Regular Expressions 101

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Community Patterns

1

Valid HTML Tag Pattern

PCRE2 (PHP >=7.3)
Valid HTML Tag Pattern Which HTML tags are considered invalid: Tags ending with a different tag than what it started. Example: Hello Tags with open attributes (or closed with a different type of quote). Examples: Hello or Hello Which HTML tags are considered valid: Tags ending with the same tag...
Submitted by Ninja - a year ago (Last modified a year ago)
1

Check if string matches a valid CSS color (hex, rgb, rgba, hsl, hsla)

ECMAScript (JavaScript)
no description available
Submitted by Ioannis Potouridis - 7 years ago
1

color-price-count

PCRE (PHP <7.3)
no description available
Submitted by By me - 8 years ago
1

Hexadecimal Color Code Validation

PCRE2 (PHP >=7.3)
murdochleaks.org
Submitted by anonymous - a year ago
1

Match Hexadecimal Color with Optional Alpha

PCRE2 (PHP >=7.3)
theunjob.com
Submitted by anonymous - a year ago
1

Match Hex Color Codes

PCRE2 (PHP >=7.3)
DartWhite.com
Submitted by anonymous - a year ago
1

Regex to Match Valid Hex Color Values in CSS

Python
no description available
Submitted by Prayash Mohapatra - 9 years ago
1

CSS3 color expressions

PCRE (PHP <7.3)
Up to spec as of 2016-03-16. You can choose whether to enforce industry-standard casing for keywords via the "i" flag, which is enabled by default. Note that both "currentcolor" and "currentColor" are common; the relevant spec uses "currentColor", but several browsers prefer "currentcolor".
Submitted by Paul Buonopane @ NamePros - 9 years ago
1

RGBA [0;255]

PCRE (PHP <7.3)
Color RGBA in shape : 255, 255, 255, 255 ',' or ';' are accepted
Submitted by theBlueBisu - 10 years ago
1

Match Valid HTML5 Color Names

PCRE2 (PHP >=7.3)
RascalJournal.com
Submitted by anonymous - a year ago
1

RGBA color values and opacity matcher

ECMAScript (JavaScript)
Regex to match R-G-B and Opacity with/without "," and even RGBA text It will match rgba(x,x,x,x.x) rgba (x x X x.x) x,x,x,x.x x x x x.x...
Submitted by Maulik Soni - 10 years ago
1

RGB colors

PCRE (PHP <7.3)
Matches all the RGB colors in the format #RRGGBB and #RGB
Submitted by Gabriel Hautclocq - 10 years ago
1

Hex Color Validator

Python
Verifies whether each input line contains a valid three- or six-digit hexadecimal number, commonly used as color codes in CSS and other technologies. Each number must begin with the "#" sign. I've seen other regexes for this which use individual expressions for a three-digit number and a six-digit...
Submitted by Mr. Lance E Sloan - 2 months ago
0

Facebook Page/Profile. No profile.php. No /groups/

PCRE (PHP <7.3)
Example: http://www.facebook.com/profile.php?id=123456789 http://www.facebook.com/someusername https://www.facebook.com/0x20.be http://www.facebook.com/plugins/likebox.php?href=http%3A%2F%2Fwww.facebook.com%2Fpages%2F2leep%2F109473355777935&amp;width=300&amp;connections=4&amp;stream=false&amp;heade...
Submitted by aramosf - 10 years ago
0

search h1 tag html

PCRE (PHP <7.3)
(.*?) example: Your best title
Submitted by otharwa - 11 years ago
0

Find color

PCRE (PHP <7.3)
no description available
Submitted by anonymous - 11 years ago
-1

Street, City, State|State Code, Zip

PCRE (PHP <7.3)
Matches the following format of US address: Street, City, State|State Code, Zip Example: 765757 North Nevada Avenue, Colorado Springs, CO, 80918
Submitted by Chandan Kumar Sinha - 10 years ago
-1

Matching un-wrapped HTML & CSS code blocks in Markdown

ECMAScript (JavaScript)
PATTERNS RegEx Flavour ECMAScript (JavaScript, ActionScript, TypeScript, etc.) ...
Submitted by anonymous - 2 years ago
0

Find element with specific attribute (supports multiline element)

ECMAScript (JavaScript)
This will help you find all the v-btn component usage with prop color set to primary.
Submitted by anonymous - 3 years ago
0

Hexadecimal Color

PCRE (PHP <7.3)
My First Regex
Submitted by anonymous - 8 years ago
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