I've created an ArcGIS map on my local ArcGIS map server using ArcMap desktop and I am able to open up the map from "View In: ArcGIS Online map viewer". When viewing the map, the url is something like:
www.arcgis.com/home/webmap/viewer.html?url=http%3A%2F%2Flocalhost%3A(...etc) --> simply the local url pointing to the map on my local rest service.
Can I modify this map using JS from here? How should I access this map and what is the map id in this case or do we even need it?
Also when I do