(unknown charset) Is localStorage read and write-able offlne?

Is localStorage read and write-able offlne?

http://dev.w3.org/html5/webstorage/
admittedly only a skim-read, but could not find any reference?


testcase: https://bug506639.bugzilla.mozilla.org/attachment.cgi?id=390836

works in a local directory with cookies for Opera and Safari,
but Mozilla using localStorage requires the file to be online to be  
read or written to.
bug filed: https://bugzilla.mozilla.org/show_bug.cgi?id=507361

from a developer perspective this can be frustrating.
presumably users working offline might also expect to be able to read  
and write as per cookies...

best

~:"