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.


AbortController.signal Read only

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



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


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.

var controller = new AbortController();
var signal = controller.signal;

var downloadBtn = document.querySelector('.download');
var abortBtn = document.querySelector('.abort');

downloadBtn.addEventListener('click', fetchVideo);

abortBtn.addEventListener('click', function() {
  console.log('Download aborted');

function fetchVideo() {
  controller = new AbortController();  // Set new controller for this request.
  fetch(url, { signal }).then(function(response) {
  }).catch(function(e) {
   reports.textContent = 'Download error: ' + e.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 (DOM)
# interface-abortcontroller

Browser compatibility

BCD tables only load in the browser

See also