"My Content" files

[RickThomas]

Is it possible to add layers to a javascript API from the "My Content" files I have stored on ArcGIS Online?

[KellyHutchins]

You can use esri.arcgis.utils.createwebmap to add an arcgis online web map to your JavaScript app. This sample shows how this works.
http://help.arcgis.com/en/webapi/javascript/arcgis/help/jssamples_start.htm#jssamples/ags_fullmaplay...