Node.js Events

Node.js operates on an event-driven architecture. This means the server spends most of its time waiting for specific events to happen, like a file opening or a user logging in. Developers can create their own custom events using the built-in Events module.

1/* this handles an event */
2var events = require('events');
3var eventEmitter = new events.EventEmitter();
4
5eventEmitter.on('login', function () {
6  console.log('User logged in!');
7});
8
9eventEmitter.emit('login');