How To Add Markers On Top Of A Polygon Using Google Maps Javascript Api?

I'm using the Google Maps Javascript API, and I've defined a polygon and attached it to a map: const region = new google.maps.Polygon({ map: map, paths: [ { lat: 40.5577151

Solution 1:

Two options:

1. add a click listener to the polygon

google.maps.event.addListener(region, 'click', function (e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  });

proof of concept fiddle

functioninitialize() {
  var map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  const region = new google.maps.Polygon({
    map: map,
    paths: [
      { lat: 40.5577151228437, lng: -74.15980859374997 },
      { lat: 40.599436503265856, lng: -74.27516503906247 },
      { lat: 40.67030312529891, lng: -74.25319238281247 },
      { lat: 40.72548139969253, lng: -74.26079167357881 },
    ],
  });
  var bounds = new google.maps.LatLngBounds();
  for (var i = 0; i < region.getPath().getLength(); i++) {
    bounds.extend(region.getPath().getAt(i));
  }
  map.fitBounds(bounds);

  functionaddMarker(e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  }
  google.maps.event.addListener(map, 'click', addMarker);
  google.maps.event.addListener(region, 'click', addMarker);
}
google.maps.event.addDomListener(window, "load", initialize);

html,
body,
#map_canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<scriptsrc="https://maps.googleapis.com/maps/api/js"></script><divid="map_canvas"></div>

2. make the polygon not capture clicks (clickable: false);

constregion=newgoogle.maps.Polygon({map:map,clickable:false,paths: [
    { lat:40.5577151228437, long:-74.15980859374997 },
    { lat:40.599436503265856, long:-74.27516503906247 },
    { lat:40.67030312529891, long:-74.25319238281247 },
    { lat:40.72548139969253, long:-74.26079167357881 },
  ],}

proof of concept fiddle

functioninitialize() {
  var map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  const region = new google.maps.Polygon({
    map: map,
    clickable: false,
    paths: [
      { lat: 40.5577151228437, lng: -74.15980859374997 },
      { lat: 40.599436503265856, lng: -74.27516503906247 },
      { lat: 40.67030312529891, lng: -74.25319238281247 },
      { lat: 40.72548139969253, lng: -74.26079167357881 },
    ],
  });
  var bounds = new google.maps.LatLngBounds();
  for (var i = 0; i < region.getPath().getLength(); i++) {
    bounds.extend(region.getPath().getAt(i));
  }
  map.fitBounds(bounds);
  google.maps.event.addListener(map, 'click', function(e) {
    const marker = new google.maps.Marker({
      map: map,
      position: e.latLng,
    });
  });
}
google.maps.event.addDomListener(window, "load", initialize);

html,
body,
#map_canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<scriptsrc="https://maps.googleapis.com/maps/api/js"></script><divid="map_canvas"></div>