SharePoint 2010: Create a folder in Javascript

Here is some simple Javascript to create a folder and a sub folder.


CreateFolder($scope, // success function(){ CreateFolder2($scope) } );

function CreateFolder($scope, success){
var clientContext;
    var oWebsite;
    var oList;
    var itemCreateInfo;

    clientContext = new SP.ClientContext.get_current();
    oWebsite = clientContext.get_web();
    oList = oWebsite.get_lists().getByTitle("Report");

    itemCreateInfo = new SP.ListItemCreationInformation();
    itemCreateInfo.set_underlyingObjectType(SP.FileSystemObjectType.folder);
    itemCreateInfo.set_leafName("Top Folder");
    this.oListItem = oList.addItem(itemCreateInfo);
    this.oListItem.update();

    clientContext.load(this.oListItem);
    clientContext.executeQueryAsync(
        Function.createDelegate(this, successHandler),
        Function.createDelegate(this, errorHandler)
    );

    function successHandler() {
       //alert('success');
  console.log("success");
  return success();
    }

    function errorHandler() {
      // alert('fail');
 return success();
    }
}

function CreateFolder2($scope){
var clientContext;
    var oWebsite;
    var oList;
    var itemCreateInfo;

    clientContext = new SP.ClientContext.get_current();
    oWebsite = clientContext.get_web();
    oList = oWebsite.get_lists().getByTitle("Report");

    itemCreateInfo = new SP.ListItemCreationInformation();
    itemCreateInfo.set_underlyingObjectType(SP.FileSystemObjectType.folder);
    itemCreateInfo.set_leafName("Top Folder/test2");
    this.oListItem = oList.addItem(itemCreateInfo);
    this.oListItem.update();

    clientContext.load(this.oListItem);
    clientContext.executeQueryAsync(
        Function.createDelegate(this, successHandler),
        Function.createDelegate(this, errorHandler)
    );

    function successHandler() {
       alert('success');
    }

    function errorHandler() {
      alert('fail');
    }
}