https://jsfiddle.net/alvaroAV/qn8bb8q5/
<!-- To use Geocoding from Google Maps V3 you need to link https://maps.googleapis.com/maps/api/js?sensor=false -->
<div>
<h3> Enter an adress and press the button</h3>
<input id="address" type="text" placeholder="Enter address here" />
<button id="btn">Get LatLong</button>
<div>
<p>Latitude:
<input type="text" id="latitude" readonly />
</p>
<p>Longitude:
<input type="text" id="longitude" readonly />
</p>
</div>
</div>
<script>
/* This showResult function is used as the callback function*/
function showResult(result) {
document.getElementById('latitude').value = result.geometry.location.lat();
document.getElementById('longitude').value = result.geometry.location.lng();
}
function getLatitudeLongitude(callback, address) {
// If adress is not supplied, use default value 'Ferrol, Galicia, Spain'
address = address || 'Ferrol, Galicia, Spain';
// Initialize the Geocoder
geocoder = new google.maps.Geocoder();
if (geocoder) {
geocoder.geocode({
'address': address
}, function (results, status) {
if (status == google.maps.GeocoderStatus.OK) {
callback(results[0]);
}
});
}
}
var button = document.getElementById('btn');
button.addEventListener("click", function () {
var address = document.getElementById('address').value;
getLatitudeLongitude(showResult, address)
});
</script>