Create map after get information of location through AJAX - ajax

Question

I need to get the longitude and latitude of a location from a text file through AJAX then create a map using that information. This is what I have done:
function createMap(){
var request;
if (window.XMLHttpRequest)
{
request = new XMLHttpRequest();
}
if (request)
{
var number = Math.floor( (Math.random() * 3) + 1 );
var url = "text_" + number + ".txt";
request.open("GET", url,true);
request.onreadystatechange = function()
{
if (request.readyState == 4 && request.status == 200)
{
var syd=new google.maps.LatLng(-33.884183, 151.214944);
var woll=new google.maps.LatLng(request.responseText);
function initialize()
{
var mapProp = {
center:syd,
zoom:6,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
var map=new google.maps.Map(document.getElementById("outputAJAX"),mapProp);
var myTrip=[syd,woll];
var flightPath=new google.maps.Polyline({
path:myTrip,
strokeColor:"#0000FF",
strokeOpacity:0.8,
strokeWeight:2
});
flightPath.setMap(map);
}
initialize();
}
}
request.send();
} else {
document.getElementById("outputAJAX").innerHTML = "<span style='font-weight:bold;'>AJAX</span> is not supported by this browser!";
}}
However, the map didn't show up. Do you guys have any suggestion?

Answer 1

A google.maps.LatLng object takes two Numbers as its arguments:
LatLng(lat:number, lng:number, noWrap?:boolean) Creates a LatLng object representing a geographic point. Latitude is specified in degrees within the range [-90, 90]. Longitude is specified in degrees within the range [-180, 180]. Set noWrap to true to enable values outside of this range. Note the ordering of latitude and longitude.
This won't work (you are only passing one argument, a string):
var woll=new google.maps.LatLng(request.responseText);
Assuming request.responseText is a comma separated string containing two numeric values, this should work:
var coordStr = request.responseText;
var coords = coordStr.split(",");
var woll = new google.maps.LatLng(parseFloat(coords[0]),
parseFloat(coords[1]));
proof of concept fiddle