i` trying to the arcgis javascript basemap change.
two basemap is ohter coordinate map.
I tested as follows:
first map.destroy();
and new map object created.
It was changed to a different map.
But they did not work on an existing widget created.
How can you change to a different map coordinate system and connect the widgets again?
Have you tried just changing the map's spatial reference like:
map.spatialReference = new esri.SpatialReference({ wkid: 4326, latestWkid: 4326 })
Not even so.... how to change other coordinate basemap ??
I made this test in the past but some of the other widgets (measure e.t.c) facing problem after map destroy/creation.
May you can try to change the webmap creating the application, see this sample Fade effect using ArcGIS.com web maps | ArcGIS API for JavaScript 3.17
