Convert c# regex to javascript regex

Question

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.

Tim Pietzcker · Accepted Answer · 2011-07-11 10:50:05Z

4

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.

answered Jul 11, 2011 at 10:50

Tim Pietzcker

337k59 gold badges520 silver badges572 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Qtax · Accepted Answer · 2011-07-11 10:49:15Z

0

You could use something like:

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

Your URL will be in first capturing group, and the survey in the second.

This expression would probably work better for you:

/^#(https?:\/\/\S*)?\b_surveyForm=(\w+)$/

answered Jul 11, 2011 at 10:49

Qtax

34k9 gold badges92 silver badges127 bronze badges

Collectives™ on Stack Overflow

Convert c# regex to javascript regex

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related