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XMLHttpRequestEventTarget - Web APIs | MDN
The following events are made available to XMLHttpRequestXMLHttpRequestUpload
abort
Fired when a request has been aborted, for example because the program called XMLHttpRequest.abort()onabort event handler property.
error
Fired when the request encountered an error.
Also available via the onerror event handler property.
load
Fired when a request transaction completes successfully.
Also available via the onload event handler property.
loadend
Fired when a request has completed, whether successfully (after loadaborterroronloadend event handler property.
loadstart
Fired when a request has started to load data.
Also available via the onloadstart event handler property.
progress
Fired periodically when a request receives more data.
Also available via the onprogress event handler property.
timeout
Fired when progress is terminated due to preset time expiring.
Also available via the ontimeout event handler property.
