dist/samples/polygon-arrays/inline.html

<!DOCTYPE html>
<html>
  <head>
    <title>Polygon Arrays</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <style type="text/css">
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }

      /* Optional: Makes the sample page fill the window. */
      html,
      body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
    </style>
    <script>
      "use strict";

      // This example creates a simple polygon representing the Bermuda Triangle.
      // When the user clicks on the polygon an info window opens, showing
      // information about the polygon's coordinates.
      let map;
      let infoWindow;

      function initMap() {
        map = new google.maps.Map(document.getElementById("map"), {
          zoom: 5,
          center: {
            lat: 24.886,
            lng: -70.268,
          },
          mapTypeId: "terrain",
        }); // Define the LatLng coordinates for the polygon.

        const triangleCoords = [
          {
            lat: 25.774,
            lng: -80.19,
          },
          {
            lat: 18.466,
            lng: -66.118,
          },
          {
            lat: 32.321,
            lng: -64.757,
          },
        ]; // Construct the polygon.

        const bermudaTriangle = new google.maps.Polygon({
          paths: triangleCoords,
          strokeColor: "#FF0000",
          strokeOpacity: 0.8,
          strokeWeight: 3,
          fillColor: "#FF0000",
          fillOpacity: 0.35,
        });
        bermudaTriangle.setMap(map); // Add a listener for the click event.

        bermudaTriangle.addListener("click", showArrays);
        infoWindow = new google.maps.InfoWindow();
      }

      function showArrays(event) {
        // Since this polygon has only one path, we can call getPath() to return the
        // MVCArray of LatLngs.
        const polygon = this;
        const vertices = polygon.getPath();
        let contentString =
          "<b>Bermuda Triangle polygon</b><br>" +
          "Clicked location: <br>" +
          event.latLng.lat() +
          "," +
          event.latLng.lng() +
          "<br>"; // Iterate over the vertices.

        for (let i = 0; i < vertices.getLength(); i++) {
          const xy = vertices.getAt(i);
          contentString +=
            "<br>" + "Coordinate " + i + ":<br>" + xy.lat() + "," + xy.lng();
        } // Replace the info window's content and position.

        infoWindow.setContent(contentString);
        infoWindow.setPosition(event.latLng);
        infoWindow.open(map);
      }
    </script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>