I can't seem to figure out how to attach a click event to a Google map, is it only possible to do so on the marker? This doesn't seem to do anything:
google.maps.event.addListener(map, 'click', function() {
console.log('clicked');
});
I've also tried using jQuery, but that catches two events, I'm guessing something to do with overlays:
EDIT: some idiot initiated the map twice, and attached the event in the same function, hence two events. jQuery works just as well, and in fact can handle more events.
$('#placeholder').click(function() {console.log('clicked');});
Am I missing something?
Your code works for me. try (Ctrl + F5) to reload page without cache.
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0px; padding: 0px }
#map_canvas { height: 100% }
</style>
<title>Google Maps Example</title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script type="text/javascript">
function initialize() {
var myLatlng = new google.maps.LatLng(-34.397, 150.644);
var myOptions = {
zoom: 3,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
google.maps.event.addListener(map, 'click', function () {
console.log('clicked');
});
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas"></div>
</body>
</html>
Maybe your map name is incorrect? Show us your entire code.
Here's an example of attaching a click event handler to a map
http://jsfiddle.net/galen/EXRSD/
Related
copy paste from google instructions:
<!DOCTYPE html>
<html>
<head>
<title>Simple Map</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<div id="capture"></div>
<script>
var map;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -34.397, lng: 150.644},
zoom: 8
});
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC8kDz25qFYhy1UYiPyrzvcOpkiwZz9C4o&callback=initMap"
async defer></script>
</body>
</html>
and I'm still getting this error of google:
"Oops! Something went wrong.
This page didn't load Google Maps correctly. See the JavaScript console for technical details."
Why it's so complicated?
Here is my API Key
It's simple. You did not activate the API key. I do not recall exactly where in the process this happens or how but it is one of the steps when you created the key.
Google Maps API error: ApiNotActivatedMapError
And included in the console message is the link to your instructions on what to do: https://developers.google.com/maps/documentation/javascript/error-messages#api-not-activated-map-error`
I am using google maps javascript api V3 to create maps in our adobe flex based application. I am using flex iframes to communicate between flex and javascript api. I am having two issues.
I call a function in html file to create the map in div tag in html. Then map shows up but when I call another function to create the marker, I get stack overflow error. On analyzing this issue I found that somehow it is unable to get the reference of map which was created previous method. Is there a way to resolve this. Please find the code
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>Google Maps Markers</title>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp"
type="text/javascript"></script>
</head>
<body>
<div id="map-canvas" style="width: 650px; height: 250px;"></div>
<script type="text/javascript">
var map;
var DFWCenter = new google.maps.LatLng(32.9017,-97.0405770);
function showMap()
{
map = new google.maps.Map(document.getElementById('map-canvas'), {
zoom: 15,
center: DFWCenter,
mapTypeId: google.maps.MapTypeId.HYBRID
});
}
function createCustomMarker(station,lat1, lang1){
var marker= new google.maps.Marker({
position: new google.maps.LatLng(lat1,lang1),
map: map
});
marker.setMap(map);
}
</script>
</body>
</html>
#deejay: If you r not getting the reference of map, u can try this by taking it as a global variable, I tried this and was not able to produce your case as it was working simply fine, when I first call showMap() and then createCustomMarker().
Check fiddle.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>Google Maps Markers</title>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp"></script>
<script type="text/javascript">
var DFWCenter = new google.maps.LatLng(32.9017, -97.0405770);
function showMap() {
map = new google.maps.Map(document.getElementById('map-canvas'), {
zoom: 15,
center: DFWCenter,
mapTypeId: google.maps.MapTypeId.HYBRID
});
createCustomMarker(DFWCenter.A, DFWCenter.F);
}
function createCustomMarker(lat1, lang1) {
var marker = new google.maps.Marker({
position: new google.maps.LatLng(lat1, lang1),
map: map
});
marker.setMap(map);
}
</script>
</head>
<body onload="showMap()">
<div id="map-canvas" style="width: 650px; height: 250px;"></div>
</body>
</html>
I'm trying to build a mobile application using Google Maps Javascript API v3. Functionally, it's doing fine, but the performance is really sluggish on middleware Android devices (used Samsung Galaxy 3 for testing).
I also checked the performance on the official http://maps.google.com, had the same result, and using the first example code as well. Is there any mobile specific step, I might have missed (see the example code), or the Javascript API performance is limited to this level, and building a native application cannot be avoided in this case?
Thank you very much for the answers!
Here is the code of the linked page:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
</style>
<script type="text/javascript"
src="http://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&sensor=SET_TO_TRUE_OR_FALSE">
</script>
<script type="text/javascript">
function initialize() {
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 onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>
</body>
</html>
As per official documentation, your code is right. And maps is optimized.
I suggest:
Try to change the script URL to http://maps.googleapis.com/maps/api/js?sensor=false
Load scripts at end of page.
Example:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100%; width: 100%; }
</style>
</head>
<body>
<div id="map_canvas"></div>
<script src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script>
function initialize() {
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);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</body>
</html>
Try the demo out at http://fiddle.jshell.net/tomasdev/8FhYz/show/light/ — I'm in doubt regarding your device. If official demos work slow, I don't think there is a quite good solution.
Google maps performance is VERY MUCH dependant on how well structured the whole page is.
The biggest performance hit usually comes from repaint/render cycles of the page - caused by the tiles loading / unloading.
Dependant on how the map is placed and how you use it, it's a benefit to position the map element using position:fixed, taking it out of the document flow. Position:absolute can also help, but not as much as 'fixed'.
I am working with Google Maps and I want to load the map in an external file, where I can use jQuery to set up the rest of the page.
I have made three changes to the Hello World example: I've included jQuery, I've initialised the map in an external file, and I've removed the onload event in the <body> tag. And I now have a blank screen where there used to be a map, and no console errors to give me a clue.
This is my HTML:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
</style>
<script src="./js/jquery.js"></script>
<script type="text/javascript"
src="http://maps.googleapis.com/maps/api/js?sensor=true">
<script src="./js/maps.js"></script>
</head>
<body>
<div id="map_canvas" style="width:100%; height:100%"></div>
</body>
</html>
This is maps.js in full:
$(document).ready(function () {
console.log('document ready');
function initializeMap() {
console.log('initialize');
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);
}
initializeMap();
});
I don't see any of the console statements. I also don't see a map - just a blank screen.
I must be doing something stupid, but what is it?
You're missing an </script> after src="http://maps.googleapis.com/maps/api/js?sensor=true">
In this google map sample: http://code.google.com/apis/maps/documentation/javascript/examples/streetview-simple.html
If the user dropped the little guy far away in the middle of the ocean for example, it disappears.
But in the main google map website http://maps.google.com/ If you made it show the street view, and the user dragged the guy away it get back automatically to the previous point.
What is missed in the first example to make it behave the same as the google map website?
here is the code of the sample:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<title>Google Maps JavaScript API Example: Street View Layer</title>
<link href="http://code.google.com/apis/maps/documentation/javascript/examples/standard.css" rel="stylesheet" type="text/css" />
<script src="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript"></script>
<script type="text/javascript">
function initialize() {
var fenway = new google.maps.LatLng(42.345573,-71.098326);
var mapOptions = {
center: fenway,
zoom: 14,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(
document.getElementById("map_canvas"), mapOptions);
var panoramaOptions = {
position: fenway,
pov: {
heading: 34,
pitch: 10,
zoom: 1
}
};
var panorama = new google.maps.StreetViewPanorama(document.getElementById("pano"),panoramaOptions);
map.setStreetView(panorama);
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width: 400px; height: 300px"></div>
<div id="pano" style="position:absolute; left:410px; top: 8px; width: 400px; height: 300px;"></div>
</body>
</html>
To do this, add an event listener to position_changed and use it to store the last (valid) location that pegman was dropped.
google.maps.event.addListener(panorama, 'position_changed', function() {
// Store position
});
And then add an event listener to visibility_changed (which is triggered when pegman is dropped in the ocean) to set him back to the last known location:
google.maps.event.addListener(panorama, 'visible_changed', function() {
if (panorama.getVisible() == false && last_location) {
panorama.setPosition(last_location);
}
});