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Asked: 2026-05-23T16:45:41+00:00

The following regular expression is workable using C# reg ex: ^(?<survey>#_surveyForm.+)|#(?:(?<url>http.+\.\w{3,4}).+_surveyForm=\w+)$ It matches string

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The following regular expression is workable using C# reg ex:

^(?<survey>#_surveyForm.+)|#(?:(?<url>http.+\.\w{3,4}).+_surveyForm=\w+)$

It matches string such as: 

#http://localhost/tableaux-p145717.htm=&_surveyForm=second

or

#_surveyForm=second

I used named capturing groups.

I know Javascript doesn’t take advantage of named capturing groups (instead it uses \1, \2, etc.). Besides the syntax is slightly different from the one above.

How can I make that reg ex javascript-compliant?

Thanks in advance,

R.

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1 Answer

  1. Editorial Team

    As you said, JavaScript doesn’t support named captures. You have to change those into “normal” capturing groups and refer to them by number instead of by name:

    /^(#_surveyForm.+)|#(?:(http.+\.\w{3,4}).+_surveyForm=\w+)$/

    You should also be aware that \w only matches ASCII alphanumerics in JavaScript whereas it matches Unicode alnums in .NET.

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