What is the difference between addListener(event, listener) and on(event, listener) method in node.js? -

here cannot understand basic difference between these 2 methods.

var events = require('events'); var eventemitter = new events.eventemitter();    var listner1 = function listner1() {     console.log('listner1 executed.'); }  var listner2 = function listner2() {     console.log('listner2 executed.');     }  eventemitter.addlistener('connection', listner1);  eventemitter.on('connection', listner2);  eventemitter.emit('connection'); 

.on() same .addlistener() in eventemitter object.

straight eventemitter source code:

eventemitter.prototype.on = eventemitter.prototype.addlistener; 

sleuthing through github repository, there this checkin jul 3, 2010 contains comment: "experimental: 'on' alias 'addlistener'".

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update in 2017: documentation eventemitter.prototype.addlistener() says this:

alias emitter.on(eventname, listener).