Have seen un common css links was wondering if they are just errors?

Hello all.
I have run across a few link to css bit that were like

<link rel="stylesheet" href="style.css[COLOR="#B22222"]?cache=no[/COLOR]">


<link rel="stylesheet" href="style.css[COLOR="#B22222"]?v=1.0[/COLOR]">

(this was actually on a sitepoint page)

but was told that those type of endings fro the href links are incorrect. Do they work? are they passe?
thank you


They are used to create version numbers on css files so that a cached file is not read and is ideal for when developing a site. You just update the version number each time you make a change and the browser will fetch the new file. There could be an issue with [URL=“http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/”]proxy servers not caching any files using a query string.

Thank you Paul!
I guess then when you have the final version. you’d just use style.css w/out versioning.

Yes that’s the general idea. It’s mostly only while developing that you need a new version each time.