Hi I am trying to draw a route map between two markers using javascript. I have tried various examples found online but my map is not loading while trying out different examples. I am unable to figure out the cause of the error. My map just does not load.
I am trying to draw a route for the below two markers.
<script>
function mapLocation() {
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var chicago = new google.maps.LatLng(37.334818, -121.884886);
var mapOptions = {
zoom: 7,
center: chicago
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
directionsDisplay.setMap(map);
}
function calcRoute() {
var start = new google.maps.LatLng(37.334818, -121.884886);
var end = new google.maps.LatLng(38.334818, -181.884886);
var request = {
origin: start,
destination: end,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function (response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
}
});
}
google.maps.event.addDomListener(window, 'load', initialize);
}
mapLocation();
</script>
Can someone please help me draw a route between the two markers?
Using Google Maps, you can create a custom route and send it to your phone. You can save it offline if you have an Android device, but not with an iOS device as of this writing.
Google Maps android app can nicely draw a route from one point to another, keeping the route on the roads.
Quite a few mistakes. First is the geolocation. Your second location is wrong as the longitude can only be from +180 to -180 so -181 doesn't exist in the earth! Secondly, as MrUpsidedown mentioned in the comment, you are calling a function within a function. Correct the geolocation first and then your function calls, that should fix the problems you're having.
Two comments:
Issues:
if (status == "OK")
test to see that.working fiddle
function mapLocation() {
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var chicago = new google.maps.LatLng(37.334818, -121.884886);
var mapOptions = {
zoom: 7,
center: chicago
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
directionsDisplay.setMap(map);
google.maps.event.addDomListener(document.getElementById('routebtn'), 'click', calcRoute);
}
function calcRoute() {
var start = new google.maps.LatLng(37.334818, -121.884886);
//var end = new google.maps.LatLng(38.334818, -181.884886);
var end = new google.maps.LatLng(37.441883, -122.143019);
var bounds = new google.maps.LatLngBounds();
bounds.extend(start);
bounds.extend(end);
map.fitBounds(bounds);
var request = {
origin: start,
destination: end,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function (response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
directionsDisplay.setMap(map);
} else {
alert("Directions Request from " + start.toUrlValue(6) + " to " + end.toUrlValue(6) + " failed: " + status);
}
});
}
google.maps.event.addDomListener(window, 'load', initialize);
}
mapLocation();
working code snippet:
function mapLocation() {
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var chicago = new google.maps.LatLng(37.334818, -121.884886);
var mapOptions = {
zoom: 7,
center: chicago
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
directionsDisplay.setMap(map);
google.maps.event.addDomListener(document.getElementById('routebtn'), 'click', calcRoute);
}
function calcRoute() {
var start = new google.maps.LatLng(37.334818, -121.884886);
//var end = new google.maps.LatLng(38.334818, -181.884886);
var end = new google.maps.LatLng(37.441883, -122.143019);
var request = {
origin: start,
destination: end,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
directionsDisplay.setMap(map);
} else {
alert("Directions Request from " + start.toUrlValue(6) + " to " + end.toUrlValue(6) + " failed: " + status);
}
});
}
google.maps.event.addDomListener(window, 'load', initialize);
}
mapLocation();
html,
body,
#map-canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<input type="button" id="routebtn" value="route" />
<div id="map-canvas"></div>
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