Create Document Sets with Javascript COM - Sharepoint 2010

Question

I am trying to work out if it's possible to create Document Sets in a list using the Javascript COM.
If it is possible does anyone have an example of how to do it. I am using Sharepoint 2010.
Many thanks.

Answer 1

Hi,
after long seeking I found this solution:
SPController.prototype.createTestDocumentSet = function(){
        if(this.clientContext === null) {
alert("Share Point couldn't be loaded.");
return false;
        var item = null;
        var oList = this.clientContext.get_web().get_lists().getByTitle('ListName');
        this.clientContext.load(oList);
        var itemCreateInfo = new SP.ListItemCreationInformation();
        itemCreateInfo.set_underlyingObjectType(SP.FileSystemObjectType.folder);
        itemCreateInfo.set_leafName('Haliluja Doc Set');
        item = oList.addItem(itemCreateInfo);
item.set_item("ContentTypeId", "0x0120D520");
        //item.set_item('ContentType', 'Document Set');
        item.set_item('Title', 'Haliluja Doc Set');
        item.update();
        this.clientContext.load(item);
        this.clientContext.executeQueryAsync(function(){console.log("doc set created!");}, function(sender,args){console.log("keep working... "+args.get_message());});