Google maps javascript APIs V3 snippets

GoogleMaps-jsAPI-V3.js

// GOOGLE MAPS JS API V3

//creates a google map in #mapCanvas DOM element
var coordinates = {
    lat: 15.1564541,
    lng: 9.456456
}
function createMap(coordinates) {
    //google map
    var mapOptions = {
        scrollwheel: false,    //disable zoom on mouse wheel
        zoom: 13,
        center: coordinates,
        disableDefaultUI: true,
    };
    var map = new google.maps.Map(document.getElementById('mapCanvas'), mapOptions);
    return map;
}


//creates a marker on the map
function setMarker(coordinates, map) {
    var marker = new google.maps.Marker({
        position: coordinates,
        map: map,         //map object
        icon: {
            url:'/images/icons/markers/marker-1.png',
            size: new google.maps.Size(50, 50),
        },
        title: 'Marker title',
        draggable: true         //makes the marker draggable on the map
    });
}
//if a marker is draggable, adds a listener to get its coordinates
google.maps.event.addListener(marker, 'dragend', function(event) {
    var markerCoordinates = {
        lat: event.latLng.lat(),
        lng: event.latLng.lng()
    }
    //use markerCoordinates to do your stuff...
});


//creates an info window on the map
//and add an event listener to open it on click on a specific marker
function setInfoWindow(map, marker, infoText) {
    var infowindow = new google.maps.InfoWindow({
        content: infoText,
    });
    google.maps.event.addListener(marker, 'click', function() {
        infowindow.open(map, marker);
    });
}