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Editorial Team
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Asked: 2026-05-15T20:34:52+00:00

I am trying to come up with a JS regex that will include any

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I am trying to come up with a JS regex that will include any intranet site (with the simple definition of any host name that does not include .), but will exclude localhost.

I’ve got the first part: http(s)?\:\/\/[^\.\/]+(\/.*)*
I am struggling with the second part. Any help would be appreciated.

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1 Answer

  1. Editorial Team

    You need to use a negative lookahead:

    /^http(s)?\:\/\/(?!localhost[:\/])[^\.\/]+(\/.*)*$/
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