Answer by brianary for windows command line javascript

You are using the Windows Scripting Host.

You can say things like:

WScript.Echo("Hello, World.");

It's all COM-based, so you instantiate ActiveX controls to do anything useful:

var y = new ActiveXObject("Scripting.Dictionary");y.add ("a", "test");if (y.Exists("a"))   WScript.Echo("true");

Or:

var fso, f1;fso = new ActiveXObject("Scripting.FileSystemObject");// Get a File object to query.f1 = fso.GetFile("c:\\detlog.txt");   // Print information.Response.Write("File last modified: "+ f1.DateLastModified);

See Windows Script Host.