Edit in JSFiddle

var person = function () {
        // Private
        var name = "Robert";
        return {
                getName : function () {
                        return name;
                },
                setName : function (newName) {
                        name = newName;
                }
        };
}();
alert(person.name); // Undefined
alert(person.getName()); // "Robert"
person.setName("Robert Nyman");
alert(person.getName()); // "Robert Nyman"