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I have to add multiple marker to a google map, but the data is in an extern json file.
At the moment Im running it like this
var json = [
{
"title": "Stockholm",
"lat": 59.3,
"lng": 18.1,
"description": "Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia with a population of 2.1 million in the metropolitan area (2010)"
},
{
"title": "Oslo",
"lat": 59.9,
"lng": 10.8,
"description": "Oslo is a municipality, and the capital and most populous city of Norway with a metropolitan population of 1,442,318 (as of 2010)."
},
{
"title": "Copenhagen",
"lat": 55.7,
"lng": 12.6,
"description": "Copenhagen is the capital of Denmark and its most populous city, with a metropolitan population of 1,931,467 (as of 1 January 2012)."
}
];
for (var i = 0, length = json.length; i < length; i++) {
var data = json[i],
latLng = new google.maps.LatLng(data.lat, data.lng);
// Creating a marker and putting it on the map
var marker = new google.maps.Marker({
position: latLng,
map: map,
title: data.title
});
}
Now im trying to exlude the Json File to an another file, but sadyl I cant get it to work ;(
Code
$.getJSON("foo.txt", function(json1) {
});
for (var i = 0, length = json.length; i < length; i++) {
var data = json[i],
latLng = new google.maps.LatLng(data.lat, data.lng);
// Creating a marker and putting it on the map
var marker = new google.maps.Marker({
position: latLng,
map: map,
title: data.title
});
}
foo.txt
{
"title": "Stockholm",
"lat": 59.3,
"lng": 18.1,
"description": "Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia with a population of 2.1 million in the metropolitan area (2010)"
},
{
"title": "Oslo",
"lat": 59.9,
"lng": 10.8,
"description": "Oslo is a municipality, and the capital and most populous city of Norway with a metropolitan population of 1,442,318 (as of 2010)."
},
{
"title": "Copenhagen",
"lat": 55.7,
"lng": 12.6,
"description": "Copenhagen is the capital of Denmark and its most populous city, with a metropolitan population of 1,931,467 (as of 1 January 2012)."
}
Thanks for your help
991
2048 characters in URL is just under 100 GeoCode values. So, again no more than 100 markers.
There are two problems in your code. Your json file misses the [ at the beginning and ] at the end. Your javascript is wrong too, you want to do something with the json in the callback of getJSON. The code for your problem is:
$.getJSON("foo.txt", function(json1) {
$.each(json1, function(key, data) {
var latLng = new google.maps.LatLng(data.lat, data.lng);
// Creating a marker and putting it on the map
var marker = new google.maps.Marker({
position: latLng,
map: map,
title: data.title
});
});
});
EDIT:
Here is a working example based on the google maps tutorial. You need the correct file foo.txt:
<!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=true">
</script>
<script type="text/javascript">
var map;
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(58, 16),
zoom: 7,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"),
mapOptions);
}
</script>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>
<script type="text/javascript">
$(document).ready(function() {
$.getJSON("foo.txt", function(json1) {
$.each(json1, function(key, data) {
var latLng = new google.maps.LatLng(data.lat, data.lng);
// Creating a marker and putting it on the map
var marker = new google.maps.Marker({
position: latLng,
title: data.title
});
marker.setMap(map);
});
});
});
</script>
</body>
</html>
The example halex provided didn't work for me.
I sorted it out by adding square brackets into foo.txt to declare it as an array and running a web server to access the html file, rather than just opening it in a browser.
I also needed to add a delay:
setTimeout(function (){marker.setMap(map);}, 1000);
Now it works beautifully!
27
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