Es kann losgehen!

Bevor Sie mit der Entwicklung beginnen, lesen Sie bitte unsere Entwicklerdokumentation.

Die Google Maps JavaScript API aktivieren

Zum Einstieg führen wir Sie durch die Google Developers Console, wo Sie vorab Folgendes tun müssen:

  1. Ein Projekt erstellen oder auswählen
  2. Die Google Maps JavaScript API und zugehörige Dienste aktivieren
  3. Zugehörige Schlüssel erstellen
Weiter

containsLocation()

This example draws a green circle when the clicked point falls outside of the specified polygon (the Bermuda Triangle), and a red circle when the click falls inside the polygon.

Read the documentation or view this example full screen.

// This example requires the Geometry library. Include the libraries=geometry
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry">

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: 24.886, lng: -70.269},
    zoom: 5,
  });

  var triangleCoords = [
    {lat: 25.774, lng: -80.19},
    {lat: 18.466, lng: -66.118},
    {lat: 32.321, lng: -64.757}
  ];

  var bermudaTriangle = new google.maps.Polygon({paths: triangleCoords});

  google.maps.event.addListener(map, 'click', function(e) {
    var resultColor =
        google.maps.geometry.poly.containsLocation(e.latLng, bermudaTriangle) ?
        'red' :
        'green';

    new google.maps.Marker({
      position: e.latLng,
      map: map,
      icon: {
        path: google.maps.SymbolPath.CIRCLE,
        fillColor: resultColor,
        fillOpacity: .2,
        strokeColor: 'white',
        strokeWeight: .5,
        scale: 10
      }
    });
  });
}
<div id="map"></div>
/* 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;
}
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=geometry&callback=initMap"
         async defer></script>


Probieren Sie es selbst aus

Bewegen Sie die Maus oben rechts über den Codeblock, um den Code zu kopieren, oder öffnen Sie ihn in JSFiddle.

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Polygon arrays</title>
    <style>
      /* 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>
  </head>
  <body>
    <div id="map"></div>
    <script>
      // This example requires the Geometry library. Include the libraries=geometry
      // parameter when you first load the API. For example:
      // <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry">

      function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          center: {lat: 24.886, lng: -70.269},
          zoom: 5,
        });

        var triangleCoords = [
          {lat: 25.774, lng: -80.19},
          {lat: 18.466, lng: -66.118},
          {lat: 32.321, lng: -64.757}
        ];

        var bermudaTriangle = new google.maps.Polygon({paths: triangleCoords});

        google.maps.event.addListener(map, 'click', function(e) {
          var resultColor =
              google.maps.geometry.poly.containsLocation(e.latLng, bermudaTriangle) ?
              'red' :
              'green';

          new google.maps.Marker({
            position: e.latLng,
            map: map,
            icon: {
              path: google.maps.SymbolPath.CIRCLE,
              fillColor: resultColor,
              fillOpacity: .2,
              strokeColor: 'white',
              strokeWeight: .5,
              scale: 10
            }
          });
        });
      }
    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry&callback=initMap"
         async defer></script>
  </body>
</html>

Feedback geben zu...

Google Maps JavaScript API
Google Maps JavaScript API