Regular Expressions 101

Character Class[a-zA-Z]+

+matches at least one character from the set below:

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

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

Negative Lookahead(?!.*[a-zA-Z]+)

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

Character Class[a-zA-Z]+

+matches at least one character from the set below:

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

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

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[a-zA-Z]+(?!.*[a-zA-Z]+)

New

/USERS/1/NOTEBOOKS/1/
/users/1/notebooks/1/
/users/1/notebooks/1
/users/1/notebooks/
/users/1/notebooks
/users/1/
/users/1
/users/
/users
/
/users/notebooks/