The XMLHttpRequestEventTarget.onabort is the function called when an XMLHttpRequest transaction is aborted, such as when the XMLHttpRequest.abort() function is called.


XMLHttpRequest.onabort = callback;


  • callback is the function to be executed when the transaction is aborted.


var xmlhttp = new XMLHttpRequest(),
  method = 'GET',
  url = 'https://developer.mozilla.org/';

xmlhttp.open(method, url, true);
xmlhttp.onabort = function () {
  console.log('** The request was aborted');
xmlhttp.abort(); // This will invoke our onabort handler above


Specification Status Comment
XMLHttpRequest Living Standard WHATWG living standard

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support 1 (Yes) 1.0 (1.7 or earlier) 7 (Yes) 1.2
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 1.0 (Yes) (Yes) ? ? ?


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 Contributors to this page: erikadoyle, blainesch, teoli, rolfedh, Sheppy
 Last updated by: erikadoyle,