schoolwisdoms-student-mp/pages/Components/city/city.js

// pages/Components/city/city.js
const city = require('../../../utils/city')
const app = getApp()
Component({
  attached: function() {
    // 在组件实例进入页面节点树时执行
    this.setData({
      hot: city.hotCity.hot,
      cityList:city.citys,
      city:wx.getStorageSync('wxLocalName').city
    })
  },
  /**
   * 组件的属性列表
   */
  properties: {

  },

  /**
   * 组件的初始数据
   */
  data: {
    src:"https://app.schoolwisdoms.com/static/wx/images/",
    hot:[],
    cityList:[],
    cityArr:["TOP","A","B","C","D","E","F","G","H","J","K","L","M","N","P","Q","R","S","T","W","X","Y","Z"],
    tipHide: 1,
    showTimeOut:null,
    tipText:"",
    city:''
  },

  /**
   * 组件的方法列表
   */
  methods: {
    changeTitle:function(e){
      var idName = e.target.dataset.id
      clearTimeout(this.data.showTimeOut)
      this.setData({
        tipHide: 0,
        tipText: idName
      })
      this.data.showTimeOut = setTimeout(() => {
        this.setData({
          tipHide: 1,
        })
      }, 800);
      
     if(idName != "TOP"){
      var me = this;
      var query = wx.createSelectorQuery().in(me);
      query.selectViewport().scrollOffset()
      query.select("#"+idName).boundingClientRect();
      query.exec(function (res) {
        var miss = res[0].scrollTop + res[1].top - 93;
        wx.pageScrollTo({
          scrollTop: miss,
          duration: 0
        });
      });
     } else{
      wx.pageScrollTo({
        scrollTop: 0,
        duration: 0
      });
     }
    },

    getCity:function(e){
      var json = wx.getStorageSync('wxLocalName')
      json.city = e.currentTarget.dataset.name + "市"
      wx.setStorageSync('wxLocalName', json)
      wx.navigateBack({
        delta: 0,
      })
    }
  },

 
})