Event Emitter

var EventEmitter = require('events').EventEmitter; //this is included in node var util = require('util'); //this is included in node as well var myObject = function(){ EventEmitter.call(this); }; util.inherits(myObject, EventEmitter); myObject.prototype.doSomething = function(thing){ this.emit('something', thing); return this; //make your method chainable, for ease of use }; var obj = new myObject; obj.on('something', function(thing){ console.log(thing); }); obj.doSomething('eat').doSomething('sleep').doSomething('code');