Created
October 16, 2012 18:27
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Google Maps V3 - Geocoder example
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> | |
| <meta charset="utf-8"> | |
| <title>Google Maps JavaScript API v3 Example: Geocoding Simple</title> | |
| <link href="https://developers.google.com/maps/documentation/javascript/examples/default.css" rel="stylesheet"> | |
| <script src="https://maps.googleapis.com/maps/api/js?sensor=false"></script> | |
| <script> | |
| var geocoder; | |
| var map; | |
| var mapOptions = { | |
| zoom: 17, | |
| mapTypeId: google.maps.MapTypeId.ROADMAP | |
| } | |
| var marker; | |
| function initialize() { | |
| geocoder = new google.maps.Geocoder(); | |
| map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions); | |
| codeAddress(); | |
| } | |
| function codeAddress() { | |
| var address = document.getElementById('address').value; | |
| geocoder.geocode( { 'address': address}, function(results, status) { | |
| if (status == google.maps.GeocoderStatus.OK) { | |
| map.setCenter(results[0].geometry.location); | |
| if(marker) | |
| marker.setMap(null); | |
| marker = new google.maps.Marker({ | |
| map: map, | |
| position: results[0].geometry.location, | |
| draggable: true | |
| }); | |
| google.maps.event.addListener(marker, "dragend", function() { | |
| document.getElementById('lat').value = marker.getPosition().lat(); | |
| document.getElementById('lng').value = marker.getPosition().lng(); | |
| }); | |
| document.getElementById('lat').value = marker.getPosition().lat(); | |
| document.getElementById('lng').value = marker.getPosition().lng(); | |
| } else { | |
| alert('Geocode was not successful for the following reason: ' + status); | |
| } | |
| }); | |
| } | |
| </script> | |
| </head> | |
| <body onload="initialize()"> | |
| <div> | |
| <input id="address" type="textbox" style="width:60%" value="rua tabapuã - vila olimpia - são paulo"> | |
| <input type="button" value="Geocode" onclick="codeAddress()"> | |
| <input type="text" id="lat"/> | |
| <input type="text" id="lng"/> | |
| </div> | |
| <div id="map_canvas" style="height:60%;top:30px"></div> | |
| </body> | |
| </html> |
Actually no Initialize() isn't run twice onload, codeAddress() is run twice on the apps lifecycle. Once onload and once on a button click event, which appears fine
<script type="text/javascript" src="http://maps.google.com/maps/api/js?key=my_api_key"></script>
<script type="text/javascript">
$(document).ready(function(){
console.log('Doc on load');
var address = 'San Diego, CA';
var geocoder = new google.maps.Geocoder();
geocoder.geocode({'address': address}, function(results, status) {
if(status == google.maps.GeocoderStatus.OK) {
if(status != google.maps.GeocoderStatus.ZERO_RESULTS) {
var latitude = results[0].geometry.location.lat();
var longitude = results[0].geometry.location.lng();
initialize(latitude, longitude);
} else {
alert("No results found");
}
} else {
alert("Geocode was not successful for the following reason: " + status);
}
});
function initialize(latitude, longitude) {
var latlng = new google.maps.LatLng(latitude, longitude);
var myOptions = {
zoom: 15,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP,
mapTypeControl: true
};
var map = new google.maps.Map(document.getElementById('map'), myOptions);
var marker = new google.maps.Marker({
position: latlng,
map: map,
title: 'Location, property name'
});
}
});
</script>
<div id="map"></div>
This is my code for geocoder. However it does not show any map. It neither gives me any javascript errors. What am I doing wrong?
like wise, no map is appearing for me neither..
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On line 50 you have defined
body onload="initialize()"
which causes initialize() to run twice.