This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The aborted read-only property returns a Boolean that indicates whether the DOM request(s) the signal is communicating with is/are aborted (true) or not (false).


var isAborted = abortSignal.aborted;


A Boolean


In the following snippet, we create a new AbortController object, and get its AbortSignal (available in the signal property). Later on we check whether or not it the signal has been aborted using the aborted property, and send an appropriate log to the console.

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

// ...

signal.aborted ? console.log('Request has been aborted') : console.log('Request not aborted');


Specification Status Comment
The definition of 'onabort' in that specification.
Living Standard Initial definition

Browser compatibility

ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Chrome Full support 66Edge Full support 16Firefox Full support 57IE No support NoOpera Full support 53Safari Full support 11.1WebView Android Full support 66Chrome Android Full support 66Firefox Android Full support 57Opera Android Full support 47Safari iOS Full support 11.3Samsung Internet Android Full support 9.0


Full support
Full support
No support
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

See also