How to retrieve the users that are following a document using JSOM / REST APIs in SharePoint 2013

Question

Hi everyone,
Does anyone know how to use JSOM / REST APIs to retrieve the users that are following a specific document in SharePoint 2013? 
Thanks in advance,
Nam

Answer 1

Hi Nam,
Please use the sample code to get the followers for the document. Courtesy: Mokhtar
Bepari 
using Microsoft.SharePoint.Client;
using Microsoft.SharePoint.Client.Social;
ClientContext clientContext = new ClientContext("http://URL");
SocialFollowingManager followingManager = new SocialFollowingManager(clientContext);
SocialActorInfo actorInfo = new SocialActorInfo();
actorInfo.ContentUri = "<documenturl>"; //set the document url.
actorInfo.ActorType = SocialActorType.Document;
//By using the GetFollowed method you can get the people who the current user is following.
ClientResult < SocialActor[] > followedResult = followingManager.GetFollowed(SocialActorTypes.Users);
//By using the GetFollowers() method you can get the people who are following the current user.
ClientResult < SocialActor[] > followersResult = followingManager.GetFollowers();
clientContext.ExecuteQuery();
Once you get the resultset you can iterate like below:
foreach(SocialActor actor in followedResult)
string name = actor.Name;
string imageURL = actor.ImageUri;
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