實現搜索城市功能

參考 微信小程序 之『仿美團城市選擇 城市切換』
https://github.com/cinoliu/-selectCity

js文件

// pages/address/address.jsvar app = getApp()Page({ data: {  searchLetter: [],  showLetter: "",  winHeight: 0,  cityList: [],  isShowLetter: false,  scrollTop: 0,//置頂高度  scrollTopId: '',//置頂id  city: "",  cityList_search:[],  address_show:false,  search_city:[],  is_data:true,  empty:'', }, onLoad: function (options) {  console.log(options.currentcity)    // 生命周期函數--監聽頁面加載  let that = this;  that.setData({   city: options.currentcity  })  var searchLetter = ["A", "B", "C", "D", "E", "F", "G", "H", "J", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "W", "X", "Y", "Z"];  new Promise(function (resolve) {   that.getCity(function (data) {    console.log(data)    let cityObj = data.cityList;    var tempObj = [];    for (var i = 0; i < searchLetter.length; i++) {     var initial = searchLetter[i];     var cityInfo = [];     var tempArr = {};     tempArr.initial = initial;     for (var j = 0; j < cityObj.length; j++) {      if (initial == cityObj[j].initial) {       cityInfo.push(cityObj[j]);      }     }     tempArr.cityInfo = cityInfo;     tempObj.push(tempArr);    }    console.log(tempObj)    that.setData({     cityList: tempObj    })    resolve(tempObj);    })     }).then(function(res){   console.log(res)   let cityObj = [];   var sysInfo = wx.getSystemInfoSync();   var winHeight = sysInfo.windowHeight;   var itemH = winHeight / searchLetter.length;   var tempObj = [];   for (var i = 0; i < searchLetter.length; i++) {    var temp = {};    temp.name = searchLetter[i];    temp.tHeight = i * itemH;    temp.bHeight = (i + 1) * itemH;    tempObj.push(temp)   }   that.setData({    winHeight: winHeight,    itemH: itemH,    searchLetter: tempObj,   })    }) }, getCity: function (callBack){  let that = this;  app.commonRequest('wxapp/public/getCityList', 'POST', {}, function (data) {    console.log(data);     if (data.status == '200') {      that.setData({       cityList: data.datainfo.list,       // city: data.datainfo.getcode,           })      callBack({       cityList: data.datainfo.list      })     } else {      callBack({       cityList: data.datainfo.list      })     }  }) }, set_current_city:function(set_city,callBack){  let that = this;  app.commonRequest('wxapp/public/getCityList', 'POST', {   area_name: set_city,   cityCheckType:1,  }, function (data) {   console.log(data)   if (data.status == "200") {    callBack({     data: data    })   }else {    callBack({     data: data    })   }  })   }, search_city:function(e){  let that =this;  that.setData({   address_show:true  }) }, cancel_city:function(e){  let that = this;  that.setData({   search_city:[],   address_show: false,   empty:'',  }) }, seacrch_city:function(e){  let that =this;  let search_val = e.detail.value;  console.log(search_val);  app.commonRequest('wxapp/public/getCityList', 'POST', {   area_name: search_val  }, function (data) {   console.log(data)   if(data.status == "200"){    if (data.datainfo.list.length >0){     that.setData({      search_city: data.datainfo.list,      is_data: true     })    }    else{     that.setData({      search_city: data.datainfo.list,      is_data:false     })    }   }     })     }, clickLetter: function (e) {  console.log(e.currentTarget.dataset.letter)  var showLetter = e.currentTarget.dataset.letter;  this.setData({   showLetter: showLetter,   isShowLetter: true,   scrollTopId: showLetter,  })  var that = this;  setTimeout(function () {   that.setData({    isShowLetter: false   })  }, 1000) }, //選擇城市 bindCity: function (e) {  let that = this;  console.log("bindCity");  that.set_current_city(e.currentTarget.dataset.city,function(data){   console.log(data)  });  wx.setStorageSync('currentcity', e.currentTarget.dataset.city)  // that.onLoad();  this.setData({   city: e.currentTarget.dataset.city,   // scrollTop: 0,   })　　// 回到首頁  wx.switchTab({   url: '/pages/index/index'   }) },})