Hide Markers until specific zoom level is reached - Interactive Geo Maps

hide.js

let mapID = 955; // replace with your map ID
let zoomLevel = 3; // replace with the zoom level you want to show the labels at
let igmNow = Date.now();

function igmHideMarkers(igmap) {
    igmNow = Date.now();
    let series = iMaps.maps[mapID].series;
    series.forEach(function(serie) {
        if (typeof serie.mapImages === 'undefined') {
            return;
        }
        serie.mapImages.each(function(marker) {
            if (igmap.zoomLevel >= zoomLevel) {
                marker.show();
            } else {
                marker.hide();
            }
        });
    });

}
let mapContainer = document.getElementById('map_' + mapID);
mapContainer.addEventListener('mapready', function(ev) {
    let igmap = iMaps.maps[mapID].map;
    igmHideMarkers(igmap);
    igmap.events.on("zoomlevelchanged", function(ev) {
        if (Date.now() >= igmNow + 500) {
            igmHideMarkers(igmap);
        }
    });
});