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Zach Leatherman

jQuery Bug: IE reports incorrect $.browser.version

October 18, 2008


This article is old and may contain information that is outdated, irrelevant, or—dare I say it—no longer accurate. Read with care!

Update: This is now fixed in jQuery.

I’ve witnessed installations of IE where the navigator.userAgent reported both MSIE 6.0 and MSIE 7.0 in the same string, when Internet Explorer 7 is the one that’s really installed. Turns out, this is problematic for jQuery version 1.2.6, as it parses the double version userAgent as Internet Explorer 6, which may cause problems with your code if you’re using $.browser.version.

You can monitor the jQuery bug in the bug tracker, or see the original research performed by Jamie Thompson. Here’s a better workaround that merges two different approaches used on Jamie’s page, which fixes $.browser.version instead of using $.browser.msie6. This is to be considered temporary until the next (fixed) version of jQuery comes out.

jQuery.browser.version = jQuery.browser.msie && /msie 7\.0/i.test(navigator.userAgent) ?
  "7.0" :
Zach’s ugly mug (his face)

Zach is a builder for the web with IndieWeb Avatar for https://www.netlify.comNetlify. He created the IndieWeb Avatar for https://www.11ty.devEleventy site generator and is still fixated on web fonts. His public speaking résumé includes talks in eight different countries at events like IndieWeb Avatar for Conf,btconf’s AvatarBeyond Tellerrand, IndieWeb Avatar for Conference,CSSConf’s AvatarCSSConf, and IndieWeb Avatar for https://www.whitehouse.govThe White House. He is an emeritus of IndieWeb Avatar for https://www.filamentgroup.comFilament Group, nejsconf’s AvatarNEJS CONF, and still helps out with nebraskajs’s AvatarNebraskaJS. Read more about Zach »

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3 Replies
    1. ege madra Disqus

      15 Sep 2009 at 02:07PM
      Very useful, thanks for sharing.
      1. Cool,thank you
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