Regular Expressions 101

^start of string

Character Class[\w]{1,}

{1,}matches at least one character from the set below:

\wany word character

Character Class[\w.+-]{0,}

{0,}matches any number of characters from the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Character Class[\w-]{2,}

{2,}matches at least 2 characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 1([.][a-zA-Z]{2,}|[.][\w-]{2,}[.][a-zA-Z]{2,})

1st Alternative[.][a-zA-Z]{2,}

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{2,}

{2,}matches at least 2 characters from the set below:

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

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

2nd Alternative[.][\w-]{2,}[.][a-zA-Z]{2,}

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]{2,}

{2,}matches at least 2 characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{2,}

{2,}matches at least 2 characters from the set below:

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

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

$end of string, or before its final line terminator

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[\w]{1,}[\w.+-]{0,}@[\w-]{2,}([.][a-zA-Z]{2,}|[.][\w-]{2,}[.][a-zA-Z]{2,})$

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