How can I add an object property to the global object in rhino javascript

Question

I have some properties in an object that I would like to add to the global namespace. In javascript on the browser I could just add it to the window object like so:

var myObject = {
  foo : function() {
    alert("hi");
  }
  // and many more properties
};

for (property in myObject) {
  window[property] = myObject[property];
}

// now I can just call foo()
foo();

But since rhino doesn't have the global window object I can't do that. Is there an equivalent object or some other way to accomplish this?

Answer 1

I found a rather brilliant solution at NCZOnline:

function getGlobal(){
  return (function(){
    return this;
    }).call(null);
}

The key to this function is that the this object always points to the global object anytime you are using call() or apply() and pass in null as the first argument. Since a null scope is not valid, the interpreter inserts the global object. The function uses an inner function to assure that the scope is always correct.

Call using:

var glob = getGlobal();

glob will then return [object global] in Rhino.