Regular Expression for CultureInfo

What is the regular expression for en-NZ for the CultureInfo, is it /{2, [a-z]}-{2, [A-Z]} ?

I also need for the expression to check for Turkey, which is two lower case lette开发者_运维技巧rs. For example 'tr' which is the only language code with two letters.

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Try this:

/\b[a-z]{2,3}(?:-[A-Z]{2,3}(?:-(?:Cyrl|Latn))?)?\b/

Explanation:

\b               # word boundary
[a-z]{2,3}       # 2-3 lowercase letters
(?:              # Try to match the following:
 -[A-Z]{2,3}     #  dash, 2-3 uppercase letters
 (?:             #  Try to match...
  -              #   dash
  (?:Cyrl|Latn)  #   Cyrl or Latn
 )?              #  optionally
)?               # optionally
\b               # word boundary

This matches all of these valid CultureInfo codes:

tr
tr-TR
syr
sr-SP-Latn
kok-IN
zh-CHT

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Not sure exactly what your asking so here is a very good regex generation site.

http://www.txt2re.com/

Hope this helps.

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If what you're looking for is a regex that finds two lowercase letters, followed by a dash, followed by two uppercase letters, then use:

[a-z]{2}-[A-Z]{2}

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This may work.

/([a-z]{2}-[A-Z]{2}|[a-z]{2})/

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Normal regex syntax would be

[a-z]{2}-[A-Z]{2}

but the problem with this is that it will also match en-AU (ugh, the horrors of it...), en-GB, en-US, fr-FR, etc.

What you can use instead to search for that specific value is this:

var re = /en-NZ/;

Here is the W3C tutorial on Javascript regexes, and this page also has a javascript regex tester (select the Client-side Engine in the top dropdown, and the JavaScript engine in the dropdown at the bottom of the page).