RegexPlanet
Testing
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Support
XRegExp Regular Expression Test Page
XRegExp Syntax
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Expression to test
Regular Expression
Replacement
Options
Help
Named capture only (
n
)
Dot matches all (singleline) (
s
)
Free-spacing and line comments (extended) (
x
)
21-bit Unicode properties (astral) — Requires the Unicode Base addon (
A
)
All matches, or advance lastIndex after matches (global) (
g
)
Case insensitive (ignoreCase) (
i
)
^ and $ match at newlines (multiline) (
m
)
Matches must start at lastIndex (sticky) — Requires Firefox 3+ or native ES6 support (
y
)
Test
Results
Clear
Regular Expression
^[A-Za-z0-9\-\._]{1,64}$
Replacement
Options
Test
Input
XRegExp.replace()
XRegExp.split()[]
XRegExp.test()
XRegExp.exec().index
XRegExp.exec()[]
regex.lastIndex
1
00445
[0]:
[1]:
true
0
[0]: 00445
0
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