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RegEx Pal From **Dan's Tools**



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# Regex Pal
Dan's Tools

Library

{{getLabel()}}

{{getLabel()}}

{{getStaticRating()}}

* * *

* * *

* * *

# Substitution

* * *

{{getIcon()}}{{getLabel()}}{{getDetail()}}

**RegexPal 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

- JavascriptPCRE
- flags

##### Test String

##### Substitution

Expression Flags

* * *

ignore case (i)
global (g)
multiline (m)

extended (x)
extra (X)
single line (s)
unicode (u)
Ungreedy (U)
Anchored (A)
dup subpattern names(J)



#### Save this Regex

Name:  Description:
Save

#### Top Regular Expressions

Url checker with or without http:// or https://
Only letters and numbers
date format (yyyy-mm-dd)
Url Validation Regex | Regular Expression - Taha
nginx test
Extract String Between Two STRINGS
special characters check
match whole word
Match anything enclosed by square brackets.
Find Substring within a string that begins and ends with paranthesis
Simple date dd/mm/yyyy
Blocking site with unblocked games
Match if doesn't start with string
RegEx for Json
all except word
Match anything after the specified
Java Variable
10-digit phone number with hyphens
Find any word in a list of words
GREP gen

#### 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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