regular expressions

[hisoka]

I would like to know a method or a good article or a book that helps me understand the meaning

of some regular expressions like these for example :

 

("^[^e-z0-9A-Z]+[^A-Z]{6}{?[a-z]*_?")

 

("^(x|y|l|n)+[^A-Za-df-qs-z]{5}{?[^vCXBhq]*[^pqrst]*[a]+[^index]*}?")

 

 

 

[justsomeguy]

This is probably the most well-known site:

 

http://www.regular-expressions.info

[hisoka]

thank you it was useful for me plus it helped find other sites like it . However I cannot find an explanation to this

 

^[^g-z0-9A-Z]

 

Could you please provide me with a string that match the regular expression above and explain to me what does two caret TOGETHER one inside outside the bracket do because I could not find an explanation in the internet?

[Ingolme]

The first caret refers to this: http://www.w3schools.com/jsref/jsref_regexp_ncaret.asp

The second caret refers to this: http://www.w3schools.com/jsref/jsref_regexp_not_0-9.asp

[hisoka]

Thank you