Regular Expressions 101

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Library entries

102
javascript

trim

trim string
Submitted by fp - 9 years ago
35
javascript

IP Address validator

Validates IPv4 IP Address
Submitted by krzysp - 7 years ago
31
javascript

Email address (most used)

Email address, most used cases
Submitted by Jago - 7 years ago
17
javascript

http url regex

general purpose HTTP URL regex
Submitted by Miguel Castillo @manchagnu - 7 years ago
15
javascript

Hashtag

The secret of the Twitterverse.
Submitted by Joogl - 8 years ago
14
javascript

Email (RFC2822)

Email address compliant with RFC2822
Submitted by Jago - 7 years ago
13
javascript

us postal/zip

no description available
Submitted by jay johnson - 9 years ago
12
javascript

Username with "_" "-"

no description available
Submitted by Gianvy - 7 years ago
12
javascript

US Currency Format

no description available
Submitted by anonymous - 7 years ago

IPv6 CIDR Validator

Vote

1

Regular Expression
javascript

/
(?:(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}(?![:.\w]))(([0-9A-F]{1,4}:){0,5}|:)((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)|(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}|(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}(?![:.\w]))(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)|(?:[A-F0-9]{1,4}:){7}:|:(:[A-F0-9]{1,4}){7})(?![:.\w])\/(?:12[0-8]|1[01][0-9]|[1-9]?[0-9])
/
gmi

Description

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Submitted by anonymous - 4 months ago