Regular Expressions 101

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Library entries

103
javascript

trim

trim string
Submitted by fp - 9 years ago
37
pcre

http://

no description available
Submitted by Mitus M. - 8 years ago
33
javascript

IP Address validator

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

ninite

no description available
Submitted by peek - 7 years ago
30
javascript

Email address (most used)

Email address, most used cases
Submitted by Jago - 7 years ago
27
pcre

Wrap long string to spec length

no description available
Submitted by fullpipe - 9 years ago
22
pcre

userName

1-15 alphanumeric login name
Submitted by gsanchezc - 7 years ago

Visa - 10/09/18

Vote

0

Regular Expression
javascript

/
\b(4[0-9]{3}[ -])([0-9]{4}[ -]){2}[0-9]\b|\b4[0-9][0-9]{11}\b|\b(4[0-9]{3}[ -])([0-9]{4}[ -]){2}(?:[0-9]{4})?$\b|\b4[0-9][0-9]{14}\b|\b(4[0-9]{3}[ -])([0-9]{4}[ -]){3}(?:[0-9]{3})?$\b|\b4[0-9][0-9]{17}\b
/
gm

Description

Loading markdown...
Submitted by anonymous - 4 years ago