Regular Expressions 101

^start of line

Positive Lookahead(?=.{8,16}$)

.{8,16}any character (except for line terminators), repeated between 8 and 16 times

$end of line

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

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

Character Class[a-z]

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

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

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

Character Class[A-Z]

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

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

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

Character Class[0-9]

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

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

Search reference

Regular Expression

^(?=.{8,16}$)(?=.*?[a-z])(?=.*?[A-Z])(?=.*?[0-9]).*$

New

hsdhsh0A
hsdhshuA
hsdhshuAhsdhsh8A
hsdhshuAhsdhsh8Aoi