Regular Expressions 101

^start of line

Character Class[\w-+]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

Non-Capturing Group(?:\.[\w-]+)*

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w'\-\s,#\\]*

*matches any number of characters from the set below:

\wany word character

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sany whitespace character

,the literal , (44₁₀ / 54₈ / 2C₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[A-Za-z]{2,3})

Character Class[A-Za-z]{2,3}

{2,3}matches between 2 and 3 characters 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)

$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

^[\w-+]+(?:\.[\w-]+)*@[\w-]+\.[\w'\-\s,#\\]*\.?(?:[A-Za-z]{2,3})$

New

steve@gmail.com.com.com
steve@gmail.com.nz
steve@gmail.com.co.nz
steve@gmail.comfooobar.co
steve@gmail.com
steve.foo@bar.baz