<script src="http://js.arcgis.com/3.9/"></script>
<script>
var map;
require(["esri/map", "dojo/domReady!"], function(Map) {
map = new Map("mapDiv", {
center: [-56.049, 38.485],
zoom: 3,
basemap: "streets",
nav: true
});
});
</script>