Loading Google Maps - javascript

I am trying to load Google Maps in my Javascript, but I keep getting the error 'document.body is null'. Can anybody help?
<html>
<head>
</head>
<body>
<div></div>
</body>
</html>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="https://www.google.com/jsapi?key=gfgfgfgfgfg"></script>
<script type="text/javascript">
$(document).ready(function () {
google.load('maps','3', {other_params: "sensor=false&callback=mapsLoaded&key=gfgfgfgfgf"});
});
function mapsLoaded()
{
alert("done");
}
</script>

For the version 3 of the API you should try a different approach:
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false&libraries=drawing"></script>
<script type="text/javascript">
$(document).ready(function () {
var myOptions = {
center: new google.maps.LatLng(-34.397, 150.644),
zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
});
</script>
</head>
<body>
<div id='map_canvas' style="width:450px; height:450px"></div>
</body>
</html>

To get information of a certain position, and not drawing a map it is better to use Google's geocoding services:
ll = new google.maps.LatLng(-34.397, 150.644);
geocoder = new google.maps.Geocoder();
geocoder.geocode({ latLng: ll}, function(res, status){
console.log(status);
console.log(res);
});
For more details on other params please take a look at the API:
http://code.google.com/apis/maps/documentation/javascript/geocoding.html#GeocodingRequests
Hope it helps.

Move your script to inside the closing body tag:
<html>
<head>...</head>
<body>
...
<script> ... </script>
</body>
</html>

Related

Having troubles libraries=places in google maps api <script>

var map;
var service;
var index = 0;
var posArray = [];
$(document).ready(function(){
navigator.geolocation.getCurrentPosition(init);
});
function init(location) {
enable();
googleMap();
var currentLocation = {lat: location.coords.latitude, lng: location.coords.longitude};
var mapOptions = {
center: currentLocation,
zoom: 10,
mapTypeId: google.maps.MapTypeId.READMAP
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
service = new google.maps.places.PlacesService(map);
google.maps.event.addListenerOnce(map, 'bounds_changed', performSearch);
}
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8"/>
<title>Title</title>
<link rel="stylesheet" th:href="#{/style.css}"/>
<link rel="stylesheet" th:href="#{/bootstrap.css}"/>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key={MY_KEY}&libraries=places"></script>
<script type="text/javascript" th:src="#{/jquery.js}"></script>
<script type="text/javascript" th:src="#{/client.js}"></script>
</head>
I am currently have trouble loading my libraries=places into my google maps api. The api will let me either use the key OR libraries=places but not both. The error shows:
"Exception parsing document: template="index", line 10 - column 134"
line 10 is
script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key={MY_KEY}&libraries=places"
column 134 is the "=" between libraries and places.
Any suggestions would be welcome.
Can you try blow is updated;
<script type="text/javascript" th:src="#{https://maps.googleapis.com/maps/api/js(key='MY_KEY',libraries=places)}"></script>
I was able to get it to work with the following code:
<script type="text/javascript" th:src="#{https://maps.googleapis.com/maps/api/js(libraries=places, key=MY_KEY)}"></script>

google map showing error - https://developers.google.com/maps/documentation/javascript/error-messages#missing-key-map-error

i want to add my custom image in google map but page is not loading giving error saying MissingKeyMapError . i think i have to add authentication key but im unable to add authentication key
https://developers.google.com/maps/documentation/javascript/error-messages#missing-key-map-error
<!DOCTYPE html>
<html>
<head>
<script src="https://maps.googleapis.com/maps/api/js?key=xyzKey" type="text/javascript"></script>
<script>
var myCenter = new google.maps.LatLng(22.8046, 86.2029);
function initialize()
{
var mapProp = {
center:myCenter,
zoom:14,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
var map=new google.maps.Map(document.getElementById("googleMap"),mapProp);
var marker=new google.maps.Marker({
position:myCenter,
icon:'dustbin3.png'
});
marker.setMap(map);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="googleMap" style="width:1500px;height:880px;"></div>
</body>
</html>
Add your api key in the script url
<script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY" type="text/javascript"></script>
Ref https://developers.google.com/maps/documentation/javascript/get-api-key

Adding a google map image on page without touching the <head> section

I´m trying to put a google maps image into my HTML page. I cannot touch the <head> section as the page is dynamically loaded using PHP code (this logic is not explained here).
So, I´ve build the following HTML test code, that doesn´t work - the maps does not appear on screen.
<!DOCTYPE html>
<html lang="en-us">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta charset="UTF-8" />
<title>TEST PAGE</title>
</head>
<body>
<h1>Maps test page.</h1>
<script type="text/javascript">
function initialize() {
alert("Initialize");
var mapCanvas = document.getElementById("mapCanvas");
var mapOptions = {
zoom: 8,
center: new google.maps.LatLng(-34.397, 150.644),
}
var map = new google.maps.Map(mapCanvas, mapOptions);
google.maps.event.addDomListener(window, "load", initialize);
}
window.onload = function() {
alert("Onload");
var script = document.createElement("script");
script.type = "text/javascript";
script.src = "http://maps.googleapis.com/maps/api/js";
document.body.appendChild(script);
}
</script>
<div id="mapCanvas" style="width: 650px; height: 350px;"></div>";
<script type="text/javascript"> initialize() </script>
</body>
</html>
The alerts are coming up, but no map is shown...
Help is appreciated to make is work.
Asynchronously load the Google Maps Javascript API, use the callback parameter to run your initialize function.
working example
<html lang="en-us">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta charset="UTF-8" />
<title>TEST PAGE</title>
</head>
<body>
<h1>Maps test page.</h1>
<script type="text/javascript">
function initialize() {
alert("Initialize");
var mapCanvas = document.getElementById("mapCanvas");
var mapOptions = {
zoom: 8,
center: new google.maps.LatLng(-34.397, 150.644),
}
var map = new google.maps.Map(mapCanvas, mapOptions);
google.maps.event.addDomListener(window, "load", initialize);
}
window.onload = function() {
alert("Onload");
var script = document.createElement("script");
script.type = "text/javascript";
script.src = "http://maps.googleapis.com/maps/api/js?callback=initialize";
document.body.appendChild(script);
}
</script>
<div id="mapCanvas" style="width: 650px; height: 350px;"></div>";
</body>
</html>
The problem is that initialize() is getting executed before the Google Maps Javascript has been added to the page. You aren't importing the Google Maps JS until the DOM has finished loading, in your window.onload callback. Try this instead:
<div id="mapCanvas" style="width: 650px; height: 350px;"></div>
<script src="http://maps.googleapis.com/maps/api/js"></script>
<script>
function initialize() {
alert("Initialize");
var mapCanvas = document.getElementById("mapCanvas");
var mapOptions = {
zoom: 8,
center: new google.maps.LatLng(-34.397, 150.644)
};
var map = new google.maps.Map(mapCanvas, mapOptions);
}
window.onload = function() {
initialize();
};
</script>

Is it possible to set the Google Map key dynamically?

I want to pass the key through url to iframe from parent window.
After fetching the data from URL I want to set it in the map src.
Is this possible?
Because it's working fine when I'm using this code-
<!DOCTYPE html>
<html>
<head>
<script
src="http://maps.googleapis.com/maps/api/js?key=4">
</script>
<script>
function initialize() {
var mapProp = {
center:new google.maps.LatLng(51.508742,-0.120850),
zoom:5,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
var map=new google.maps.Map(document.getElementById("googleMap"), mapProp);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="googleMap" style="width:500px;height:380px;"></div>
</body>
</html>
But if I try this way I'm not sure whether it's using the key or not. Without key also google map works.
I have put one console.log statement but it's not printing anything.
<!DOCTYPE html>
<html>
<head>
<script>
mapKey="45"
</script>
<script
src="http://maps.googleapis.com/maps/api/js?key="+mapKey>
console.log(mapKey)
</script>
<script>
function initialize() {
var mapProp = {
center:new google.maps.LatLng(51.508742,-0.120850),
zoom:5,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
var map=new google.maps.Map(document.getElementById("googleMap"), mapProp);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="googleMap" style="width:500px;height:380px;"></div>
</body>
</html>
javascript will not be parsed in HTML-attributes, create the script dynamically.
Example retrieving the key from the location.hash
<script type="text/javascript">
(function(key){
var url='https://maps.googleapis.com/maps/api/js?v=3&callback=initialize',
script=document.createElement('script');
if(key)url+='&key='+key;
script.setAttribute('src',url);
//load the API
document.getElementsByTagName('head')[0].appendChild(script)
}(
//get the key from the URL
location.hash.substr(1)
));
</script>
Note: remove this line
google.maps.event.addDomListener(window, 'load', initialize);
....the API will run initialize automatically
sample-iframe:
<iframe src="iframe.htm#yourmapsapikey"></iframe>

google maps javascript v3 api not working

I've tried all possible solutions but the map just isn't showing. My webview just shows blank.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<link rel="stylesheet" type="text/css" href="theme.css">
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3&sensor=false"></script>
<script type="text/javascript">
var map; " +
function initialize() {
var latitude = 0;
var longitude = 0;
if (window.android){
latitude = window.android.getLatitude();
longitude = window.android.getLongitude();
}
var myOptions = {
zoom: 20,
center: myLatLng
}
map = new google.maps.Map(document.getElementById('map_canvas'), myOptions);
}
function centerAt(latitude, longitude){
myLatlng = new google.maps.LatLng(latitude,longitude);
map.panTo(myLatLng);
}
</script>
<title>Insert title here</title>
</head>
<body>
<div id="map_canvas" style="height: 100px; width=100px;">This is the map canvas</div>
<script type="text/javascript">initialize();</script>
</body>
</html>
I've narrowed down to this line: map = new google.maps.Map(document.getElementById('map_canvas'), myOptions);
When this line is executed, it fails.
Any help is appreciated.
Thanks.
Regards,
Dexter
I can't see myLatLng definition other than in centerAt() function. You need to pass Google Maps LatLng object to the center attribute of myOptions:
var myLatlng = new google.maps.LatLng(latitude, longitude);
var myOptions = {
zoom: 20,
center: myLatLng
}
...
And there is also a strange thing which I can't understand:
var map; " +
^ ^
my bad, submitted the wrong code. Anyway, the major issue here is the connection. That took me a long time to realize it since i was just focusing on the codes.
Thanks.

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