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docs: Clarify addEventListener return expectations #60625

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9 changes: 5 additions & 4 deletions doc/api/events.md
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Expand Up @@ -2077,14 +2077,15 @@ functions or objects with a `handleEvent` property whose value is a function.
In either case, the handler function is invoked with the `event` argument
passed to the `eventTarget.dispatchEvent()` function.

Async functions may be used as event listeners. If an async handler function
rejects, the rejection is captured and handled as described in
[`EventTarget` error handling][].
Event listeners may return promises, and async functions may be used as event
listeners. If a returned promise rejects or an async handler function rejects,
the rejection is captured and handled as described in [`EventTarget` error
handling][].

An error thrown by one handler function does not prevent the other handlers
from being invoked.

The return value of a handler function is ignored.
Other than promises, the return value of a handler function is ignored.

Handlers are always invoked in the order they were added.

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