fetchVectorBasemaps

Gets the collection of vector Basemap objects in the portal's vector basemap gallery group.

The portal's vector basemap gallery group is defined by the portal's administrator. It contains the basemaps that are displayed in the Map Viewer basemap gallery if a user logs in with an ArcGIS Online or ArcGIS Enterprise account and the PortalInfo.useVectorBasemaps value is true. Note that if the value of PortalInfo.useVectorBasemaps is false, the Map Viewer will display the basemap collection returned by Portal.fetchBasemaps and it's recommended that you use that collection instead.

The basemaps in this collection are not loaded, but you can access their PortalItem metadata from Basemap.item.

See also