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javascriptgoogle-mapsgoogle-maps-api-3google-street-view

create event listener to dynamically created google-map marker


I am trying to create a page that I am going to integrate with excel with vba. . I want to add event Listener to marker when it is clicked. I can barely manage to create a "click listener" to single marker ,but I couldn't do it to multiple markers that are created dynamically using a loop.

When the marker is clicked, I want the street view to update to the new clicked marker's position.

I really appreciate any suggestion. Thank you.

This is what I have(from here and there).

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Simple markers</title>
    <style>
      html, body, #map-canvas {
        height: 100%;
        margin: 0;
        padding: 0;
      }

    </style>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp"></script>
    <script>


var labels = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; //me
var labelIndex = 0;                        //me
var map;
var panorama;

//this will be created from server side

    var markers = [
  { lat: 39.976784, lng: -75.234347, name: "marker 1" },
  { lat: 39.977043, lng: -75.235087, name: "marker 2" },
  { lat: 39.976097, lng: -75.234508, name: "marker 3" },
  { lat: 39.977059, lng: -75.233682, name: "marker 4" }
];
var myLatlng = new google.maps.LatLng(markers[0].lat,markers[0].lng);


function initialize() {
//var sv = new google.maps.StreetViewService();
panorama = new google.maps.StreetViewPanorama(document.getElementById('pano'));  


var mapOptions = {
  zoom: 16,
  center: myLatlng
 }
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
var panoramaOptions = {

    navigationControl: true,
    position: myLatlng,
    //pov: {
    //heading: 34,
    //pitch: 10
    //}
};
// Set the initial Street View camera to the center of the map
new google.maps.StreetViewPanorama(document.getElementById('pano'),       
panoramaOptions);

//this is the loop that will creat the marker
for (index in markers) addMarker(markers[index]);
function addMarker(data) {
  // Create the marker
  var marker = new google.maps.Marker({
    position: new google.maps.LatLng(data.lat, data.lng),
    map: map,
    label: labels[labelIndex++ % labels.length],
    title: data.name
  });

}

}

google.maps.event.addDomListener(window, 'load', initialize);

</script>
</head>
<body>
<div id="map-excel" style="width: 60%; height: 100%;float:left"></div>
<div id="pano" style="width: 40%; height: 50%;float:right"></div>
<div id="map-canvas" style="width: 40%; height: 50%;float:right"></div>

</body>
</html>

Solution

    1. keep a reference to the panorama:
    // Set the initial Street View camera to the center of the map
    new google.maps.StreetViewPanorama(document.getElementById('pano'), panoramaOptions);
    

    should be:

    // Set the initial Street View camera to the center of the map
    panorama = new google.maps.StreetViewPanorama(document.getElementById('pano'), panoramaOptions);
    
    1. Change the location of the panorama in the marker click listener.
    google.maps.event.addListener(marker,'click', function(e) {
       pano.setPosition(marker.getPosition());
    });
    

    proof of concept fiddle

    code snippet:

    var labels = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; //me
    var labelIndex = 0; //me
    var map;
    var panorama;
    
    //this will be created from server side
    
    var markers = [{
      lat: 39.976784,
      lng: -75.234347,
      name: "marker 1"
    }, {
      lat: 39.977043,
      lng: -75.235087,
      name: "marker 2"
    }, {
      lat: 39.976097,
      lng: -75.234508,
      name: "marker 3"
    }, {
      lat: 39.977059,
      lng: -75.233682,
      name: "marker 4"
    }];
    var myLatlng = new google.maps.LatLng(markers[0].lat, markers[0].lng);
    
    
    function initialize() {
      //var sv = new google.maps.StreetViewService();
      panorama = new google.maps.StreetViewPanorama(document.getElementById('pano'));
    
    
      var mapOptions = {
        zoom: 16,
        center: myLatlng
      }
      map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
      var panoramaOptions = {
    
        navigationControl: true,
        position: myLatlng,
        //pov: {
        //heading: 34,
        //pitch: 10
        //}
      };
      // Set the initial Street View camera to the center of the map
      pano = new google.maps.StreetViewPanorama(document.getElementById('pano'),
        panoramaOptions);
    
      //this is the loop that will creat the marker
      for (var index in markers) addMarker(markers[index]);
    
      function addMarker(data) {
        // Create the marker
        var marker = new google.maps.Marker({
          position: new google.maps.LatLng(data.lat, data.lng),
          map: map,
          label: labels[labelIndex++ % labels.length],
          title: data.name
        });
        google.maps.event.addListener(marker, 'click', function(e) {
          pano.setPosition(marker.getPosition());
        });
      }
    
    }
    
    google.maps.event.addDomListener(window, 'load', initialize);
    html,
    body,
    #map-canvas {
      height: 100%;
      margin: 0;
      padding: 0;
    }
    <script src="https://maps.googleapis.com/maps/api/js"></script>
    <div id="map-excel" style="width: 60%; height: 100%;float:left"></div>
    <div id="pano" style="width: 40%; height: 50%;float:right"></div>
    <div id="map-canvas" style="width: 40%; height: 50%;float:right"></div>