Why won't google map navigate on my web page? - html

Question

I want to locate a user's location using Geolocation and then navigate between user;s position and a fix point, but Google map just won't navigate and I am using the codes from Google's official documentation!
What's wrong? I am going mad after tried thousands of times,plz help
<script type="text/javascript">
$( "#map-page" ).live( "pageinit", function() {
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
var salon = new google.maps.LatLng(22.981666,120.194301);
var defaultLatLng = new google.maps.LatLng(22.983587,120.22599); // Default to Hollywood, CA when no geolocation support
if ( navigator.geolocation ) {
function success(pos) {
// Location found, show map with these coordinates
drawMap(new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude));
calcRoute(new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude));
}
function fail(error) {
console.log(error);
drawMap(defaultLatLng); // Failed to find location, show default map
}
// Find the users current position. Cache the location for 5 minutes, timeout after 6 seconds
navigator.geolocation.getCurrentPosition(success, fail, {maximumAge: 500000, enableHighAccuracy:true, timeout: 6000});
} else {
drawMap(defaultLatLng); // No geolocation support, show default map
}
function drawMap(latlng) {
var myOptions = {
zoom: 10,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map-canvas"), myOptions);
// Add an overlay to the map of current lat/lng
var marker = new google.maps.Marker({
position: latlng,
map: map,
title: "Greetings!"
});
var marker = new google.maps.Marker({
position:new google.maps.LatLng(22.981666,120.194301),
map:map,
title:"the salon"
});
}
function calcRoute(latlng) {
var start = latlng;
var end = new google.maps.LatLng(22.981666,120.194301);
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);
}
});
}
});
</script>

Answer 1

You forgot to setup directionsDisplay.