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Editorial Team
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Asked: 2026-05-26T14:10:26+00:00

How can I style a anchor tag so that once the link is visited

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How can I style a anchor tag so that once the link is visited it will change to Red and append [Old] to the end of the link.

So how do I combine these two:

a:visited{
   color:Red
}
a:after{
   content:[Old]
}
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1 Answer

  1. Editorial Team

    This is a privacy issue. As browser can detect element styles, it can therefore know what sites did you visit. An right now JS can detect it for a very large number of links in very short time. So for security reasons modern browser’s ability to detect :visited class is severely cutted down.

    Read more about it on mozilla’s blog: http://blog.mozilla.com/security/2010/03/31/plugging-the-css-history-leak/

    Citation from Webkit changelog:

    http://support.apple.com/kb/HT4196

    Impact: A maliciously crafted website may be able to determine which
    sites a user has visited

    Description: A design issue exists in WebKit’s handling of the CSS
    :visited pseudo-class. A maliciously crafted website may be able to
    determine which sites a user has visited. This update limits the
    ability of web pages to style pages based on whether links are
    visited.

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