google maps api get location code example

Example 1: get city from location html

<!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>

Example 2: how to pick a location on google maps+ api

<!DOCTYPE html>
<html>
    <head>
        <style type="text/css">
          #map{ width:700px; height: 500px; }
        </style>
        <script type="text/javascript" src="https://maps.googleapis.com/maps/api/js"></script>
        <title>Save Marker Example</title>
    </head>
    <body>
        <h1>Select a location!</h1>
        <p>Click on a location on the map to select it. Drag the marker to change location.</p>
        
        <!--map div-->
        <div id="map"></div>
        
        <!--our form-->
        <h2>Chosen Location</h2>
        <form method="post">
            <input type="text" id="lat" readonly="yes"><br>
            <input type="text" id="lng" readonly="yes">
        </form>
        
        <script type="text/javascript" src="map.js"></script>
    </body>
</html>

Example 3: how to pick a location on google maps+ api

//map.js

//Set up some of our variables.
var map; //Will contain map object.
var marker = false; ////Has the user plotted their location marker? 
        
//Function called to initialize / create the map.
//This is called when the page has loaded.
function initMap() {

    //The center location of our map.
    var centerOfMap = new google.maps.LatLng(52.357971, -6.516758);

    //Map options.
    var options = {
      center: centerOfMap, //Set center.
      zoom: 7 //The zoom value.
    };

    //Create the map object.
    map = new google.maps.Map(document.getElementById('map'), options);

    //Listen for any clicks on the map.
    google.maps.event.addListener(map, 'click', function(event) {                
        //Get the location that the user clicked.
        var clickedLocation = event.latLng;
        //If the marker hasn't been added.
        if(marker === false){
            //Create the marker.
            marker = new google.maps.Marker({
                position: clickedLocation,
                map: map,
                draggable: true //make it draggable
            });
            //Listen for drag events!
            google.maps.event.addListener(marker, 'dragend', function(event){
                markerLocation();
            });
        } else{
            //Marker has already been added, so just change its location.
            marker.setPosition(clickedLocation);
        }
        //Get the marker's location.
        markerLocation();
    });
}
        
//This function will get the marker's current location and then add the lat/long
//values to our textfields so that we can save the location.
function markerLocation(){
    //Get location.
    var currentLocation = marker.getPosition();
    //Add lat and lng values to a field that we can save.
    document.getElementById('lat').value = currentLocation.lat(); //latitude
    document.getElementById('lng').value = currentLocation.lng(); //longitude
}
        
        
//Load the map when the page has finished loading.
google.maps.event.addDomListener(window, 'load', initMap);

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