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Regex Tester is a tool to learn, build, & test Regular Expressions (RegEx / RegExp).
- Results update in real-time as you type.
- Roll over a match or expression for details.
- Save & share expressions with others.
- Explore the Library for help & examples.
- Undo & Redo with {{getCtrlKey()}}-Z / Y.
- Search for & rate Community patterns.
Character classes | |
---|---|
. | any character except newline |
\w \d \s | word, digit, whitespace |
\W \D \S | not word, digit, whitespace |
[abc] | any of a, b, or c |
[^abc] | not a, b, or c |
[a-g] | character between a & g |
Anchors | |
^abc$ | start / end of the string |
\b | word boundary |
Escaped characters | |
\. \* \\ | escaped special characters |
\t \n \r | tab, linefeed, carriage return |
\u00A9 | unicode escaped © |
Groups & Lookaround | |
(abc) | capture group |
\1 | backreference to group #1 |
(?:abc) | non-capturing group |
(?=abc) | positive lookahead |
(?!abc) | negative lookahead |
Quantifiers & Alternation | |
a* a+ a? | 0 or more, 1 or more, 0 or 1 |
a{5} a{2,} | exactly five, two or more |
a{1,3} | between one & three |
a+? a{2,}? | match as few as possible |
ab|cd | match ab or cd |
Regular Expression
- flags
Test String
Substitution
Namespace Prefix
salesforce namespace prefix for skuidComments
Top Regular Expressions
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Merry Christmas
validate our paths
Match IDs
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mau
rtfValidation
Validate datetime
Match a bitcoin address
Checks the length of number and not starts with 0
date substitution
Match an email address
RegEx Allowing Number Only
Url
Match or Validate phone number
Match a valid hostname
match a wide range of international phone number
Match integers
Merry Christmas
Cheat Sheet
Character classes | |
---|---|
. | any character except newline |
\w \d \s | word, digit, whitespace |
\W \D \S | not word, digit, whitespace |
[abc] | any of a, b, or c |
[^abc] | not a, b, or c |
[a-g] | character between a & g |
Anchors | |
^abc$ | start / end of the string |
\b | word boundary |
Escaped characters | |
\. \* \\ | escaped special characters |
\t \n \r | tab, linefeed, carriage return |
\u00A9 | unicode escaped © |
Groups & Lookaround | |
(abc) | capture group |
\1 | backreference to group #1 |
(?:abc) | non-capturing group |
(?=abc) | positive lookahead |
(?!abc) | negative lookahead |
Quantifiers & Alternation | |
a* a+ a? | 0 or more, 1 or more, 0 or 1 |
a{5} a{2,} | exactly five, two or more |
a{1,3} | between one & three |
a+? a{2,}? | match as few as possible |
ab|cd | match ab or cd |
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