The AbortController interface represents a controller object that allows you to abort one or more Web requests as and when desired.

You can create a new AbortController object using the AbortController() constructor. Communicating with a DOM request is done using an AbortSignal object.



Creates a new AbortController object instance.

Instance properties

AbortController.signal Read only

Returns an AbortSignal object instance, which can be used to communicate with, or to abort, a DOM request.

Instance methods


Aborts a DOM request before it has completed. This is able to abort fetch requests, consumption of any response bodies, and streams.


Note: There are additional examples in the AbortSignal reference.

In the following snippet, we aim to download a video using the Fetch API.

We first create a controller using the AbortController() constructor, then grab a reference to its associated AbortSignal object using the AbortController.signal property.

When the fetch request is initiated, we pass in the AbortSignal as an option inside the request's options object (the {signal} below). This associates the signal and controller with the fetch request and allows us to abort it by calling AbortController.abort(), as seen below in the second event listener.


let controller;
const url = "video.mp4";

const downloadBtn = document.querySelector(".download");
const abortBtn = document.querySelector(".abort");

downloadBtn.addEventListener("click", fetchVideo);

abortBtn.addEventListener("click", () => {
  if (controller) {
    console.log("Download aborted");

function fetchVideo() {
  controller = new AbortController();
  const signal = controller.signal;
  fetch(url, { signal })
    .then((response) => {
      console.log("Download complete", response);
    .catch((err) => {
      console.error(`Download error: ${err.message}`);

Note: When abort() is called, the fetch() promise rejects with a DOMException named AbortError.

You can find a full working example on GitHub; you can also see it running live.


DOM Standard
# interface-abortcontroller

Browser compatibility

BCD tables only load in the browser

See also