I feel that this question will unfortunately be vague, and I will update as more information is provided, but I unfortunately don't know that to look up to begin studying what I'm seeing in this code snippet.
function Events() {
this.events = { };
}The snippet above is what I'm focused on, but below I will post more of the original script for context:
var events = new Events();
events.add = function(obj) {
obj.events = { };
}
events.implement = function(fn) {
fn.prototype = Object.create(Events.prototype);
}
function Events() {
this.events = { };
}
Events.prototype.on = function(name, fn) {
var events = this.events[name];
if (events == undefined) {
this.events[name] = [ fn ];
this.emit('event:on', fn);
} else {
if (events.indexOf(fn) == -1) {
events.push(fn);
this.emit('event:on', fn);
}
}
return this;
}
Events.prototype.once = function(name, fn) {
var events = this.events[name];
fn.once = true;
if (!events) {
this.events[name] = [ fn ];
this.emit('event:once', fn);
} else {
if (events.indexOf(fn) == -1) {
events.push(fn);
this.emit('event:once', fn);
}
}
return this;
}
Events.prototype.emit = function(name, args) {
var events = this.events[name];
if (events) {
var i = events.length;
while(i--) {
if (events[i]) {
events[i].call(this, args);
if (events[i].once) {
delete events[i];
}
}
}
}
return this;
}
Events.prototype.unbind = function(name, fn) {
if (name) {
var events = this.events[name];
if (events) {
if (fn) {
var i = events.indexOf(fn);
if (i != -1) {
delete events[i];
}
} else {
delete this.events[name];
}
}
} else {
delete this.events;
this.events = { };
}
return this;
}If I had to guess, the way this looks is similar to how creating a class works, but I'm not following what use case doing this has or how to utilize it (in truth I don't understand it at all). I usually prefer to research these things on my own, but I'm not even sure where to start. Even a simple point in the right direction would be much appreciated.
