SP.Social.SocialThread.ownerIndex property (sp.userprofiles)
Gets the index of the thread's owner within the thread's actors.
Applies to: apps for SharePoint | Office 365 | SharePoint Foundation 2013 | SharePoint Server 2013
var value = SP.Social.SocialThread.get_ownerIndex()
Return value
Int32
The index of the thread's owner in the set of actors returned by the SocialThread.actors property.