CustomEvent & Event

CustomEvent & Event

js 自定义事件

const event = new CustomEvent(typeArg, customEventInit);

// add an appropriate event listener
obj.addEventListener("cat", function(e) { process(e.detail) });

// create and dispatch the event
var event = new CustomEvent("cat", {
  detail: {
    hazcheeseburger: true
  }
});
obj.dispatchEvent(event);

// doc is a reference to the content document
function dispatchCustomEvent(doc) {
  var eventDetail = Components.utils.cloneInto({foo: 'bar'}, doc.defaultView);
  var myEvent = doc.defaultView.CustomEvent("mytype", eventDetail);
  doc.dispatchEvent(myEvent);
}

https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent

https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent

Event

const event = new Event('build');

// Listen for the event.
elem.addEventListener('build', function (e) { /* ... */ }, false);

// Dispatch the event.
elem.dispatchEvent(event);

https://developer.mozilla.org/en-US/docs/Web/Guide/Events/

https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Creating_and_triggering_events

postMessage

https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage

Event Emitter

refs

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