Regular Expressions 101

Pro

Positive Lookahead(?=.*[a-fA-F]+)

.*any character (except for line terminators), repeated any number of times

Character Class[a-fA-F]+

+matches at least one character from the set below:

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

Positive Lookahead(?=.*[0-9]+)

.*any character (except for line terminators), repeated any number of times

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[a-zA-Z0-9]{10}

{10}matches exactly 10 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?=.*[a-fA-F]+)(?=.*[0-9]+)[a-zA-Z0-9]{10}

New

111111111a
7777dddddd
9999999999
88888888A
88888888AAA
88888A
AAAAAAAAA

asdfasddad
bnmmnbamnb
8adfl9542a
ammmmmmmmm
mammmmmmmm
0mmmmmmmmm
m0ammmmmmm
on5pn0nmon
qqqq55511s
11111a1111
11111111111

Extraction

111111111a
7777dddddd
9999999999
88888888A
88888888AAA
88888A
AAAAAAAAA

asdfasddad
bnmmnbamnb
8adfl9542a
ammmmmmmmm
mammmmmmmm
0mmmmmmmmm
m0ammmmmmm
on5pn0nmon
qqqq55511s
11111a1111
11111111111