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<!DOCTYPE html> <html> <head> <!-- www.techstrikers.com --> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> <meta charset="utf-8"> <title>Add Directions service</title> <style> html, body { height: 100%; margin: 0; padding: 0; } #map { height: 99%; width: 99%; } #floating-panel { position: absolute; top: 0px; left: 25%; z-index: 5; background-color: #fff; padding: 0px; border: 1px solid #999; text-align: center; font-family: 'Roboto','sans-serif'; line-height: 0px; padding-left: 10px; } </style> <script src="https://maps.googleapis.com/maps/api/js?signed_in=true&callback=initMap" async defer></script> <script> function initMap() { var lat_lng = {lat: 22.08672, lng: 79.42444}; var directionsService = new google.maps.DirectionsService; var directionsDisplay = new google.maps.DirectionsRenderer; var map = new google.maps.Map(document.getElementById('map'), { zoom: 6, center: lat_lng }); directionsDisplay.setMap(map); var onChangeHandler = function() { calculateAndDisplayRoute(directionsService, directionsDisplay); }; document.getElementById('Source').addEventListener('change', onChangeHandler); document.getElementById('Destination').addEventListener('change', onChangeHandler); } function calculateAndDisplayRoute(directionsService, directionsDisplay) { directionsService.route({ origin: document.getElementById('Source').value, destination: document.getElementById('Destination').value, travelMode: google.maps.TravelMode.DRIVING }, function(response, status) { if (status === google.maps.DirectionsStatus.OK) { directionsDisplay.setDirections(response); } else { window.alert('Directions request failed due to ' + status); } }); } </script> </head> <body> <div id="floating-panel"> <b>Source: </b> <select id="Source" onchange="calcRoute();"> <option value="Mumbai, in">Mumbai</option> <option value="New Delhi, in">New Delhi</option> <option value="Kolkata, in">Kolkata</option> <option value="Chennai, in">Chennai</option> <option value="Indore, in">Indore</option> <option value="Hyderabad, in">Hyderabad</option> <option value="Pune, in">Pune</option> <option value="Bhopal, in">Bhopal</option> <option value="Ahemdabad, in">Ahemdabad</option> <option value="Jaipur, in">Jaipur</option> <option value="Bengluru, in">Bengluru</option> </select> <b>Destination: </b> <select id="Destination" onchange="calcRoute();"> <option value="Mumbai, in">Mumbai</option> <option value="New Delhi, in">New Delhi</option> <option value="Kolkata, in">Kolkata</option> <option value="Chennai, in">Chennai</option> <option value="Indore, in">Indore</option> <option value="Hyderabad, in">Hyderabad</option> <option value="Pune, in">Pune</option> <option value="Bhopal, in">Bhopal</option> <option value="Ahemdabad, in">Ahemdabad</option> <option value="Jaipur, in">Jaipur</option> <option value="Bengluru, in">Bengluru</option> </select> </div> <div id="map"></div> </body> </html>