Regular Expressions 101

Pro

^start of line

Positive Lookahead(?=.*?[!#$])

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

Character Class[!#$]

!the literal ! (33₁₀ / 41₈ / 21₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

Positive Lookahead(?=.*?[A-Za-z])

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

Character Class[A-Za-z]

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

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

Positive Lookahead(?=.*?\d)

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

\da Unicode decimal digit

.{6,}any Unicode character (except for line terminators), repeated at least 6 times

$end of line

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

^(?=.*?[!#$])(?=.*?[A-Za-z])(?=.*?\d).{6,}$

New

abcdefg
1234567
abc1234
abc123$
#abcdef
ab#12
#123abc