(this._pointerEvent) {\n      $(this._element).on(EVENT_POINTERDOWN, event => start(event))\n      $(this._element).on(EVENT_POINTERUP, event => end(event))\n\n      this._element.classList.add(CLASS_NAME_POINTER_EVENT)\n    } else {\n      $(this._element).on(EVENT_TOUCHSTART, event => start(event))\n      $(this._element).on(EVENT_TOUCHMOVE, event => move(event))\n      $(this._element).on(EVENT_TOUCHEND, event => end(event))\n    }\n  }\n\n  _keydown(event) {\n    if (/input|textarea/i.test(event.target.tagName))...

(handlerKey.includes(namespace)) {\n      removeHandler(element, events, typeEvent, event.callable, event.delegationSelector)\n    }\n  }\n}\n\nfunction getTypeEvent(event) {\n  // allow to get the native events from namespaced events ('click.bs.button' --> 'click')\n  event = event.replace(stripNameRegex, '')\n  return customEvents[event] || event\n}\n\nconst EventHandler = {\n  on(element, event, handler, delegationFunction) {\n    addHandler(element, event, handler, delegationFunction, false)\n  },\n\n  one(element,...

### Evento `shutdown` { #shutdown-event }

Para adicionar uma função que deve ser executada quando a aplicação estiver encerrando, declare-a com o evento `"shutdown"`:

{* ../../docs_src/events/tutorial002_py310.py hl[6] *}

Aqui, a função de manipulador do evento `shutdown` escreverá uma linha de texto `"Application shutdown"` no arquivo `log.txt`.

/// info | Informação

### Evento `shutdown` { #shutdown-event }

Para añadir una función que debería ejecutarse cuando la aplicación se esté cerrando, declárala con el evento `"shutdown"`:

{* ../../docs_src/events/tutorial002_py310.py hl[6] *}

Aquí, la función manejadora del evento `shutdown` escribirá una línea de texto `"Application shutdown"` a un archivo `log.txt`.

/// info | Información

{* ../../docs_src/events/tutorial001_py310.py hl[8] *}

Bu durumda `startup` event handler fonksiyonu, "database" öğesini (sadece bir `dict`) bazı değerlerle başlatır.

Birden fazla event handler fonksiyonu ekleyebilirsiniz.

Ve tüm `startup` event handler’ları tamamlanmadan uygulamanız request almaya başlamaz.

### `shutdown` eventi { #shutdown-event }

# Eventos Enviados pelo Servidor (SSE) { #server-sent-events-sse }

Você pode transmitir dados para o cliente usando Server-Sent Events (SSE).

Isso é semelhante a [Stream de JSON Lines](stream-json-lines.md), mas usa o formato `text/event-stream`, que é suportado nativamente pelos navegadores com a [`EventSource` API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

/// info | Informação

Adicionado no FastAPI 0.135.0.

///

        // Create different implementations
        SearchLogEvent event1 = new TestSearchLogEvent("id1", 1L, "type1");
        SearchLogEvent event2 = new NullSearchLogEvent();
        SearchLogEvent event3 = new EmptySearchLogEvent();

        // Test polymorphic behavior
        SearchLogEvent[] events = { event1, event2, event3 };

        for (SearchLogEvent event : events) {
            // All methods should be callable without exceptions

# Server-Sent Events (SSE) { #server-sent-events-sse }

Puedes enviar datos en streaming al cliente usando **Server-Sent Events** (SSE).

Esto es similar a [Stream JSON Lines](stream-json-lines.md), pero usa el formato `text/event-stream`, que los navegadores soportan de forma nativa con la [`EventSource` API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

/// info | Información

Añadido en FastAPI 0.135.0.

///

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event { #shutdown-event }

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

Параметр `lifespan` приложения `FastAPI` принимает асинхронный менеджер контекста, поэтому мы можем передать ему наш новый асинхронный менеджер контекста `lifespan`.

{* ../../docs_src/events/tutorial003_py310.py hl[22] *}

## Альтернативные события (устаревшие) { #alternative-events-deprecated }

/// warning | Предупреждение