Esri Basemaps
You can find the list of available basemap string identifiers for the ArcGIS Maps SDK for JavaScript in the official Esri documentation. This includes both 2D and 3D basemap IDs.
You can find the list of available basemap string identifiers for the ArcGIS Maps SDK for JavaScript in the official Esri documentation. This includes both 2D and 3D basemap IDs.
ArcGIS Ideas FAQ