How do I to load map when page is already loaded? - asp.net-mvc

Question

I have a page where I need to load a Map by an address to see the property located at that point. To do this I found the Google Maps API but I cannot do this works yet. I'm trying an example that I saw on documentation but it still doesn't works and does not throws any exception.
Here de documentation.
How could I do this ?
Loading Google Maps API
<script src="https://maps.google.com/maps/api/js?key=AIzaSyA8JZPv2N9bE0OQABj6hKO9QZb0kH32l"></script>
Script to Load Map By Address
$(document).ready(function () {
initialize();
codeAddress();
});
var geocoder;
var map;
function initialize() {
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(-34.397, 150.644);
var mapOptions = {
zoom: 8,
center: latlng
}
map = new google.maps.Map(document.getElementById('gmap'), mapOptions);
}
function codeAddress() {
var address = document.getElementById('myAddress').value;
geocoder.geocode({ 'address': address }, function (results, status) {
if (status == 'OK') {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
} else {
alert('Geocode was not successful for the following reason: ' + status);
}
});
}
HTML
<div id="gmap"></div>
<!--my address-->
#Html.HiddenFor(model => model.myAddress)

Answer 1

I finally solved the problem.
function loadByAddress() {
var address = $('#myAddress').val();
var geocoder = new google.maps.Geocoder();
geocoder.geocode({ 'address': address }, function (results, status) {
if (status == 'OK') {
var latlng = new google.maps.LatLng(results[0].geometry.location.lat, results[0].geometry.location.lng);
var myOptions = {
zoom: 20,
center: latlng,
mapTypeId: google.maps.MapTypeId.SATELLITE
};
var map = new google.maps.Map(document.getElementById("gmap"), myOptions);
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
} else {
alert('Geocode was not successful for the following reason: ' + status);
}
});
}
google.maps.event.addDomListener(window, "load", loadByAddress);