<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<head>
<style type="text/css">
#map{ width:300px; height: 300px; }
</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>
//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);
