Baseline 2024
Newly available
Note: This feature is available in Web Workers.
The AbortSignal.timeout() static method returns an AbortSignal that will automatically abort after a specified time.
The signal aborts with a TimeoutError DOMException on timeout.
The timeout is based on active rather than elapsed time, and will effectively be paused if the code is running in a suspended worker, or while the document is in a back-forward cache ("bfcache").
To combine multiple signals, you can use AbortSignal.any(), for example, to directly abort a download using either a timeout signal or by calling AbortController.abort().
AbortSignal.timeout(time)
time
The "active" time in milliseconds before the returned AbortSignal will abort. The value must be within range of 0 and Number.MAX_SAFE_INTEGER.
An AbortSignal.
The signal will abort with its AbortSignal.reason property set to a TimeoutError DOMException on timeout, or an AbortError DOMException if the operation was user-triggered.
Below is an example showing a fetch operation that will timeout if unsuccessful after 5 seconds. Note that this may also fail if the method is not supported, if a browser "stop" button is pressed, or for another reason.
const url = "https://path_to_large_file.mp4";
try {
const res = await fetch(url, { signal: AbortSignal.timeout(5000) });
const result = await res.blob();
// â¦
} catch (err) {
if (err.name === "TimeoutError") {
// This exception is from the abort signal
console.error("Timeout: It took more than 5 seconds to get the result!");
} else if (err.name === "AbortError") {
// This exception is from the fetch itself
console.error(
"Fetch aborted by user action (browser stop button, closing tab, etc.",
);
} else if (err.name === "TypeError") {
console.error("AbortSignal.timeout() method is not supported");
} else {
// A network error, or some other problem.
console.error(`Error: type: ${err.name}, message: ${err.message}`);
}
}
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