Is there a way to Fix a Google Maps Marker to the Center of its Map always?

Question

To be more precise, what I try to accomplish is that while I Drag a Google Map there\'s a Google Maps Marker that stays fixed

Answer 1

Here is how to do it as smooth as possible, and you can also get latlng at the same time.

    var map;
    var marker;
    var myInterval = setInterval(move, 1000 / 60);


    function handleEvent(event) {
        var latlng = map.getCenter();
        document.getElementById('lat').value = latlng.lat();
        document.getElementById('lng').value = latlng.lng();
    }



    // Initialize and add the map
    function initMap() {
        var uluru = { lat: -25.344, lng: 131.036 };
        map = new google.maps.Map(
            document.getElementById('map'), { zoom: 4, center: uluru });
        marker = new google.maps.Marker({
            position: uluru,
            map: map,
            animation: google.maps.Animation.DROP
        });
        map.addListener('center_changed', handleEvent);
        document.getElementById('lat').value = "-25.344";
        document.getElementById('lng').value = "131.036";
    }


    function move(){
        try {
          var latlngMAP = map.getCenter();
          var latlngMARKER = marker.getPosition();
          tempLAT = lerp (latlngMARKER.lat(), latlngMAP.lat(), 0.1);
          tempLNG = lerp (latlngMARKER.lng(), latlngMAP.lng(), 0.1);
         var latlng = { lat: tempLAT, lng: tempLNG };
          marker.setPosition(latlng);
        } catch{
        }
    }
    function lerp(start, end, amt) {
         return (1-amt)*start+amt*end
    }