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Editorial Team
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Asked: 2026-05-16T06:16:43+00:00

I have seen on various websites how developers version their css/javascripts files by specifying

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I have seen on various websites how developers version their css/javascripts files by specifying querystrings similar to:

<head>
    <link rel="stylesheet" href="css/style.css?v=1">
    <script src="js/helper.js?v=1">
</head>

How is that done? Is it a good practice? I’ve been searching around but apparently, I’m not looking for the right terms. If it matters, I’m using ASP.NET.

Edit:: I just noticed (via Firebug) that if I “version” my files (?v=1) they will always be loading and will always override the cache. Is there a way around that?

Thanks in advance.

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1 Answer

  1. Editorial Team

    They’re not really versioned. We do that because certain browsers won’t always request the stylesheets properly (they won’t even check for a last modified) so to force them to make a new request, you can bump the number in your html file that references it. It’s kind of a hack, but it works.

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