The other way to do it is in the code. You can set up watches on different properties
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>Get started with SceneView - Create a 3D map - 4.1</title>
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>
<link rel="stylesheet" href="https://js.arcgis.com/4.1/esri/css/main.css">
<script src="https://js.arcgis.com/4.1/"></script>
<script>
require([
"esri/Map",
"esri/views/SceneView",
"dojo/domReady!"
], function(Map, SceneView) {
var map = new Map({
basemap: "streets",
ground: "world-elevation"
});
var view = new SceneView({
container: "viewDiv",
map: map,
scale: 50000000,
center: [-101.17, 21.78]
});
view.watch('camera.tilt', function(newValue, oldValue, property, object) {
console.log(property , newValue);
});
});
</script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>
Take a look at the Watching Properties section: Working with properties | ArcGIS API for JavaScript 4.1