eeTest2.js

'use strict';
 
/**
 * http://book.mixu.net/node/ch9.html
 *
 * Created by ora on 27.03.14.
 */
 
var SimpleEE = function () {
   this.events = {};
};
SimpleEE.prototype.on = function (eventname, callback) {
   this.events[eventname] || (this.events[eventname] = []);
   this.events[eventname].push(callback);
};
SimpleEE.prototype.emit = function (eventname) {
   var args = Array.prototype.slice.call(arguments, 1);
   if (this.events[eventname]) {
       this.events[eventname].forEach(function (callback) {
           callback.apply(this, args);
       });
   }
};
 
describe('Test EventEmitter', function () {
   describe('Call ee', function () {
       it('should pass ee callback', function () {
 
 
           // Example using the event emitter
           var emitter = new SimpleEE();
           emitter.on('greet', function (name) {
               console.log('Hello, ' + name + '!');
           });
           emitter.on('greet', function (name) {
               console.log('World, ' + name + '!');
           });
           ['foo', 'bar', 'baz'].forEach(function (name) {
               emitter.emit('greet', name);
           });
 
 
       });
 
   });
});