yaeti
Yet Another EventTarget Implementation.
The library exposes both the EventTarget interface and the Event interface.
Installation
$ npm install yaeti --save
Usage
var yaeti = require('yaeti');
// Custom class we want to make an EventTarget.
function Foo() {
// Call EventTarget constructor
yaeti.EventTarget.call(this);
}
// Inherit EventTarget prototype
Foo.prototype = Object.create(yaeti.EventTarget.prototype);
Foo.prototype.constructor = Foo;
// Create an instance.
var foo = new Foo();
function listener1() {
console.log('listener1');
}
function listener2() {
console.log('listener2');
}
foo.addEventListener('bar', listener1);
foo.addEventListener('bar', listener2);
foo.removeEventListener('bar', listener1);
var event = new yaeti.Event('bar');
foo.dispatchEvent(event);
// Output:
// => "listener2"
API
yaeti.EventTarget
interface
Implementation of the EventTarget interface.
ES5
function Foo() {
yaeti.EventTarget.call(this);
}
Foo.prototype = Object.create(yaeti.EventTarget.prototype);
Foo.prototype.constructor = Foo;
ES6
class Foo extends EventTarget () {
constructor () {
super();
}
}
The interface implements the addEventListener
, removeEventListener
and dispatchEvent
methods as defined by the W3C.
listeners
read-only property
Returns an object whose keys are configured event types (String) and whose values are an array of listeners (functions) for those event types.
yaeti.Event
interface
Implementation of the Event interface.
NOTE: Just useful in Node (the browser already exposes the native Event
interface).
var event = new yaeti.Event('bar');