微信小程序实现自动定位功能

// 引入SDK核心类var QQMapWX = require('../../libs/qqmap-wx-jssdk.js');var qqmap = new QQMapWX({//在腾讯地图开放平台申请密钥 http://lbs.qq.com/mykey.html key: 'your KEY'});Page({ data: { myLatitude: "", myLongitude: "", myAddress: "" }, onLoad: function(){ var that = this //用微信提供的api获取经纬度 wx.getLocation({  type: 'wgs84',  success: function(res){  that.setData({myLatitude: res.latitude, myLongitude: res.longitude})  //用腾讯地图的api，根据经纬度获取城市  qqmap.reverseGeocoder({   location: {   latitude: that.data.myLatitude,   longitude: that.data.myLongitude   },   success: function (res) {   console.log(res)   var a = res.result.address_component   //获取市和区（区可能为空）   that.setData({myAddress: a.city + a.district})   //控制台输出结果   console.log(that.data.myAddress)   }  })  } }) } })