How to implement navigation function in WeChat Mini Program

let plugin = requirePlugin('routePlan');
let key = ''; //Use the key applied for in Tencent location service
let referer = ''; //The name of the app that calls the plugin let endPoint = JSON.stringify({ //End point 'name': 'Yoshinoya (Beijing West Railway Station North Exit)',
 'latitude': 39.89631551,
 'longitude': 116.323459711
});
wx.navigateTo({
 url: 'plugin://routePlan/index?key=' + key + '&referer=' + referer + '&endPoint=' + endPoint
});

//wxml
<button type="default" bindtap="openMap">Open map</button>

//js
Page({
 data: {

 },
 openMap: function () {
 wx.getLocation({
  type: 'gcj02', // default is wgs84 returns gps coordinates, gcj02 returns coordinates that can be used for wx.openLocation success: function (res) {
  // success
  console.log(res.latitude);
  console.log(res.longitude);
  wx.openLocation({
   latitude: res.latitude, // Latitude, range is -90~90, negative number indicates south latitude longitude: res.longitude, // Longitude, range is -180~180, negative number indicates west longitude scale: 28, // Scaling ratio name:"Name of the place to be found (such and such restaurant)",
   address: "Address: Detailed description of the place to go"
  })
  }
 })
 }
})