SP.Social.SocialActor.accountName property (sp.userprofiles)
Gets the actor's account name. Applies to users.
Applies to: apps for SharePoint | Office 365 | SharePoint Foundation 2013 | SharePoint Server 2013
var value = SP.Social.SocialActor.get_accountName()
Return value
String
The account name of the user.
Remarks
The accountName property is valid only when the actorType is a user.