Do you really need to require "dojo/on" to do this? Isn't that only necessary if you want to use the extra event handling methods (pause, once, etc.)?
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
<title>Simple Map</title>
<link rel="stylesheet" href="http://js.arcgis.com/3.12/esri/css/esri.css">
<style>
html, body, #map {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
body {
background-color: #FFF;
overflow: hidden;
font-family: "Trebuchet MS";
}
</style>
<script src="http://js.arcgis.com/3.12/"></script>
<script>
var map;
require(["esri/map", "dojo/domReady!"], function(Map) {
map = new Map("map", {
basemap: "topo",
center: [-122.45, 37.75], // longitude, latitude
zoom: 13
});
map.on("zoom-end", function (){
console.log("zoom finished!");
});
});
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>
