Code flow example of the EventEmitter

gistfile1.js

// create EventEmitter instance
var myEventEmitter = new EventEmitter();

// add event listener for "test"
myEventEmitter.on('test', function ()
    console.log('2');
});

// the following code will output 1 2 3
console.log('1');
myEventEmitter.emit('test');
console.log('3');