> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt # Method name: onWixEventCanceled(event: CanceledWixEvent) # Method package: wixEventsBackend # Method menu location: wixEventsBackend --> Events --> onWixEventCanceled # Method Link: https://dev.wix.com/docs/velo/apis/wix-events-backend/events/on-wix-event-canceled.md # Method Description: A backend event that fires when a Wix event is canceled. The `onEventCanceled()` event handler runs when an existing Wix event is canceled. The received `CanceledEvent` object contains information about the event that was canceled. > **Note:** Backend events are **not** fired when previewing your site. # Method Code Examples: *** Note: do not assume any prop names or enum values other than the ones in the example. ## A backend event that occurs when an existing Wix event is canceled ```javascript // Place this code in the events.js file // of your site's Backend section. // Add the file if it doesn't exist. export function wixEvents_onEventCanceled(event) { let eventId = event.eventId; let title = event.title; } /* Full event object: * { * "timestamp": "2020-04-26T13:57:50.699Z", * "eventId": "46dc2337-d725-4f7e-a0ae-a94a9a1f0c0b", * "title": "My event", * "userId": "01cb99e2-e969-421a-b65f-43bea2a66fa1" * } */ ``` ---