谷歌地图-如何获取路线地址

Question

当我单击按钮时，将显示路线。而且我还希望将路线的地址显示在div上。

路线确定，但地址尚未解决。地址无法自动显示。

我认为问题出在地理编码器上。

<script src="//code.jquery.com/jquery-2.1.1.min.js"></script>
<script>
$(document).ready(function(){
$('#first').click(function(){
   initMap(0,2);
    });
 });
$(document).ready(function(){
$('#second').click(function(){
   initMap(0,4);
    });
  });
</script>
<script>
  var map;
  var directionsDisplay;
  var directionsService;        
  var locations = [
    [25.1348161076504,121.67990112304688],
    [25.102487193702274,121.357177734375],
    [25.019138692693637,121.18826293945312],
    [24.84135795428775, 121.07004752388548],
    [24.706692402319927,120.99314322701048],
    [24.640730624546876,120.93036230807502],
    [24.548110180862288,120.90421412458]
  ];

  function initMap(a,b) {
    directionsDisplay=new google.maps.DirectionsRenderer();
    directionsService=new google.maps.DirectionsService();    
      var map = new google.maps.Map(document.getElementById('map'), {
        center:{lat:24,lng:121},
        zoom: 8
        });
    directionsDisplay.setMap(map);
    var infowindow=new google.maps.InfoWindow();
    var marker,i;
    var request={
      travelMode:'DRIVING'
      };
    var labels='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    for(i=a;i<b;i++){
      marker=new google.maps.Marker({
        position:{
        lat : parseFloat(locations[i][0]),
        lng : parseFloat(locations[i][1])
      },label:labels[i%labels.length]
      ,map:map
    });
    google.maps.event.addListener(marker,'click',(function(marker,i){

    })(marker,i));
    if (i == a) {
      request.origin = marker.getPosition();
      marker.setVisible(false);
    } else if (i == b-1) {
      request.destination = marker.getPosition(); 
      marker.setVisible(false); 
    } else {
      if (!request.waypoints) request.waypoints = [];
      request.waypoints.push({
        location: marker.getPosition(),
        stopover: true, 
      });marker.setVisible(false);
    }
  }
  directionsService.route(request, function(result,status){
    if(status==='OK'){
      directionsDisplay.setDirections(result);
    }
  });
  for(var y = a; y < b; y++){
    var geocoder = new google.maps.Geocoder();
    var coord = new google.maps.LatLng(locations[y][0],locations[y][1]);
  geocoder.geocode({'latLng':coord},function(results, status){
    if(status==='OK'){
      if(results){
        document.getElementById("address").innerHTML+=results[0].formatted_address; 
        }
      }
    });
  }
}

我试图将地址放入数组中，只是可以像

那样写出数组的值

var array1=[];
var array2=[];
array1.push(results[0].formatted_address);
array2=array1[0]+array1[1]+array[2]+...;
document.getElementById("address").innerHTML=array2;