Check if Current Users belongs to SP group using javascript Client Side Object Model

Question

I havent found a specific example of how to get the current user and then check if it belongs to a specific sharepoint group, as I havent found anything I cant provide a cod

Answer 1

Here's a quicker way with SharePoint 2013:

function CheckCurrentUserMembership() {

    var clientContext = new SP.ClientContext.get_current();
    this.currentUser = clientContext.get_web().get_currentUser();
    clientContext.load(this.currentUser);

    this.userGroups = this.currentUser.get_groups();
    clientContext.load(this.userGroups);
    clientContext.executeQueryAsync(OnQuerySucceeded);
}

function OnQuerySucceeded() {
         var isMember = false;
         var groupsEnumerator = this.userGroups.getEnumerator();
          while (groupsEnumerator.moveNext()) {
             var group= groupsEnumerator.get_current();               
             if(group.get_title() == "Administrator Group") {
                 isMember = true;
                 break;
             }
          }

          OnResult(isMember);
}

function OnQueryFailed() {
          OnResult(false);
}