Travel Modes in Directions

This example demonstrates the use of the DirectionsService object to fetch directions for different travel modes.

Read the documentation.

TypeScript

function initMap(): void {
  const directionsRenderer = new google.maps.DirectionsRenderer();
  const directionsService = new google.maps.DirectionsService();
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 14,
      center: { lat: 37.77, lng: -122.447 },
    }
  );

  directionsRenderer.setMap(map);

  calculateAndDisplayRoute(directionsService, directionsRenderer);
  (document.getElementById("mode") as HTMLInputElement).addEventListener(
    "change",
    () => {
      calculateAndDisplayRoute(directionsService, directionsRenderer);
    }
  );
}

function calculateAndDisplayRoute(
  directionsService: google.maps.DirectionsService,
  directionsRenderer: google.maps.DirectionsRenderer
) {
  const selectedMode = (document.getElementById("mode") as HTMLInputElement)
    .value;

  directionsService
    .route({
      origin: { lat: 37.77, lng: -122.447 }, // Haight.
      destination: { lat: 37.768, lng: -122.511 }, // Ocean Beach.
      // Note that Javascript allows us to access the constant
      // using square brackets and a string value as its
      // "property."
      travelMode: google.maps.TravelMode[selectedMode],
    })
    .then((response) => {
      directionsRenderer.setDirections(response);
    })
    .catch((e) => window.alert("Directions request failed due to " + status));
}

declare global {
  interface Window {
    initMap: () => void;
  }
}
window.initMap = initMap;
index.ts

JavaScript

function initMap() {
  const directionsRenderer = new google.maps.DirectionsRenderer();
  const directionsService = new google.maps.DirectionsService();
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 14,
    center: { lat: 37.77, lng: -122.447 },
  });

  directionsRenderer.setMap(map);
  calculateAndDisplayRoute(directionsService, directionsRenderer);
  document.getElementById("mode").addEventListener("change", () => {
    calculateAndDisplayRoute(directionsService, directionsRenderer);
  });
}

function calculateAndDisplayRoute(directionsService, directionsRenderer) {
  const selectedMode = document.getElementById("mode").value;

  directionsService
    .route({
      origin: { lat: 37.77, lng: -122.447 }, // Haight.
      destination: { lat: 37.768, lng: -122.511 }, // Ocean Beach.
      // Note that Javascript allows us to access the constant
      // using square brackets and a string value as its
      // "property."
      travelMode: google.maps.TravelMode[selectedMode],
    })
    .then((response) => {
      directionsRenderer.setDirections(response);
    })
    .catch((e) => window.alert("Directions request failed due to " + status));
}

window.initMap = initMap;
index.js

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;
}

#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: "Roboto", "sans-serif";
  line-height: 30px;
  padding-left: 10px;
}

style.css

HTML

<html>
  <head>
    <title>Travel Modes in Directions</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="floating-panel">
      <b>Mode of Travel: </b>
      <select id="mode">
        <option value="DRIVING">Driving</option>
        <option value="WALKING">Walking</option>
        <option value="BICYCLING">Bicycling</option>
        <option value="TRANSIT">Transit</option>
      </select>
    </div>
    <div id="map"></div>

    <!-- 
      The `defer` attribute causes the script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises. See
      https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
      defer
    ></script>
  </body>
</html>
index.html

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. 

  git clone -b sample-directions-travel-modes https://github.com/googlemaps/js-samples.git
  cd js-samples
  npm i
  npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME. 

  git checkout sample-SAMPLE_NAME
  npm i
  npm start