Related lat,lng using javascript - laravel

Question

<script>
/* Edit */
function initialize()
{
var latlng = new google.maps.LatLng(51.165691,10.451526000000058);
var map = new google.maps.Map(document.getElementById('map'), {
center: latlng,
zoom: 13
});
var marker = new google.maps.Marker({
map: map,
position: latlng,
draggable: true,
anchorPoint: new google.maps.Point(0, -29)
});
var input = document.getElementById('searchInput');
// map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
var geocoder = new google.maps.Geocoder();
var autocomplete = new google.maps.places.Autocomplete(input);
autocomplete.bindTo('bounds', map);
var infowindow = new google.maps.InfoWindow();
autocomplete.addListener('place_changed', function() {
infowindow.close();
marker.setVisible(false);
var place = autocomplete.getPlace();
if (!place.geometry) {
window.alert("Autocomplete's returned place contains no geometry");
return;
}
// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17);
}
marker.setPosition(place.geometry.location);
marker.setVisible(true);
alert('Edit=' +place.formatted_address);
bindDataToForm(place.formatted_address,place.geometry.location.lat(),place.geometry.location.lng());
infowindow.setContent(place.formatted_address);
infowindow.open(map, marker);
});
// this function will work on marker move event into map
google.maps.event.addListener(marker, 'dragend', function() {
geocoder.geocode({'latLng': marker.getPosition()}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (results[0]) {
bindDataToForm(results[0].formatted_address,marker.getPosition().lat(),marker.getPosition().lng());
infowindow.setContent(results[0].formatted_address);
infowindow.open(map, marker);
}
}
});
});
}
function bindDataToForm(address,lat,lng){
document.getElementById('location').value = address;
document.getElementById('lat').value = lat;
document.getElementById('lng').value = lng;
alert('Edit'+lng);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<script>