<!DOCTYPE html>
<html>
<head>
<title>Directions Service</title>
<script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
<!-- jsFiddle will insert css and js -->
</head>
<body>
<div id="map"></div>
<!-- Async script executes immediately and must be after any DOM elements used in callback. -->
<script
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE&callback=initMap&libraries=&v=weekly"
async
></script>
</body>
</html>
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;
}
JavaScript
const point = {lat: 35.77747, lng: -82.4603}
function initMap() {
const directionsService = new google.maps.DirectionsService();
const directionsRenderer = new google.maps.DirectionsRenderer({preserveViewport: true});
const map = new google.maps.Map(document.getElementById("map"), {
zoom: 17,
center: point,
});
const marker = new google.maps.Marker({
map: map,
position: point,
title: "input point"
})
directionsRenderer.setMap(map);
calculateAndDisplayRoute(directionsService, directionsRenderer);
}
function calculateAndDisplayRoute(directionsService, directionsRenderer) {
directionsService.route(
{
origin: point,
destination: point,
travelMode: google.maps.TravelMode.DRIVING,
},
(response, status) => {
if (status === "OK") {
directionsRenderer.setDirections(response);
} else {
window.alert("Directions request failed due to " + status);
}
}
);
}
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