gistfile1.js

Playing with some code to understand overriding.

This works:

function Foo() {}
Foo.prototype = {
    bar : function() {
        console.log("original bar");
    }
}

   var originalBar = Foo.prototype.bar;

    Foo.prototype = {
        bar : function() {
            originalBar.apply(this, arguments);
            console.log("new bar");
        }
    }

new Foo().bar();

> original bar
> new bar

But I don't want 'originalBar' to be exposed so I try to use the proxy pattern:

(function() {
  var originalBar = Foo.prototype.bar;

   Foo.prototype = {
       bar : function() {
           originalBar.apply(this, arguments);
           console.log("new bar");
       }
   }
})();

new Foo().bar();
> TypeError: ({bar:(function () {console.log("original bar");})}) is not a function

Any ideas?