Anfrage: signal-Eigenschaft

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2019.

Hinweis: Diese Funktion ist in Web Workers verfügbar.

Die schreibgeschützte signal-Eigenschaft der Request-Schnittstelle gibt das mit der Anfrage verknüpfte AbortSignal zurück.

Wert

Ein AbortSignal-Objekt.

Beispiele

js
// Create a new abort controller
const controller = new AbortController();

// Create a request with this controller's AbortSignal object
const req = new Request("/", { signal: controller.signal });

// Add an event handler logging a message in case of abort
req.signal.addEventListener("abort", () => {
  console.log("abort");
});

// In case of abort, log the AbortSignal reason, if any
fetch(req).catch(() => {
  if (req.signal.aborted) {
    if (req.signal.reason) {
      console.log(`Request aborted with reason: ${req.signal.reason}`);
    } else {
      console.log("Request aborted but no reason was given.");
    }
  } else {
    console.log("Request not aborted, but terminated abnormally.");
  }
});

// Actually abort the request
controller.abort();

Spezifikationen

Specification
Fetch Standard
# ref-for-dom-request-signal②

Browser-Kompatibilität

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