`Object.create(null)` for JScript

nullobject.wsh.js

// `Object.create(null)` for JScript.
// Based on @bga_'s SafeJS.
NullObject = (function(){
  var doc = new ActiveXObject('htmlfile')
  doc.write('<script><\/script>')
  doc.close()
  var Obj = doc.parentWindow.Object
  if(!Obj || Obj === Object) return
  var name, names =
    [ 'constructor', 'hasOwnProperty', 'isPrototypeOf'
    , 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']
  while(name = names.pop()) if(!delete Obj.prototype[name]) return
  return Obj
}())

!function(){
  var toString = 1
  with(new NullObject) WSH.echo(toString)
}()