Regular Expressions 101

Pro

^start of line

ythe literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

Group 1(\d)

\da digit

Character Class[A-Za-z\s\.]?

?matches at most one character from the set below:

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

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

\sany whitespace character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

$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

^y(\d)[A-Za-z\s\.]?$

New

y0
y1
y2
y3
y4
y5
y6
y7
y8
y9
y11
y23
y345
y1 
y7a