EventTarget: EventTarget() constructor
The EventTarget()
constructor creates a new EventTarget
object instance.
Note: It is fairly rare to explicitly call this constructor. Most of the time, this constructor is used inside the constructor of an object extending the EventTarget
interface, using the super
keyword.
Syntax
js
new EventTarget()
Parameters
None.
Return value
A new instance of the EventTarget
object.
Examples
js
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", (e) => {
myEventTarget._secret = e.detail;
});
let event = new CustomEvent("foo", { detail: 7 });
myEventTarget.dispatchEvent(event);
let newValue = myEventTarget.secret; // === 7
Specifications
Specification |
---|
DOM Standard # ref-for-dom-eventtarget-eventtarget① |
Browser compatibility
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