TypeScript
function initMap(): void {
const bounds = new google.maps.LatLngBounds();
const markersArray: google.maps.Marker[] = [];
const map = new google.maps.Map(
document.getElementById("map") as HTMLElement,
{
center: { lat: 55.53, lng: 9.4 },
zoom: 10,
}
);
// initialize services
const geocoder = new google.maps.Geocoder();
const service = new google.maps.DistanceMatrixService();
// build request
const origin1 = { lat: 55.93, lng: -3.118 };
const origin2 = "Greenwich, England";
const destinationA = "Stockholm, Sweden";
const destinationB = { lat: 50.087, lng: 14.421 };
const request = {
origins: [origin1, origin2],
destinations: [destinationA, destinationB],
travelMode: google.maps.TravelMode.DRIVING,
unitSystem: google.maps.UnitSystem.METRIC,
avoidHighways: false,
avoidTolls: false,
};
// put request on page
(document.getElementById("request") as HTMLDivElement).innerText =
JSON.stringify(request, null, 2);
// get distance matrix response
service.getDistanceMatrix(request).then((response) => {
// put response
(document.getElementById("response") as HTMLDivElement).innerText =
JSON.stringify(response, null, 2);
// show on map
const originList = response.originAddresses;
const destinationList = response.destinationAddresses;
deleteMarkers(markersArray);
const showGeocodedAddressOnMap = (asDestination: boolean) => {
const handler = ({ results }: google.maps.GeocoderResponse) => {
map.fitBounds(bounds.extend(results[0].geometry.location));
markersArray.push(
new google.maps.Marker({
map,
position: results[0].geometry.location,
label: asDestination ? "D" : "O",
})
);
};
return handler;
};
for (let i = 0; i < originList.length; i++) {
const results = response.rows[i].elements;
geocoder
.geocode({ address: originList[i] })
.then(showGeocodedAddressOnMap(false));
for (let j = 0; j < results.length; j++) {
geocoder
.geocode({ address: destinationList[j] })
.then(showGeocodedAddressOnMap(true));
}
}
});
}
function deleteMarkers(markersArray: google.maps.Marker[]) {
for (let i = 0; i < markersArray.length; i++) {
markersArray[i].setMap(null);
}
markersArray = [];
}
declare global {
interface Window {
initMap: () => void;
}
}
window.initMap = initMap;
JavaScript
function initMap() {
const bounds = new google.maps.LatLngBounds();
const markersArray = [];
const map = new google.maps.Map(document.getElementById("map"), {
center: { lat: 55.53, lng: 9.4 },
zoom: 10,
});
// initialize services
const geocoder = new google.maps.Geocoder();
const service = new google.maps.DistanceMatrixService();
// build request
const origin1 = { lat: 55.93, lng: -3.118 };
const origin2 = "Greenwich, England";
const destinationA = "Stockholm, Sweden";
const destinationB = { lat: 50.087, lng: 14.421 };
const request = {
origins: [origin1, origin2],
destinations: [destinationA, destinationB],
travelMode: google.maps.TravelMode.DRIVING,
unitSystem: google.maps.UnitSystem.METRIC,
avoidHighways: false,
avoidTolls: false,
};
// put request on page
document.getElementById("request").innerText = JSON.stringify(
request,
null,
2,
);
// get distance matrix response
service.getDistanceMatrix(request).then((response) => {
// put response
document.getElementById("response").innerText = JSON.stringify(
response,
null,
2,
);
// show on map
const originList = response.originAddresses;
const destinationList = response.destinationAddresses;
deleteMarkers(markersArray);
const showGeocodedAddressOnMap = (asDestination) => {
const handler = ({ results }) => {
map.fitBounds(bounds.extend(results[0].geometry.location));
markersArray.push(
new google.maps.Marker({
map,
position: results[0].geometry.location,
label: asDestination ? "D" : "O",
}),
);
};
return handler;
};
for (let i = 0; i < originList.length; i++) {
const results = response.rows[i].elements;
geocoder
.geocode({ address: originList[i] })
.then(showGeocodedAddressOnMap(false));
for (let j = 0; j < results.length; j++) {
geocoder
.geocode({ address: destinationList[j] })
.then(showGeocodedAddressOnMap(true));
}
}
});
}
function deleteMarkers(markersArray) {
for (let i = 0; i < markersArray.length; i++) {
markersArray[i].setMap(null);
}
markersArray = [];
}
window.initMap = initMap;
CSS
/* Optional: Makes the sample page fill the window. */
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#container {
height: 100%;
display: flex;
}
#sidebar {
flex-basis: 15rem;
flex-grow: 1;
padding: 1rem;
max-width: 30rem;
height: 100%;
box-sizing: border-box;
overflow: auto;
}
#map {
flex-basis: 0;
flex-grow: 4;
height: 100%;
}
#sidebar {
flex-direction: column;
}
HTML
<html>
<head>
<title>Distance Matrix Service</title>
<script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
<link rel="stylesheet" type="text/css" href="./style.css" />
<script type="module" src="./index.js"></script>
</head>
<body>
<div id="container">
<div id="map"></div>
<div id="sidebar">
<h3 style="flex-grow: 0">Request</h3>
<pre style="flex-grow: 1" id="request"></pre>
<h3 style="flex-grow: 0">Response</h3>
<pre style="flex-grow: 1" id="response"></pre>
</div>
</div>
<!--
The `defer` attribute causes the callback 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>