Is it possible to create custom events?

[DanMacLeod]

Is it possible to create a custom event and catch it? I tried the code below and the event doesn't seem to get fired.

let event = new Event("hello");
document.body.dispatchEvent(event);
...

document.addEventListener("hello", () => {
console.log("CAUGHT EVENT");
});

[JonFitbit]

Yes, it should be possible to use dispatchEvent. There's no body element though.

[NKRVVI]

Can you provide a minimal example of custom events please?