Regular Expressions 101

^start of line

Group 1([\w\d._\-#])+

+repeats the group contents below at least once:

Character Class[\w\d._\-#]

\wany word character

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Group 2([\w\d._\-#]+[.][\w\d._\-#]+)+

+repeats the group contents below at least once:

Character Class[\w\d._\-#]+

+matches at least one character from the set below:

\wany word character

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w\d._\-#]+

+matches at least one character from the set below:

\wany word character

\da digit

.the literal . (46₁₀ / 56₈ / 2E₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

$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\d._\-#])+@([\w\d._\-#]+[.][\w\d._\-#]+)+$

New

msekhar@yahoo.com
msekhar@cs.aau.edu
ms.sekhar@yahoo.com
ms_sekhar@yahoo.com
msekhar@cs2.aau.edu
msekhar@autobots.ai
msekhar@interior.homeland1.myanmar.mm
msekhar1922@yahoo.com
msekhar#21@autobots.com
\u001\u002@autobots.com
test tes @abcv.coa
test.com@.com
aas
@test.xy
test.com@abc

test-xy@gmail.c

Regular Expression

Substitution