Dispatch Event from custom Element (VanillaJS).

[Revath S Kumar]

If I am creating a custom element with vanillaJS, How can I dispatch a custom event for my element. (something like a change event for select).

I tried

  Item.attachedCallback = function () {
    console.log('Attached');
    var evt = new CustomEvent('itemchanged');
    this.dispatchEvent(evt);
  }

 But when I tried to listen on the element, no luck.