You play with Cordova, ArcGIS API for Javascript and want to deploy your app to Windows Phone ?

You will probably found this information useful : take care to import cordova api before ArcGIS API in your html head.

Esri fulfill dojo/has with an esri-phonegap tag and use it in esri/request to choose between dojo/io/script or dojo/xhr method.

When using dojo/io/script method, the request is blocked by Windows Runtime security policy :

APPHOST9601: "Can’t load remoteURI. An app can’t load remote web content in the local context."

read more : Features and restrictions by context (HTML) - Windows app development