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Aktifkan Google Maps JavaScript API

Untuk membantu Anda memulai, kami akan memandu Anda melalui Google Developers Console untuk melakukan beberapa hal terlebih dahulu:

  1. Buat atau pilih sebuah proyek
  2. Aktifkan Google Maps JavaScript API dan layanan terkait
  3. Buat kunci yang sesuai
Lanjutkan

Encoding methods

This example demonstrates path encoding using the Geometry library. Click the map to create a polyline. The encoding of this polyline then appears in the text box.

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'), {
    zoom: 14,
    center: {lat: 34.366, lng: -89.519}
  });
  var poly = new google.maps.Polyline({
    strokeColor: '#000000',
    strokeOpacity: 1,
    strokeWeight: 3,
    map: map
  });

  // Add a listener for the click event
  google.maps.event.addListener(map, 'click', function(event) {
    addLatLngToPoly(event.latLng, poly);
  });
}

/**
 * Handles click events on a map, and adds a new point to the Polyline.
 * Updates the encoding text area with the path's encoded values.
 */
function addLatLngToPoly(latLng, poly) {
  var path = poly.getPath();
  // Because path is an MVCArray, we can simply append a new coordinate
  // and it will automatically appear
  path.push(latLng);

  // Update the text field to display the polyline encodings
  var encodeString = google.maps.geometry.encoding.encodePath(path);
  if (encodeString) {
    document.getElementById('encoded-polyline').value = encodeString;
  }
}
<div id="map"></div>
<div id="right-panel">
  <div>Encoding:</div>
  <textarea id="encoded-polyline"></textarea>
</div>
#right-panel {
  font-family: 'Roboto','sans-serif';
  line-height: 30px;
  padding-left: 10px;
}

#right-panel select, #right-panel input {
  font-size: 15px;
}

#right-panel select {
  width: 100%;
}

#right-panel i {
  font-size: 12px;
}
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map {
  height: 100%;
  width: 50%;
  float: left;
}
#right-panel {
  width: 46%;
  float: left;
}
#encoded-polyline {
  height: 100px;
  width: 100%;
}
<!-- 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>

Cobalah sendiri

Arahkan ke atas kanan blok kode untuk menyalin kode atau membukanya dalam JSFiddle.

<!DOCTYPE html>
<html>
  <head>
    <title>Encoding methods</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      #right-panel {
        font-family: 'Roboto','sans-serif';
        line-height: 30px;
        padding-left: 10px;
      }

      #right-panel select, #right-panel input {
        font-size: 15px;
      }

      #right-panel select {
        width: 100%;
      }

      #right-panel i {
        font-size: 12px;
      }
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #map {
        height: 100%;
        width: 50%;
        float: left;
      }
      #right-panel {
        width: 46%;
        float: left;
      }
      #encoded-polyline {
        height: 100px;
        width: 100%;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <div id="right-panel">
      <div>Encoding:</div>
      <textarea id="encoded-polyline"></textarea>
    </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'), {
          zoom: 14,
          center: {lat: 34.366, lng: -89.519}
        });
        var poly = new google.maps.Polyline({
          strokeColor: '#000000',
          strokeOpacity: 1,
          strokeWeight: 3,
          map: map
        });

        // Add a listener for the click event
        google.maps.event.addListener(map, 'click', function(event) {
          addLatLngToPoly(event.latLng, poly);
        });
      }

      /**
       * Handles click events on a map, and adds a new point to the Polyline.
       * Updates the encoding text area with the path's encoded values.
       */
      function addLatLngToPoly(latLng, poly) {
        var path = poly.getPath();
        // Because path is an MVCArray, we can simply append a new coordinate
        // and it will automatically appear
        path.push(latLng);

        // Update the text field to display the polyline encodings
        var encodeString = google.maps.geometry.encoding.encodePath(path);
        if (encodeString) {
          document.getElementById('encoded-polyline').value = encodeString;
        }
      }
    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=geometry&callback=initMap"
        async defer></script>
  </body>
</html>

Kirim masukan tentang...

Google Maps JavaScript API
Google Maps JavaScript API
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