[Moo] Properties of Class do not own their properties (hasOwnProperty)

[woomla]

Running the code below shows that class TFalse.val.hasOwnProperty('a')
=== false.
Why is that? Can I not use hasOwnProperty?

e.q. URI.schemes does not own its properties http, https etc.
It seems that property options does own its properties.

Should I use hasOwnProperty in this case? I use it in this way:
for (key in this.val)
{
    if (this.val.hasOwnProperty(key))
    {
        //do something with this.val[key]
    }
}




code:

    var TFalse, TTrue;

    TFalse = new Class(
    {
      val:
      {
        a: 0
      },
      initialize: function ()
      {
        console.log(this.val.hasOwnProperty('a'));
      }
    });