EventTarget()

Baseline Widely available

This feature is well established and works across many devices and browser versions. Itâs been available across browsers since ÑÐµÐ½ÑÑÐ±ÑÑ 2020 Ð³..

EventTarget() ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¾Ñ ÑÐ¾Ð·Ð´Ð°ÑÑ Ð½Ð¾Ð²ÑÐ¹ EventTarget ÑÐºÐ·ÐµÐ¼Ð¿Ð»ÑÑ Ð¾Ð±ÑÐµÐºÑÐ°.

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var myEventTarget = new EventTarget();

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ÐÐ¾Ð·Ð²ÑÐ°ÑÐ°ÐµÐ¼ÑÐµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ

ÐÐºÐ·ÐµÐ¼Ð¿Ð»ÑÑ EventTarget Ð¾Ð±ÑÐµÐºÑÐ°.

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class MyEventTarget extends EventTarget {
  constructor(mySecret) {
    super();
    this._secret = mySecret;
  }

  get secret() {
    return this._secret;
  }
}

let myEventTarget = new MyEventTarget(5);
let value = myEventTarget.secret; // == 5
myEventTarget.addEventListener("foo", function (e) {
  this._secret = e.detail;
});

let event = new CustomEvent("foo", { detail: 7 });
myEventTarget.dispatchEvent(event);
let newValue = myEventTarget.secret; // == 7