Directions Service

This example demonstrates the use of the DirectionsService object to fetch directions between different cities.

Read the documentation.

TypeScript

function initMap(): void {
  const directionsService = new google.maps.DirectionsService();
  const directionsRenderer = new google.maps.DirectionsRenderer();
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 7,
      center: { lat: 41.85, lng: -87.65 },
    }
  );

  directionsRenderer.setMap(map);

  const onChangeHandler = function () {
    calculateAndDisplayRoute(directionsService, directionsRenderer);
  };

  (document.getElementById("start") as HTMLElement).addEventListener(
    "change",
    onChangeHandler
  );
  (document.getElementById("end") as HTMLElement).addEventListener(
    "change",
    onChangeHandler
  );
}

function calculateAndDisplayRoute(
  directionsService: google.maps.DirectionsService,
  directionsRenderer: google.maps.DirectionsRenderer
) {
  directionsService
    .route({
      origin: {
        query: (document.getElementById("start") as HTMLInputElement).value,
      },
      destination: {
        query: (document.getElementById("end") as HTMLInputElement).value,
      },
      travelMode: google.maps.TravelMode.DRIVING,
    })
    .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 directionsService = new google.maps.DirectionsService();
  const directionsRenderer = new google.maps.DirectionsRenderer();
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 7,
    center: { lat: 41.85, lng: -87.65 },
  });

  directionsRenderer.setMap(map);

  const onChangeHandler = function () {
    calculateAndDisplayRoute(directionsService, directionsRenderer);
  };

  document.getElementById("start").addEventListener("change", onChangeHandler);
  document.getElementById("end").addEventListener("change", onChangeHandler);
}

function calculateAndDisplayRoute(directionsService, directionsRenderer) {
  directionsService
    .route({
      origin: {
        query: document.getElementById("start").value,
      },
      destination: {
        query: document.getElementById("end").value,
      },
      travelMode: google.maps.TravelMode.DRIVING,
    })
    .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;
  pa
dding-lef
t: 10px;
}
style.css

HTML

<html>
  <head>
    <title>Directions Service</title>

    <link rel="stylesheet" type="text/css" >href=<"./style.css" /
    script ><type=&q>uot<;modu>le&<quot>; src<="./index.js">/script<
>  /head<
 > body
 <   div id="f>loating-p<anel"
      bStart: />b
     < select> id="<;start"
        option> value=&<quot;ch>icago, il<"Chicago/option
    >    option< value=>"st <louis, mo"St Louis/option
 >       option< value=>"jop<lin, mo"Joplin, MO/opt>ion
    <    opt>ion value<="oklahoma city, ok&>quot;Oklah<oma Cit>y/option
<        option value="a>marillo, tx&q<uot;Ama>rillo/opt<ion
        option value=>"<gallup,> nm"<Gallup, NM/option
        >option <value=&>quot;flag<staff, az"Flagstaff, >AZ/opti<on
    >    optio<n value="winona, az"Win>ona/option
   <     op>tion valu<e="kingman, az"Kingm>an/option
 <       >option <value=&>quot;ba<r>stow,< c>a"<Barstow/option
>        o<ption value="san bern>ardino,< ca&quo>t;San Ber<nardino/option
        opti>on value<=">los angel<es, ca"Los Angeles/o>ption
    <  /sele>ct
      <bEnd: /b
      select id="e>nd"
    <    opt>ion value<="chicago, il"Chi>cago/opt<ion
   >     opti<on value="st louis, >mo"St< Louis/>option
  <      option value="jop>lin, mo"<Joplin,> MO/optio<n
        option value=&q>uot;ok<lahoma >city, ok&<quot;Oklahoma City/option
>       < option> value=&q<uot;amarillo, tx"Amar>illo/op<tion
  >      opt<ion value="gallup, nm"G>allup, NM/opti<on
    >    optio<n value="flagstaff, az&qu>ot;Flagstaf<f, AZ/o>ption
 <       >optio<n va>lue=&<quot;winona,>< az&>quot;W<inona/option
        option value="kingman, az"Kingman/option
        option value="barstow, ca"Barstow/option
        option value="san bernardino, ca"San Bernardino/option
        option value="los angeles, ca"Los Angeles/option
      /select
    /div
    div id="map"/div

    !-- 
      The `defer` attribute cau>ses t<he script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoid&ing race conditi&ons,
      and consistent ><behavio>r a<cross> <brows>
ers, consi
der 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=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGgcallback=initMapv=weekly"
      defer
    /script
  /body
/htmlindex.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-simple 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