(TMap.GetResolution Method)
Returns the resolution of the current map view.
GetResolution():Number
<div id="mapContainer"  style="width: 640px; height: 400px;"></div>
<script type="text/javascript">
    var map0 = new TMap(mapContainer, 25.7590256665386, -80.3738769902151, 15, mapInit, 1, true, "", "hybrid");
    var level=map0.GetResolution()
    
</script>