XMLHttpRequestEventTarget

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 inWeb Workers, except forService Workers.

XMLHttpRequestEventTarget is the interface that describes the event handlers shared onXMLHttpRequest andXMLHttpRequestUpload.

You don't useXMLHttpRequestEventTarget directly; instead you interact with the sub classes.

Events

The following events are made available toXMLHttpRequest andXMLHttpRequestUpload:

abort: Fired when a request has been aborted, for example because the program calledXMLHttpRequest.abort().Also available via theonabort event handler property.
error: Fired when the request encountered an error.Also available via theonerror event handler property.
load: Fired when a request transaction completes successfully.Also available via theonload event handler property.
loadend: Fired when a request has completed, whether successfully (afterload) or unsuccessfully (afterabort orerror).Also available via theonloadend event handler property.
loadstart: Fired when a request has started to load data.Also available via theonloadstart event handler property.
progress: Fired periodically when a request receives more data.Also available via theonprogress event handler property.
timeout: Fired when progress is terminated due to preset time expiring.Also available via theontimeout event handler property.