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/ answers: 1 / hits: 18872
/ 9 Years ago, mon, october 26, 2015, 12:00:00
When i am running the following code, which i have taken from this answer, i am getting Uncaught TypeError: Cannot read property 'geocode' of undefined error in browser's console, why its happening because on the body load here initialize function has to be called, and instead of calling initialize function here codeLatLng(lat, lng) is calling first.
<!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/>
<title>Reverse Geocoding</title>
<script type=text/javascript src=http://maps.googleapis.com/maps/api/js?sensor=false></script>
<script type=text/javascript>
var geocoder;
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(successFunction, errorFunction);
}
//Get the latitude and the longitude;
function successFunction(position) {
var lat = position.coords.latitude;
var lng = position.coords.longitude;
codeLatLng(lat, lng)
}
function errorFunction(){
alert(Geocoder failed);
}
function initialize() {
geocoder = new google.maps.Geocoder();
}
function codeLatLng(lat, lng) {
var latlng = new google.maps.LatLng(lat, lng);
geocoder.geocode({'latLng': latlng}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
console.log(results)
if (results[1]) {
//formatted address
alert(results[0].formatted_address)
//find country name
for (var i=0; i<results[0].address_components.length; i++) {
for (var b=0;b<results[0].address_components[i].types.length;b++) {
//there are different types that might hold a city admin_area_lvl_1 usually does in come cases looking for sublocality type will be more appropriate
if (results[0].address_components[i].types[b] == administrative_area_level_1) {
//this is the object you are looking for
city= results[0].address_components[i];
break;
}
}
}
//city data
alert(city.short_name + + city.long_name)
} else {
alert(No results found);
}
} else {
alert(Geocoder failed due to: + status);
}
});
}
</script>
</head>
<body onload=initialize()>
</body>
</html>
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