Google map is showing grey box or sometimes show nothing/white
i googled some links and try their ways but didn't work for me.
Any solution?
i tried to change the zoom but still not working
Console shows no error
<head>
<script src="http://maps.google.com/maps?file=api&v=3&hl=en&key=GOOGLE_GENERATED_API&sensor=true"type="text/javascript"></script>
<script>
function myMap() {
var myCenter = new google.maps.LatLng(31.4856,74.3406);
var mapCanvas = document.getElementById("map");
var mapOptions = {center: myCenter, zoom: 8};
var map = new google.maps.Map(mapCanvas, mapOptions);
var marker = new google.maps.Marker({position:myCenter});
marker.setMap(map);
var infowindow = new google.maps.InfoWindow({
content: "Welcome to Ali Institute of Education"
});
infowindow.open(map,marker);
}
</script>
</head>
<body onload="myMap()">
<?php include '/layout/header.php';?>
<!-- Contact Us Content -->
<div class="container-fluid">
<div id="map" style="width: 800px; height: 400px; overflow:visible;"> </div>
</div>
</body>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&hl=en&key=GOOGLE_GENERATED_API&sensor=true" ></script>
<!--OR-->
<script src="https://maps.google.com/maps/api/js?file=api&v=3&hl=en&key=GOOGLE_GENERATED_API&sensor=true"></script>
On this link replace text GOOGLE_GENERATED_API with your google api key.
Showing perfect on my side. Which error you get on your browser consollog ?
your maps API cdn is not correct. Maybe you get this error google is not define.
google.maps.event.addDomListener (myMap); ADD this line or you can remove the onload from body and add this
google.maps.event.addDomListener (window, 'load', myMap);
Additionaly I have added a click function on marker. If you have any question ask me in comment.
function myMap() {
var myCenter = new google.maps.LatLng(31.4856,74.3406);
var mapCanvas = document.getElementById("map");
var mapOptions = {center: myCenter, zoom: 8};
var map = new google.maps.Map(mapCanvas, mapOptions);
var marker = new google.maps.Marker({position:myCenter});
marker.setMap(map);
var infowindow = new google.maps.InfoWindow({
content: "Welcome to Ali Institute of Education"
});
marker.addListener('click', function () {
infowindow.open(map, marker);
});
google.maps.event.addDomListener (myMap);
//google.maps.event.addDomListener (window, 'load', myMap);
// if you use the window load myMap You don't need onload function on body tag
}
#map{
width: 800px;
height: 400px;
overflow:visible;
}
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&"></script>
</head>
<body onload="myMap()">
<div class="container-fluid">
<div id="map"></div>
</div>
</head>
Related
I'm trying to use a zoom listener event in a google maps so that I can resize some axis I have in it. As a beginning, I'm trying to use an alert so that I can see whether if the listener detects a change in the zoom level or not, but I'm not able to get any alert at all. My code is the following:
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps - pygmaps </title>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?libraries=visualization&sensor=true_or_false"></script>
<script type="text/javascript">
var map;
function initialize() {
var centerlatlng = new google.maps.LatLng(49.801674, 11.188139);
var myOptions = {
zoom: 18,
center: centerlatlng,
scaleControl:true,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
* plotting stuff *
google.maps.event.addDomListener(window, 'load',initialize);
google.maps.event.addDomListener(maps,'zoom_changed', function()
{
alert("changed");
});
</script>
</head>
<body>
<div style="text-align:center;">
<button onclick="draw_axis()">Enable/Disable Axis</button> <br><br> <div id="log"></div>
</div>
<div id="map_canvas" style="width: 100%; height: 90%;"></div>
</body>
</html>
Does anyone see the problem?
The map variable isn't defined when you create the zoom_changed listener, it is created later, when the initialize function runs (also the variable is map, not maps).
code snippet:
var map;
function initialize() {
var centerlatlng = new google.maps.LatLng(49.801674, 11.188139);
var myOptions = {
zoom: 18,
center: centerlatlng,
scaleControl: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
google.maps.event.addDomListener(map, 'zoom_changed', function() {
alert("changed");
});
}
google.maps.event.addDomListener(window, 'load', initialize);
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div style="text-align:center;">
<div id="log"></div>
</div>
<div id="map_canvas" style="width: 100%; height: 90%;"></div>
You need to set zoom_changed event on the instance of google.maps.Map inside your initialize() function.
map.addListener('zoom_changed', function() {
alert("changed");
});
I'm trying to make google maps appears in my website, but the coordinates is displayed dynamically based on database. Here is my code
HTML :
<div class="panel panel-primary">
<div class="panel-heading">
Maps
</div>
<div class="panel-body" id="maps-area" style="height: 500px;" onLoad="loadMap(<?=$row->maps;?>)">
</div>
</div>
JavaScript :
function loadMap(x)
{
var mapOptions =
{
center: new google.maps.LatLng(x),
zoom: 17,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("maps-area"), mapOptions);
var marker = new google.maps.Marker
({
position: new google.maps.LatLng(x),
});
marker.setMap(map);
}
google.maps.event.addDomListener(window, "load", loadMap);
Load Maps API :
<script type="text/javascript" src="http://maps.google.com/maps/api/js"></script>
But the maps is wouldn't appears. Can anyone tell where is wrong from my code? Thanks before :)
Working version... all i changed is...
<?=$row->maps;?>// i guess this doesn't work as expected??
following is the working version... i hard coded your lat long(taken from your comment)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<script type="text/javascript" src="http://maps.google.com/maps/api/js"></script>
<body>
<script type="text/javascript">
function loadMap() {
var mapOptions = {
center : new google.maps.LatLng(-7.567472,110.796774),
zoom : 17,
mapTypeId : google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("maps-area"), mapOptions);
var marker = new google.maps.Marker({
position : new google.maps.LatLng(x),
});
marker.setMap(map);
}
google.maps.event.addDomListener(window, "load", loadMap);
</script>
</body>
<div class="panel panel-primary">
<div class="panel-heading">Maps</div>
<div class="panel-body" id="maps-area" style="height: 500px;" onLoad="loadMap()"></div>
</div>
</html>
I have an external json which I am trying to overlay on a google map. The overall plumbing works fine.
The map gets generated. Data gets iterated, and markers are placed by reading the coordinates. But the when i look at the map the coordinates are way off on the map. The data set can not be wrong, i can give my word on that. Is there some adjustment I need to make to get this thing map to each other. Here is my code
<!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="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript"></script>
<script type="text/javascript">
var map;
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(40.748433, -73.985655),
zoom: 11,
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-1.8.3.js'></script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>
<script type="text/javascript">
$(document).ready(function() {
var image = 'http://soumghosh.com/otherProjects/doitt/images/marker.png';
$.getJSON("http://data.cityofnewyork.us/resource/jfzu-yy6n.json", function(json1) {
$.each(json1, function(key, data) {
var latLng = new google.maps.LatLng(data.facility_address.latitude, data.facility_address.longitude);
// Creating a marker and putting it on the map
var marker = new google.maps.Marker({
position: latLng,
title: data.title,
icon:image
});
marker.setMap(map);
});
});
});
</script>
</body>
</html>
Assume I have put a marker at a specific location on the Map.
I want the program to open a pop-up window called bla.php when the user click on this marker.
This is what I already done to put the marker:
<!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="https://maps.googleapis.com/maps/api/js?key=AIzaSyDxVucBtLP4XefoM4syoigBgXntwkVGxv8&sensor=false">
</script>
<script type="text/javascript">
function initialize() {
var mapOptions = {
zoom: 4,
center: new google.maps.LatLng(48, 2),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
var position = new google.maps.LatLng(48,2);
var marker = new google.maps.Marker({
position: position,
map: map
});
marker.setTitle("pv-unit");
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map-canvas"/>
</body>
I tried it, the whole map is not loading
First you need an event listener for your marker. Then within that, whatever code you want for opening a popup, e.g.
google.maps.event.addListener(marker, 'click', function() {
window.open('blah.php','name','height=200,width=150');
});
So I am preparing a page which has a Google Map and there are two forms namely latitude and longitude , and a submit button.
On entering the longitude and latitude the map is centered to the desired location and puts a marker there.
The problem I am facing is that whenever I put a new lat/long , the old marker won't go.
So basically if entered first lat/long : 10/12 , it would center to that and place a marker there, but when i enter the second lat/long (say) : 11/12 , it would center to that too and place a marker there also while the first one is not removed.
I want the page to be whenever the a new entered in the form only that one reflects in the form no old markers.
Here's my CODE :
<!DOCTYPE html>
<html>
<head>
<title>Google Maps</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
html, body, #map-canvas {
margin: 0;
padding: 0;
height: 100%;
}
</style>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script>
var map;
function initialize() {
var mapOptions = {
zoom: 8,
center: new google.maps.LatLng(11.6667,76.2667),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
}
google.maps.event.addDomListener(window, 'load', initialize);
function pan() {
var panPoint = new google.maps.LatLng(document.getElementById("lat").value, document.getElementById("lng").value);
map.setCenter(panPoint)
var marker = new google.maps.Marker({
map: map,
position: panPoint,
});
}
</script>
</head>
<body>
Latitude:<input type="text" id="lat" >
Longitude:<input type="text" id="lng">
<input type="button" value="updateCenter" onclick="pan()" />
<div id="map-canvas"></div>
</body>
</html>
Some help would be useful
You need to clear markers each time in order to do that.
To clean marker keep marker as global variable, eg.
function pan() {
try{
marker.setMap(null);//clear marker
}
catch(err){
}
var panPoint = new google.maps.LatLng(document.getElementById("lat").value, document.getElementById("lng").value);
map.setCenter(panPoint)
//declare marker as global variable
marker = new google.maps.Marker({
map: map,
position: panPoint,
});
}
That should do the trick.
use this code
<!DOCTYPE html>
<html>
<head>
<title>Google Maps</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
html, body, #map-canvas {
margin: 0;
padding: 0;
height: 100%;
}
</style>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script>
var map;
var markersArray=[];
function initialize() {
var mapOptions = {
zoom: 8,
center: new google.maps.LatLng(11.6667,76.2667),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
}
google.maps.event.addDomListener(window, 'load', initialize);
function pan() {
deleteOverlays();
var panPoint = new google.maps.LatLng(document.getElementById("lat").value, document.getElementById("lng").value);
map.setCenter(panPoint)
var marker = new google.maps.Marker({
map: map,
position: panPoint,
});
markersArray.push(marker);
}
function deleteOverlays() {
if (markersArray) {
for (i in markersArray) {
markersArray[i].setMap(null);
}
markersArray.length = 0;
}
}
</script>
</head>
<body>
Latitude:<input type="text" id="lat" >
Longitude:<input type="text" id="lng">
<input type="button" value="updateCenter" onclick="pan()" />
<div id="map-canvas"></div>
</body>
</html>
In the pan function before adding the new marker, try to remove all the present markers Google Maps API v3: How to remove all markers?