HashChangeEvent oldURL Property
When the hash has been changed, get the URL we navigated away from:
The result could be:
The oldURL property returns the URL of the document, before the hash (anchor part) was changed.
This is the URL that was navigated away from. To get the URL that was navigated to, use the newURL property.
This property is read-only.
Tip: To set or return the hash of a URL, use the location.hash property.
|Return Value:||A String, representing the URL that was navigated from|
event.oldURL is a DOM Level 4 (2015) feature.
It is supported in all modern browsers:
event.oldURL is not supported in Internet Explorer 11 (or earlier).