Trying to understand the events module in node js. Eventemitter

I am in need of an explanation of events and event emitters. I tried reading up on some tutorials but am confused. Please try to explain as If I was a 5 year old.

Take this code for example:

var EventEmitter = require("events").EventEmitter;

var ee = new EventEmitter();
ee.on("someEvent", function () {
    console.log("event has occured");
});

if(1==1) {
    ee.emit("someEvent");
}

What I am wondering about is why not just do this:

if(1==1) {
    console.log("event has occured");
}

What is the purpose of naming an event and emitting it(aka calling it). Why would you use an event emitter? Provide useful code so I understand it's use.

P.S :

Could you emit a number event? ee.emit(12); and call it ee.on(12, function () {console.log("yay?!")});