[html5] document.lastModified clarification
Jukka K. Korpela
jukka.k.korpela at kolumbus.fi
Wed Sep 3 03:41:47 PDT 2014
2014-08-29 6:55, Ken Koski kirjoitti:
> According to
> if the date and time are not known, "the attribute must return the
> current date and time". Does current in this case mean the timestamp
> for when the document was retrieved, or does it mean that
> document.lastModified is equivalent to "new Date()" whenever the
> attribute is accessed?
The natural interpretation is the latter, since "current" refers to the
moment at hand.
> It appears that Firefox uses the first meaning and Chrome uses the
> latter meaning.
How did you test this? With a server that does not send a Last-Modified
header? Or with a local file? Testing with a local file, I observed that
Firefox and IE return the last modification time of the file on disk,
whereas Chrome returns the current time (of referring to
document.lastModified). I think the latter is wrong:
source file's last modification date and time must be derived from
relevant features of the networking protocols used, e.g. from the value
of the HTTP|Last-Modified
of the document, or from metadata in the file system for local files."
Thus, a note a little earlier, saying "Returns the date of the last
modification to the document, as reported by the server" is misleading.
I think it should minimally have "e.g." after the comma.
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