Arrow Symbols (Polyline)

This example adds a predefined symbol (an arrow) to a polyline.

Read the documentation.

TypeScript

// 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(): void {
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 6,
      center: { lat: 20.291, lng: 153.027 },
      mapTypeId: "terrain",
    }
  );

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

  // Create the polyline and add the symbol via the 'icons' property.
  const 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

// 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() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 6,
    center: { lat: 20.291, lng: 153.027 },
    mapTypeId: "terrain",
  });
  // Define a symbol using a predefined path (an arrow)
  // supplied by the Google Maps JavaScript API.
  const lineSymbol = {
    path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
  };
  // Create the polyline and add the symbol via the 'icons' property.
  const 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,
  });
}

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;
}

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Arrow Symbols (Polyline)</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>
    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script src="./index.js"></script>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>

All

<!DOCTYPE html>
<html>
  <head>
    <title>Arrow Symbols (Polyline)</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>
      // 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() {
        const map = new google.maps.Map(document.getElementById("map"), {
          zoom: 6,
          center: { lat: 20.291, lng: 153.027 },
          mapTypeId: "terrain",
        });
        // Define a symbol using a predefined path (an arrow)
        // supplied by the Google Maps JavaScript API.
        const lineSymbol = {
          path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
        };
        // Create the polyline and add the symbol via the 'icons' property.
        const 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>
  </head>
  <body>
    <div id="map"></div>
  </body>
</html>
// 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() { const map = new google.maps.Map(document.getElementById("map"), { zoom: 6, center: { lat: 20.291, lng: 153.027 }, mapTypeId: "terrain", }); // Define a symbol using a predefined path (an arrow) // supplied by the Google Maps JavaScript API. const lineSymbol = { path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW, }; // Create the polyline and add the symbol via the 'icons' property. const 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, }); }
/* 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; }
<!DOCTYPE html> <html> <head> <title>Arrow Symbols (Polyline)</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE&callback=initMap&libraries=&v=weekly" defer ></script> <!-- jsFiddle will insert css and js --> </head> <body> <div id="map"></div> </body> </html>

Create a starter application from sample

A skeleton starter application using TypeScript, Webpack, and Babel can be generated from this sample using one of the methods below.

Run Locally

Node.js is required to run this sample locally. Follow these instructions to install Node.js and NPM.

npx @googlemaps/js-samples init overlay-symbol-arrow DESTINATION_FOLDER

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