561.js

gistfile1.js

document.writeln("\nspike");
document.writeln("2012.11.27");

var Gadget = function () {};
Gadget.isShiny = function () {
	return "you bet";
};

Gadget.prototype.setPrice = function(price) {
	this.price = price;
};

var iphone = new Gadget();
iphone.setPrice(500);

document.writeln(typeof Gadget.setPrice);
document.writeln(typeof iphone.isShiny);

Gadget.prototype.isShiny = Gadget.isShiny;
document.writeln(iphone.isShiny());

var Gadget = function(price) {
	this.price = price;
};

Gadget.isShiny = function () {
	var msg = "you bet";
	
	if (this instanceof Gadget) {
		msg += ", it costs $" + this.price + '!';
	}
	return msg;
};

Gadget.prototype.isShiny = function() {
	return Gadget.isShiny.call(this);
};

document.writeln(Gadget.isShiny());

var a = new Gadget('499.99');
document.writeln(a.isShiny());