Google geocode example

<script src="https://maps.googleapis.com/maps/api/js?sensor=false"></script>


<script>
var geocoder;
$(function () {
  geocoder = new google.maps.Geocoder();
	$('#searchBtn').click(function () {
		geoCode($("#locationValue").val(), function (latLon) {
			$('#lat').val(latLon.Lat);
			$('#lon').val(latLon.Lon);
			$('#searchForm').submit();
		});
	});
});

function geoCode(postcode, cb) {
	geocoder.geocode({ 'address': postcode }, function (results, status) {
		if (status == google.maps.GeocoderStatus.OK) {

			var latLng = results[0].geometry.location
			.toString()
			.replace(' ', '')
			.replace('(', '')
			.replace(')', '')
			.split(',');

			cb({ Lat: latLng[0], Lon: latLng[1] });
		} else {
			alert("Geocode was not successful for the following reason: " + status);
		}
	});
}
</script>