AbortSignal: abort event

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.

Note: This feature is available in Web Workers.

The abort event of the AbortSignal is fired when the associated request is aborted, i.e. using AbortController.abort().

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js
addEventListener('abort', (event) => { })

onabort = (event) => { }

Event type

A generic Event with no added properties.

Examples

In the following snippets, we create a new AbortController object, and get its AbortSignal (available using the signal property). Later on we check whether or not the signal has been aborted using an event handler property,

You can detect the abort event using an addEventListener method:

js
const controller = new AbortController();
const signal = controller.signal;

signal.addEventListener("abort", () => {
  console.log("Request aborted");
});

Or use the onabort event handler property:

js
const controller = new AbortController();
const signal = controller.signal;

signal.onabort = () => {
  console.log("Request aborted");
};

Specifications

Specification
DOM Standard
# eventdef-abortsignal-abort
DOM Standard
# abortsignal-onabort

Browser compatibility

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