!(function() {

            var obj = {},
                initVal = "Jim",
                foo = document.getElementById("foo"),
                change = document.getElementById("change"),
                input = document.getElementById("input");

                foo.innerHTML = initVal;

                input.addEventListener("keyup", function() {
                    obj.name = this.value;
                });

                change.addEventListener("click", function(e) {
                    obj.name = "Joe";
                });

                Object.defineProperty(obj, "name", {
                    "get": function() {
                        console.log("get name");
                        return initVal;
                    },
                    "set": function(val) {
                        console.log("set name  to " + val);
                        initVal = val;
                        foo.innerHTML = initVal;
                    }
                });
        })();