ArcGIS JavaScript API: How to retrieve the first FeatureLayer from WebScene?

Question

Hey everyone, I am currently pulling the FeatureLayer by its name and applying ElevationInfo onto it. map3D.when(function(){ // Retrieve FeatureLayer from WebScene var featureLayer3D = map3D.layers.find(function(layer){ return layer.title === "Env 09092018"; }); // Define elevationInfo and set it on the layer var currentElevationInfo = { mode: "absolute-height", offset: -20, unit: "meters" }; featureLayer3D.elevationInfo = currentElevationInfo; }); I was wondering is there a way to retrieve by calling the first FeatureLayer as opposed to calling by the name(Env 09092018) itself? Thanks in advance!

rscheitlin · Accepted Answer

James, Just use getItemAt(0). https://developers.arcgis.com/javascript/latest/api-reference/esri-core-Collection.html#getItemAt map3D.when(function(){ // Retrieve FeatureLayer from WebScene var featureLayer3D = map3D.layers.getItemAt(0); // Define elevationInfo and set it on the layer var currentElevationInfo = { mode: "absolute-height", offset: -20, unit: "meters" }; featureLayer3D.elevationInfo = currentElevationInfo; });‍‍‍‍‍‍‍‍‍‍‍‍‍