Software engineer at Hugging Face. Prototyping here with JS, d3, three.js.
// from https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/EventTarget#Examples
class MyEventTarget extends EventTarget {
constructor(mySecret) {
super();
this._secret = mySecret;
}
get secret() {
return this._secret;
}
}
myEventTarget = new MyEventTarget(5)
myEventTarget.addEventListener("foo", function(e) {
this._secret = e.detail;
})
{
const valueBefore = myEventTarget.secret; // == 5
myEventTarget.dispatchEvent(new CustomEvent("foo", { detail: 7 }));
const valueAfter = myEventTarget.secret; // == 7
return { valueBefore, valueAfter };
}
myEventTarget._eventListeners
result = {
const target = new MyEventTarget(6);
target.addEventListener(
"bar",
function(e) {
this._secret = e.detail;
},
{ once: true }
);
const valueBefore = target.secret; // == 6
target.dispatchEvent(new CustomEvent("bar", { detail: 8 }));
target.dispatchEvent(new CustomEvent("bar", { detail: 9 }));
const valueAfter = target.secret; // == 8
return { valueBefore, valueAfter, target };
}
result.target._eventListeners // empty
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