Prototype inheritance example

gistfile1.js

var util = require("util");

var A =function() {
	// constructor
}

A.prototype.on = function() {
	console.log('Call A: ON');
};

var B = function() {
	// constructor
}

util.inherits(B,A);

B.prototype.on = function() {
	console.log('Call B: ON');
	A.prototype.on.call(this);
};

var TestInstance = new B();

TestInstance.on('foo');