XMLHttpRequest: abort() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers, except for Service Workers.

The XMLHttpRequest.abort() method aborts the request if it has already been sent. When a request is aborted, its readyState is changed to XMLHttpRequest.UNSENT (0) and the request's status code is set to 0.

If the request is still in progress (its readyState is not XMLHttpRequest.DONE or XMLHttpRequest.UNSENT), a readystatechange event, abort, and a loadend event are dispatched, in that order. For synchronous requests, no events are dispatched and an error is thrown instead.

Syntax

js
abort()

Parameters

None.

Return value

None (undefined).

Examples

This example begins loading content from the MDN home page, then due to some condition, aborts the transfer by calling abort().

js
const xhr = new XMLHttpRequest();
const method = "GET";
const url = "https://developer.mozilla.org/";
xhr.open(method, url, true);

xhr.send();

if (OH_NOES_WE_NEED_TO_CANCEL_RIGHT_NOW_OR_ELSE) {
  xhr.abort();
}

Specifications

Specification
XMLHttpRequest
# the-abort()-method

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
abort

Legend

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Full support
Full support

See also