In this tutorial, I will give you the complete JavaScript source code of the Google Maps Distance Matrix API example. You will learn how Google Maps Distance Matrix API measures the distance and calculates the journey duration between multiple locations (origins and destinations).
First of all, create a new HTML5 file on your computer and copy/paste the below source code into it.
Important Note: On line # 6, replace ###YOUR_API_KEY### text with your actual Google Maps API key. Otherwise, this code will not work.
<html>
<head>
<title>JavaScript Google Maps Distance Matrix API Example</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script defer src="https://maps.googleapis.com/maps/api/js?libraries=places&language=en&key=###YOUR_API_KEY###" type="text/javascript"></script>
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" id="bootstrap-css" rel="stylesheet"/>
</head>
<body>
<div class="container">
<div class="row">
<div class="jumbotron">
<h1>JavaScript Google Maps Distance Matrix API Example</h1>
</div>
<div class="col-md-6">
<form id="distance_form">
<div class="form-group">
<label>Origin: </label>
<input
class="form-control"
id="from_places"
placeholder="Enter a location"
/>
<input id="origin" name="origin" required="" type="hidden" />
</div>
<div class="form-group">
<label>Destination: </label>
<input
class="form-control"
id="to_places"
placeholder="Enter a location"
/>
<input
id="destination"
name="destination"
required=""
type="hidden"
/>
</div>
<input class="btn btn-primary" type="submit" value="Calculate" />
</form>
<div id="result">
<ul class="list-group">
<li
id="mile"
class="
list-group-item
d-flex
justify-content-between
align-items-center
"
>
Distance In Mile :
</li>
<li
id="kilo"
class="
list-group-item
d-flex
justify-content-between
align-items-center
"
>
Distance is Kilo:
</li>
<li
id="text"
class="
list-group-item
d-flex
justify-content-between
align-items-center
"
>
IN TEXT:
</li>
<li
id="minute"
class="
list-group-item
d-flex
justify-content-between
align-items-center
"
>
IN MINUTES:
</li>
<li
id="from"
class="
list-group-item
d-flex
justify-content-between
align-items-center
"
>
FROM:
</li>
<li
id="to"
class="
list-group-item
d-flex
justify-content-between
align-items-center
"
>
TO:
</li>
</ul>
</div>
</div>
</div>
</div>
<script>
$(function () {
// add input listeners
google.maps.event.addDomListener(window, "load", function () {
var from_places = new google.maps.places.Autocomplete(
document.getElementById("from_places")
);
var to_places = new google.maps.places.Autocomplete(
document.getElementById("to_places")
);
google.maps.event.addListener(
from_places,
"place_changed",
function () {
var from_place = from_places.getPlace();
var from_address = from_place.formatted_address;
$("#origin").val(from_address);
}
);
google.maps.event.addListener(
to_places,
"place_changed",
function () {
var to_place = to_places.getPlace();
var to_address = to_place.formatted_address;
$("#destination").val(to_address);
}
);
});
// calculate distance
function calculateDistance() {
var origin = $("#origin").val();
var destination = $("#destination").val();
var service = new google.maps.DistanceMatrixService();
service.getDistanceMatrix(
{
origins: [origin],
destinations: [destination],
travelMode: google.maps.TravelMode.DRIVING,
unitSystem: google.maps.UnitSystem.IMPERIAL, // miles and feet.
// unitSystem: google.maps.UnitSystem.metric, // kilometers and meters.
avoidHighways: false,
avoidTolls: false,
},
callback
);
}
// get distance results
function callback(response, status) {
if (status != google.maps.DistanceMatrixStatus.OK) {
$("#result").html(err);
} else {
var origin = response.originAddresses[0];
console.log(origin);
var destination = response.destinationAddresses[0];
console.log(destination);
if (response.rows[0].elements[0].status === "ZERO_RESULTS") {
$("#result").html(
"Better get on a plane. There are no roads between " +
origin +
" and " +
destination
);
} else {
var distance = response.rows[0].elements[0].distance;
console.log(distance);
var duration = response.rows[0].elements[0].duration;
console.log(duration);
console.log(response.rows[0].elements[0].distance);
var distance_in_kilo = distance.value / 1000; // the kilom
var distance_in_mile = distance.value / 1609.34; // the mile
console.log(distance_in_kilo);
console.log(distance_in_mile);
var duration_text = duration.text;
var duration_value = duration.value;
$("#mile").html(
`Distance in Miles: ${distance_in_mile.toFixed(2)}`
);
$("#kilo").html(
`Distance in Kilometre: ${distance_in_kilo.toFixed(2)}`
);
$("#text").html(`Distance in Text: ${duration_text}`);
$("#minute").html(`Distance in Minutes: ${duration_value}`);
$("#from").html(`Distance From: ${origin}`);
$("#to").text(`Distance to: ${destination}`);
}
}
}
// print results on submit the form
$("#distance_form").submit(function (e) {
e.preventDefault();
calculateDistance();
});
});
</script>
</body>
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