JavaScript - Create New Folder through Javascript

var s = "C:/" +dirCreated[i];

sFolderPath = s;
var oShell = new ActiveXObject("Scripting.FileSystemObject");

  if (! oShell.FolderExists(sFolderPath) )
      oShell.CreateFolder(sFolderPath)
  else
       alert("THIS FOLDER ALREADY EXISTS")

OR you can do it like;

var oShell = new ActiveXObject("Scripting.FileSystemObject");

  if (! oShell.FolderExists("C:\Test") )
      oShell.CreateFolder("C:\Test")
  else
       alert("THIS FOLDER ALREADY EXISTS")

Go thr this link to know more about FileSystemObject (FSO) object model

http://www.yaldex.com/wjscript/sgProgrammingFileSystemObject.htm

Best Luck!!!!!!!!!!!!!!!!
Sujit.

function CreateFolder()
{
  var fso, fldr;
  fso = new ActiveXObject("Scripting.FileSystemObject");
  fldr = fso.CreateFolder("C:\\MyTest");
  Response.Write("Created folder: " + fldr.Name);
}