# onReceive(_:perform:) Adds an action to perform when this view detects data emitted by the given publisher. ``` nonisolated func onReceive

(_ publisher: P, perform action: @escaping (P.Output) -> Void) -> some View where P : Publisher, P.Failure == Never ``` ## Parameters `publisher` The publisher to subscribe to. `action` The action to perform when an event is emitted by `publisher`. The event emitted by publisher is passed as a parameter to `action`. ## Return Value A view that triggers `action` when `publisher` emits an event. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)