regex101: JavaScript Match Workspace

^start of string

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

1st Alternative([\w-]+\.)+[\w-]+

Group 2([\w-]+\.)+

+repeats the group contents below at least once:

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-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Group 3([a-zA-Z]{1}|[\w-]{2,})

1st Alternative[a-zA-Z]{1}

Character Class[a-zA-Z]{1}

{1}matches one character 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,}

Character Class[\w-]{2,}

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

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Group 4((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|([\w-]+\.)+[a-zA-Z]{2,4})

1st Alternative(([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}

Group 5(([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}

{1}repeats the group contents below exactly 1 time:

Group 6([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])

1st Alternative[0-1]?[0-9]{1,2}

Character Class[0-1]?

?matches at most one character from the set below:

0-1one character from 0 (48₁₀) to 1 (49₁₀)

Character Class[0-9]{1,2}

{1,2}matches between 1 and 2 characters from the set below:

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

2nd Alternative25[0-5]

25the literal text 25

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

3rd Alternative2[0-4][0-9]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-4]

0-4one character from 0 (48₁₀) to 4 (52₁₀)

Character Class[0-9]

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 7([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])

1st Alternative[0-1]? [0-9]{1,2}

Character Class[0-1]?

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[0-9]{1,2}

2nd Alternative25[0-5]

3rd Alternative2[0-4][0-9]

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 8([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 9([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])

2nd Alternative([\w-]+\.)+[a-zA-Z]{2,4}

$end of string

Global pattern flags

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

Search reference

Regular Expression

^(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]? [0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|([\w-]+\.)+[a-zA-Z]{2,4})$

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Regular Expressions 101

Regular Expression

Extraction