Question

Am I doing something wrong or is this just not possible:

(function(namespace,undefined)
{
    //Private properties and methods
    var foo="bar";
    function test(){return foo;}

    //Public properties and methods
    namespace.foobar=foo+"123";
    namespace.showFoo=function(){return test();};
})(window.namespace=window.namespace || {});

Then I try to “extend” the above namespace and add a new method:

(function(namespace,undefined)
{
    //Public method
    namespace.sayGoodbye=function()
    {
        alert(namespace.foo);
        alert(namespace.bar);
        alert(test());
    }
})(window.namespace=window.namespace || {});

The alert shows undefined for the properties and throws an error for the test() method.

Thanks.

Answer 1

Why would you expect to have foo and bar available ? Those identifiers are never assigned to your namespace object anywhere.

Any variable that is declared with var is only available in the Function(-Context) of the current Activation/Variable Object. Same goes for function declarations, in your case, test(). Both these are only stored within the AO from the first anonymous function and are not stored within your namespace object. You would have to explicitly assign the values

namespace.foo = foo;
namespace.bar = "hello I am bar";