You're all set!

To start developing, please head over to our developer documentation.

Activate the Google Maps JavaScript API

To get you started we'll guide you through the Google Developers Console to do a few things first:

  1. Create or choose a project
  2. Activate the Google Maps JavaScript API and related services
  3. Create appropriate keys
Continue

Arrows (Symbols)

Read the documentation or view this example full screen.

// This example adds a predefined symbol (an arrow) to a polyline.
// Setting offset to 100% places the arrow at the end of the line.

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 6,
    center: {lat: 20.291, lng: 153.027},
    mapTypeId: google.maps.MapTypeId.TERRAIN
  });

  // Define a symbol using a predefined path (an arrow)
  // supplied by the Google Maps JavaScript API.
  var lineSymbol = {
    path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW
  };

  // Create the polyline and add the symbol via the 'icons' property.
  var line = new google.maps.Polyline({
    path: [{lat: 22.291, lng: 153.027}, {lat: 18.291, lng: 153.027}],
    icons: [{
      icon: lineSymbol,
      offset: '100%'
    }],
    map: map
  });
}
<div id="map"></div>
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map {
  height: 100%;
}
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap">
</script>
JavaScript
// This example adds a predefined symbol (an arrow) to a polyline.
// Setting offset to 100% places the arrow at the end of the line.

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 6,
    center: {lat: 20.291, lng: 153.027},
    mapTypeId: google.maps.MapTypeId.TERRAIN
  });

  // Define a symbol using a predefined path (an arrow)
  // supplied by the Google Maps JavaScript API.
  var lineSymbol = {
    path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW
  };

  // Create the polyline and add the symbol via the 'icons' property.
  var line = new google.maps.Polyline({
    path: [{lat: 22.291, lng: 153.027}, {lat: 18.291, lng: 153.027}],
    icons: [{
      icon: lineSymbol,
      offset: '100%'
    }],
    map: map
  });
}
JavaScript + HTML
<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Arrows (Symbols)</title>
    <style>
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #map {
        height: 100%;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      // This example adds a predefined symbol (an arrow) to a polyline.
      // Setting offset to 100% places the arrow at the end of the line.

      function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 6,
          center: {lat: 20.291, lng: 153.027},
          mapTypeId: google.maps.MapTypeId.TERRAIN
        });

        // Define a symbol using a predefined path (an arrow)
        // supplied by the Google Maps JavaScript API.
        var lineSymbol = {
          path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW
        };

        // Create the polyline and add the symbol via the 'icons' property.
        var line = new google.maps.Polyline({
          path: [{lat: 22.291, lng: 153.027}, {lat: 18.291, lng: 153.027}],
          icons: [{
            icon: lineSymbol,
            offset: '100%'
          }],
          map: map
        });
      }
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
    </script>
  </body>
</html>

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Google Maps JavaScript API
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