},{"name": "惠州","key": "H"},{"name": "葫芦岛","key": "H"},{"name": "呼伦贝尔","key": "H"},{"name": "湖州","key": "H"},{"name": "菏泽","key": "H"}],"J": [{"name": "济南","key": "J"},{"name": "佳木斯","key": "J"},{"name": "吉安","key": "J"},{"name": "江门","key": "J"},{"name": "焦作","key": "J"},{"name": "嘉兴","key": "J"},{"name": "嘉峪关","key": "J"},{"name": "揭阳","key": "J"},{"name": "吉林","key": "J"},{"name": "金昌","key": "J"},{"name": "晋城","key": "J"},{"name": "景德镇","key": "J"},{"name": "荆门","key": "J"},{"name": "荆州","key": "J"},{"name": "金华","key": "J"},{"name": "济宁","key": "J"},{"name": "晋中","key": "J"},{"name": "锦州","key": "J"},{"name": "九江","key": "J"},{"name": "酒泉","key": "J"}],"K": [{"name": "昆明","key": "K"},{"name": "开封","key": "K"}],"L": [{"name": "兰州","key": "L"},{"name": "拉萨","key": "L"},{"name": "来宾","key": "L"},{"name": "莱芜","key": "L"},{"name": "廊坊","key": "L"},{"name": "乐山","key": "L"},{"name": "凉山","key": "L"},{"name": "连云港","key": "L"},{"name": "聊城","key": "L"},{"name": "辽阳","key": "L"},{"name": "辽源","key": "L"},{"name": "丽江","key": "L"},{"name": "临沧","key": "L"},{"name": "临汾","key": "L"},{"name": "临夏","key": "L"},{"name": "临沂","key": "L"},{"name": "林芝","key": "L"},{"name": "丽水","key": "L"},{"name": "六安","key": "L"},{"name": "六盘水","key": "L"},{"name": "柳州","key": "L"},{"name": "陇南","key": "L"},{"name": "龙岩","key": "L"},{"name": "娄底","key": "L"},{"name": "漯河","key": "L"},{"name": "洛阳","key": "L"},{"name": "泸州","key": "L"},{"name": "吕梁","key": "L"}],"M": [{"name": "马鞍山","key": "M"},{"name": "茂名","key": "M"},{"name": "眉山","key": "M"},{"name": "梅州","key": "M"},{"name": "绵阳","key": "M"},{"name": "牡丹江","key": "M"}],"N": [{"name": "南京","key": "N"},{"name": "南昌","key": "N"},{"name": "南宁","key": "N"},{"name": "南充","key": "N"},{"name": "南平","key": "N"},{"name": "南通","key": "N"},{"name": "南阳","key": "N"},{"name": "那曲","key": "N"},{"name": "内江","key": "N"},{"name": "宁德","key": "N"},{"name": "怒江","key": "N"}],"P": [{"name": "盘锦","key": "P"},{"name": "攀枝花","key": "P"},{"name": "平顶山","key": "P"},{"name": "平凉","key": "P"},{"name": "萍乡","key": "P"},{"name": "莆田","key": "P"},{"name": "濮阳","key": "P"}],"Q": [{"name": "青岛","key": "Q"},{"name": "黔东南","key": "Q"},{"name": "黔南","key": "Q"},{"name": "黔西南","key": "Q"},{"name": "庆阳","key": "Q"},{"name": "清远","key": "Q"},{"name": "秦皇岛","key": "Q"},{"name": "钦州","key": "Q"},{"name": "齐齐哈尔","key": "Q"},{"name": "泉州","key": "Q"},{"name": "曲靖","key": "Q"},{"name": "衢州","key": "Q"}],"R": [{"name": "日喀则","key": "R"},{"name": "日照","key": "R"}],"S": [{"name": "上海","key": "S"},{"name": "深圳","key": "S"},{"name": "苏州","key": "S"},{"name": "沈阳","key": "S"},{"name": "石家庄","key": "S"},{"name": "三门峡","key": "S"},{"name": "三明","key": "S"},{"name": "三亚","key": "S"},{"name": "商洛","key": "S"},{"name": "商丘","key": "S"},{"name": "上饶","key": "S"},{"name": "山南","key": "S"},{"name": "汕头","key": "S"},{"name": "汕尾","key": "S"},{"name": "韶关","key": "S"},{"name": "绍兴","key": "S"},{"name": "邵阳","key": "S"},{"name": "十堰","key": "S"},{"name": "朔州","key": "S"},{"name": "四平","key": "S"},{"name": "绥化","key": "S"},{"name": "遂宁","key": "S"},{"name": "随州","key": "S"},{"name": "娄底","key": "S"},{"name": "宿迁","key": "S"},{"name": "宿州","key": "S"}],"T": [{"name": "天津","key": "T"},{"name": "太原","key": "T"},{"name": "泰安","key": "T"},{"name": "泰州","key": "T"},{"name": "唐山","key": "T"},{"name": "天水","key": "T"},{"name": "铁岭","key": "T"},{"name": "铜川","key": "T"},{"name": "通化","key": "T"},{"name": "通辽","key": "T"},{"name": "铜陵","key": "T"},{"name": "铜仁","key": "T"},{"name": "台湾","key": "T"}],"W": [{"name": "武汉","key": "W"},{"name": "乌鲁木齐","key": "W"},{"name": "无锡","key": "W"},{"name": "威海","key": "W"},{"name": "潍坊","key": "W"},{"name": "文山","key": "W"},{"name": "温州","key": "W"},{"name": "乌海","key": "W"},{"name": "芜湖","key": "W"},{"name": "乌兰察布","key": "W"},{"name": "武威","key": "W"},{"name": "梧州","key": "W"}],"X": [{"name": "厦门","key": "X"},{"name": "西安","key": "X"},{"name": "西宁","key": "X"},{"name": "襄樊","key": "X"},{"name": "湘潭","key": "X"},{"name": "湘西","key": "X"},{"name": "咸宁","key": "X"},{"name": "咸阳","key": "X"},{"name": "孝感","key": "X"},{"name": "邢台","key": "X"},{"name": "新乡","key": "X"},{"name": "信阳","key": "X"},{"name": "新余","key": "X"},{"name": "忻州","key": "X"},{"name": "西双版纳","key": "X"},{"name": "宣城","key": "X"},{"name": "许昌","key": "X"},{"name": "徐州","key": "X"},{"name": "香港","key": "X"},{"name": "锡林郭勒","key": "X"},{"name": "兴安","key": "X"}],"Y": [{"name": "银川","key": "Y"},{"name": "雅安","key": "Y"},{"name": "延安","key": "Y"},{"name": "延边","key": "Y"},{"name": "盐城","key": "Y"},{"name": "阳江","key": "Y"},{"name": "阳泉","key": "Y"},{"name": "扬州","key": "Y"},{"name": "烟台","key": "Y"},{"name": "宜宾","key": "Y"},{"name": "宜昌","key": "Y"},{"name": "宜春","key": "Y"},{"name": "营口","key": "Y"},{"name": "益阳","key": "Y"},{"name": "永州","key": "Y"},{"name": "岳阳","key": "Y"},{"name": "榆林","key": "Y"},{"name": "运城","key": "Y"},{"name": "云浮","key": "Y"},{"name": "玉树","key": "Y"},{"name": "玉溪","key": "Y"},{"name": "玉林","key": "Y"}],"Z": [{"name": "杂多县","key": "Z"},{"name": "赞皇县","key": "Z"},{"name": "枣强县","key": "Z"},{"name": "枣阳市","key": "Z"},{"name": "枣庄","key": "Z"},{"name": "泽库县","key": "Z"},{"name": "增城市","key": "Z"},{"name": "曾都区","key": "Z"},{"name": "泽普县","key": "Z"},{"name": "泽州县","key": "Z"},{"name": "札达县","key": "Z"},{"name": "扎赉特旗","key": "Z"},{"name": "扎兰屯市","key": "Z"},{"name": "扎鲁特旗","key": "Z"},{"name": "扎囊县","key": "Z"},{"name": "张北县","key": "Z"},{"name": "张店区","key": "Z"},{"name": "章贡区","key": "Z"},{"name": "张家港","key": "Z"},{"name": "张家界","key": "Z"},{"name": "张家口","key": "Z"},{"name": "漳平市","key": "Z"},{"name": "漳浦县","key": "Z"},{"name": "章丘市","key": "Z"},{"name": "樟树市","key": "Z"},{"name": "张湾区","key": "Z"},{"name": "彰武县","key": "Z"},{"name": "漳县","key": "Z"},{"name": "张掖","key": "Z"},{"name": "漳州","key": "Z"},{"name": "长子县","key": "Z"},{"name": "湛河区","key": "Z"},{"name": "湛江","key": "Z"},{"name": "站前区","key": "Z"},{"name": "沾益县","key": "Z"},{"name": "诏安县","key": "Z"},{"name": "召陵区","key": "Z"},{"name": "昭平县","key": "Z"},{"name": "肇庆","key": "Z"},{"name": "昭通","key": "Z"},{"name": "赵县","key": "Z"}]} ]}module.exports = city;以上就是微信小程序如何根据字母选择城市功能的实现方法介绍的详细内容,更多请关注小潘博客其它相关文章!