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)
   }
  })
  }
 })
 } 
})