This example demonstrates the use of the DirectionsService
object to fetch directions between different cities.
Read the documentation.
function initMap() { var directionsService = new google.maps.DirectionsService(); var directionsRenderer = new google.maps.DirectionsRenderer(); var map = new google.maps.Map(document.getElementById('map'), { zoom: 7, center: {lat: 41.85, lng: -87.65} }); directionsRenderer.setMap(map); var 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: 'DRIVING' }, function(response, status) { if (status === 'OK') { directionsRenderer.setDirections(response); } else { window.alert('Directions request failed due to ' + status); } }); }
<div id="floating-panel"> <b>Start: </b> <select id="start"> <option value="chicago, il">Chicago</option> <option value="st louis, mo">St Louis</option> <option value="joplin, mo">Joplin, MO</option> <option value="oklahoma city, ok">Oklahoma City</option> <option value="amarillo, tx">Amarillo</option> <option value="gallup, nm">Gallup, NM</option> <option value="flagstaff, az">Flagstaff, AZ</option> <option value="winona, az">Winona</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> <b>End: </b> <select id="end"> <option value="chicago, il">Chicago</option> <option value="st louis, mo">St Louis</option> <option value="joplin, mo">Joplin, MO</option> <option value="oklahoma city, ok">Oklahoma City</option> <option value="amarillo, tx">Amarillo</option> <option value="gallup, nm">Gallup, NM</option> <option value="flagstaff, az">Flagstaff, AZ</option> <option value="winona, az">Winona</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>
/* 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; }
<!-- 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>
Try it yourself
You can experiment with this code in JSFiddle by clicking the <>
icon in the
top-right corner of the code window.
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Directions Service</title>
<style>
/* 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>
</head>
<body>
<div id="floating-panel">
<b>Start: </b>
<select id="start">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</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>
<b>End: </b>
<select id="end">
<option value="chicago, il">Chicago</option>
<option value="st louis, mo">St Louis</option>
<option value="joplin, mo">Joplin, MO</option>
<option value="oklahoma city, ok">Oklahoma City</option>
<option value="amarillo, tx">Amarillo</option>
<option value="gallup, nm">Gallup, NM</option>
<option value="flagstaff, az">Flagstaff, AZ</option>
<option value="winona, az">Winona</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>
<script>
function initMap() {
var directionsService = new google.maps.DirectionsService();
var directionsRenderer = new google.maps.DirectionsRenderer();
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: {lat: 41.85, lng: -87.65}
});
directionsRenderer.setMap(map);
var 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: 'DRIVING'
},
function(response, status) {
if (status === 'OK') {
directionsRenderer.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
</script>
</body>
</html>