Show Last Modified v3

A Greasemonkey script that shows the date of last modification where that is available

Information on the Web often does not state its date of origin (or modification). This way it is impossible to tell whether information presented online is valid today or was valid ten years ago. But, in many cases, the Javascript variable document.lastModified can help with that. So I wrote this script that works with Greasemonkey. (It has only been tested with Greasemonkey on Firefox. It might work with similar add-ons for other browsers as well.)

First install Greasemonkey, then click on the script link:

• felixrabe_lastmod_v4.user.js (29 Aug 2010) Changes: works on lwn.net too
• felixrabe_lastmod_v3.user.js (28 Aug 2010) Changes: readability; cross-browser rounded corners; provided under the terms of the MIT license (see source code)
• felixrabe_lastmod_v2.user.js (19 Aug 2010)

Screenshot of the script in action

Known issues

The script will not work on most sites, as the server just reports the current time for the documents. In these cases, the "Last Mod" tag will not be shown.

To some degree, the script is dependent on the sanity of a page's CSS stylesheet. It might display in funny ways on certain pages.

Kind regards,
- Felix Rabe