node api

customEvents.js

var EventEmitter = require('events').EventEmitter
,	util = require('util')
;

function Animal(){
	this.nose = 2;
	this.ear = 4;
}

util.inherits(Animal, EventEmitter);
Animal.prototype.show = function() {
	var obj = {
		name: 'pai',
		age: 21
	};
	
	console.log('let me show you something');
	this.emit('customEvent',obj);
};

var a = new Animal();
a.on('customEvent', function(x){
	console.log(x);
	console.log('I caught the custom event');
});


a.show();