https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/currentSrc
HTMLImageElement: currentSrc property - Web APIs | MDN
The currentSrc read-only property of the HTMLImageElement interface indicates the URL of the image selected by the browser to load.
web apispropertymdn
https://bugzilla.mozilla.org/show_bug.cgi?id=1312594
1312594 - src/currentSrc is cleared when an error occurred
RESOLVED (jya-moz) in Core - Audio/Video: Playback. Last updated 2016-10-25.
srcclearederror
https://www.w3schools.com/TAGS/av_prop_currentsrc.asp
HTML Audio/Video DOM currentSrc Property
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
audio videohtmldomproperty