Please enable JavaScript to use regex101
/
^
r
e
g
e
x
[
\
-
_
]
?
1
0
1
$
/
i
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ular
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pressions
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(krishna)
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JavaScript
Substitution
Created 2014-07-10 04:20
1
Regular Expression
/
^
(
[
A
-
Za
-
z
]
[
0
-
9
]
(
\\
(
[
A
-
Za
-
z
]
+
\\
)
)(
\\
(
[
0
-
9
]
+
\\
)
)(
[
@|
\\
-
|'|/|
|.|
|
]
|
&
|
#
|
@
|
(|)
)*
)
/
Description
() invalid, (k) valid, (kr123) valid. only () is invalid
Submitted by
krishna