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Community Patterns

1

ตรวจสอบพยัญชนะต้นตัวสะกดสระและวรรณยุกต์ไทย

Created·2026-01-22 01:36
Updated·2026-01-23 12:42
Flavor·ECMAScript (JavaScript)
ตรวจสอบพยัญชนะต้น (ต้องมี) ตรวจตัวสะกดสำหรับสระที่ต้องมี ตรวจสอบการวางสระและวรรณยุกต์ไทย หมายเหตุ การตรวจสอบตัวสะกดในภาษาไทยตรวจสอบได้ยากเพราะภาษาไทยเป็นภาษาที่เขียนติด ๆ กันไม่มีการแบ่งคำอย่างชัดเจนทำให้การอ่านภาษาไทยผู้อ่านต้องใช้ความหมายของคำในการตัดสินการอ่านแบ่งคำตามความเหมาะสมเช่นคำว่า "ตากลม" อาจอ่านเป็น "ตาก-ลม" ก็ได้ หรืออ่านเป็น "ตา-กลม"ก็ได้ ดังนั้นการเขียน Regex เพื่อทำการตรวจสอบอาจช่วยได้ระดับหนึ่ง อ่าจมีผิดบ้างถูกบ้าง แต่ก็ถือว่าเป็นเครื่องมือที่ใช้ช่วยเหลือในการตรวจสอบเพิ่มเติมได้ 80% ของความเป็นไปใด้ก็แล้วกันนะครับ หวังว่าการเขียนเพิ่มเติมส่วนนี้ จะมีประโยชน์บ้างไม่มากก็น้อย
Submitted by อธิปัตย์ ล้อวงศ์งาม
2

Secure Email Validation (OWASP-Aligned & DNS-Strict) (RFC 5322)

Created·2026-01-21 16:32
Updated·2026-01-21 16:36
Flavor·ECMAScript (JavaScript)
This regular expression provides a balance between RFC compliance and security-best-practices. It is designed to prevent injection vectors in legacy systems by using a restricted "safe" character subset recommended by the OWASP Validation Regex Repository. Pattern: ^A-Za-z0-9(?:\.A-Za-z0-9_+&-]+)*@(?:[A-Za-z0-9{0,61}[A-Za-z0-9])?\.)+[A-Za-z]{2,63}$ Key Features: Forced Alphanumeric Start: Prevents leading hyphens to avoid command injection vulnerabilities. Security Subset: Restricts special characters to _+&*- to prevent exotic character injections (e.g., pipes or backticks). No Quoted Strings: Forbids quoted strings to eliminate dangerous payloads containing spaces or backslashes. DNS Compliance: Enforces label lengths (1–63 characters) and prevents labels from starting or ending with hyphens. Whole String Anchoring: Uses ^ and $ to ensure the entire input is validated.
Submitted by Gor Sargsyan
1

URL, URI format validation

Created·2026-01-16 16:16
Updated·2026-01-16 23:25
Flavor·ECMAScript (JavaScript)
URL, URI format validation
Submitted by Atipat Lorwongam
2

Regex Email Format

Created·2026-01-15 17:39
Updated·2026-01-16 23:26
Flavor·ECMAScript (JavaScript)
Used to check Email Format
Submitted by Atipat Lorwongam
1

ตรวจสอบวรรณยุกต์และสระในภาษาไทย (รองรับการลากเสียงอาาาา)

Created·2026-01-15 17:20
Updated·2026-01-23 07:30
Flavor·ECMAScript (JavaScript)
ตรวจสอบการใช้วรรณยุกต์และสระในภาษาไทย รองรับการใช้สระอาาาาาติดกันแบบลากเสียง ไม่ตรวจสอบพยัญชนะต้นและตัวสะกด
Submitted by อธิปัตย์ ล้อวงศ์งาม
1

ตรวจสอบวรรณยุกต์และสระในภาษาไทย

Created·2026-01-15 17:19
Updated·2026-01-23 07:29
Flavor·ECMAScript (JavaScript)
ใช้ตรวจสอบวรรณยุกต์และสระในภาษาไทย ไม่ตรวจสอบพยัญชนะต้นและตัวสะกด
Submitted by อธิปัตย์ ล้อวงศ์งาม
1

Simple CSS Selector parser

Created·2025-12-31 14:18
Updated·2025-12-31 14:22
Flavor·ECMAScript (JavaScript)
Basic Regex for CSS Selector. Pseudo-Elements, Combinators and other advanced stuff are not supported.
Submitted by anonymous
1

Text in between HTML tags and inside quotation marks within HTML tags

Created·2025-12-08 04:32
Flavor·ECMAScript (JavaScript)
Overview This Regular Expression shows any text between HTML tags or between quotation marks within the tags themselves. An example would be: <HTML lang="en", then selecting the 'en' from there. Group 1 is between tags, and group 2 is in the quotes. I recommend only using half of this regular expression, like the 'between tags' part, or the 'inside quotes part'. Explanation The whole regex is built of two alternates, the tags and quotes part. The tags part (the first part) starts with a lookbehind of a closing of a tag, then a lazy part that selects almost characters, and a lookahead that checks for the beginning of tag (so the text is between tags). The quotes part is built in a similar structure, where it looks behind for an open of a tag, .+ , then checking for an equals sign followed by a quotation mark. The middle section of the quotes part is again just searching for text, but also not including quotation marks. The lookahead checks for a closing quotation mark and that's it! Please comment any questions or email me.
Submitted by daniel@sabian.pro
1

Universal HTML <input type="email"... requirement pattern

Created·2025-10-31 01:19
Flavor·ECMAScript (JavaScript)
This regex is a universal pattern used for the HTML input tag with type="email". Dont use type="email" as the pattern does not work with it. For the pattern to work correctly, use type="text" with inputmode="email" if you want to display the desired keyboard on mobile screens.
Submitted by kiko
1

IPv4 no leading zeros

Created·2025-10-28 09:57
Flavor·ECMAScript (JavaScript)
An IPv4 expression that doesn't allow leading zeros in octets. 10.0.0.1 will pass 10.0.0.01 shouldn't pass
Submitted by machfist
1

Only one special character("-") per word

Created·2025-09-20 18:27
Flavor·ECMAScript (JavaScript)
Only one special character ("-") is allowed when entering a word
Submitted by anonymous
1

Email validation regex

Created·2025-09-05 11:27
Flavor·ECMAScript (JavaScript)
Compliant with RFC 5322
Submitted by valentinllpz
1

Integer Number

Created·2025-08-17 13:59
Updated·2025-08-17 14:06
Flavor·ECMAScript (JavaScript)
X
Submitted by Buddha
1

op

Created·2025-07-29 00:21
Flavor·ECMAScript (JavaScript)
les
Submitted by anonymous
1

Detect age-related conversations.

Created·2025-07-21 08:50
Updated·2025-07-21 16:09
Flavor·ECMAScript (JavaScript)
Safety-measure protocol for online communities.
Submitted by mable42
1

regex for '' deletion

Created·2025-07-16 16:44
Updated·2025-07-16 16:44
Flavor·ECMAScript (JavaScript)
regex for '' deletion
Submitted by Egor K
1

Youtube URL / ID

Created·2025-05-24 02:20
Updated·2025-06-10 05:24
Flavor·ECMAScript (JavaScript)
Youtube match all URL / ID Note: Not work with rust lang if u want to use it in rust remove all the ' \ '. Regex link to watch update in the future and get data URL: https://regex101.com/r/lH4He5/
Submitted by ccauvang
1

Regex to match URLs in a string

Created·2025-05-15 02:38
Flavor·ECMAScript (JavaScript)
Regex to match URLs in a string with http and https protocol and optional paths in URL
Submitted by Kaustubh
1

https://google.com

Created·2025-04-27 00:18
Flavor·ECMAScript (JavaScript)
PropTypes.string# ``
Submitted by Khaliq88
2

BCP 47, RFC 5646, Tags for Identifying Languages

Created·2025-04-07 17:39
Flavor·ECMAScript (JavaScript)
BCP 47, RFC 5646, Tags for Identifying Languages Phillips, A., Ed., and M. Davis, Ed., "Tags for Identifying Languages", BCP 47, RFC 5646, DOI 10.17487/RFC5646, September 2009, .
Submitted by anonymous

Community Library Entry

1

Regular Expression
Created·2015-05-26 13:35
Flavor·PCRE (Legacy)

/
^\+[\d]{1}+\([\d]{3}\)+[\d]{3}+\-+[\d]{4}$|^\+[\d]{1}+\([\d]{3}\)+[\d]{3}+\s+[\d]{4}$|^\+[0-9]{1}+\([0-9]{3}\)+[0-9]{7}$|^\+[0-9]{1}+\([0-9]{3}\)+[0-9]{3}+\-+[0-9]{2}+\-+[0-9]{2}$|^\+[0-9]{1}+\([0-9]{3}\)+[0-9]{3}+\s+[0-9]{2}+\s+[0-9]{2}$|^\+[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\s+[0-9]{2}+\s+[0-9]{2}$|^\+[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\-+[0-9]{2}+\-+[0-9]{2}$|^\++[0-9]{4}+\s+[0-9]{7}$|^\+[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\s+[0-9]{4}$|^\+[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\-+[0-9]{4}$|^\++[0-9]{11}$|^[0-9]{1}+\([0-9]{3}\)+[0-9]{7}$|^[0-9]{1}+\([0-9]{3}\)+[0-9]{3}+\-+[0-9]{2}+\-+[0-9]{2}$|^[0-9]{1}+\([0-9]{3}\)+[0-9]{3}+\s[0-9]{2}+\s+[0-9]{2}$|^\([0-9]{3}\)+[0-9]{7}$|^\([0-9]{3}\)+[0-9]{3}+\-+[0-9]{2}+\-+[0-9]{2}$|^\([0-9]{3}\)+[0-9]{3}+\s+[0-9]{2}+\s+[0-9]{2}$|^[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\s+[0-9]{2}+\s+[0-9]{2}$|^[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\-+[0-9]{2}+\-+[0-9]{2}$|^[0-9]{4}+\s+[0-9]{7}$|^[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\s+[0-9]{4}$|^[0-9]{1}+\s+[0-9]{3}+\s+[0-9]{3}+\-+[0-9]{4}$|^[\d]{11}$|^[\d]{10}$|^\+[\d]{1}+\([\d]{3}\)+[\d]{2}+\s+[\d]{3}+\-+[\d]{2}$|^\+[\d]{1}+\([\d]{3}\)+[\d]{2}+\s+[\d]{3}+\s+[\d]{2}$|^\+[\d]{1}+\([\d]{3}\)+[\d]{2}+\s+[\d]{5}$|^\+[\d]{6}+\s+[\d]{3}+\-+[\d]{2}$|^\+[\d]{6}+\s+[\d]{3}+\s+[\d]{2}$|^\+[\d]{6}+\s+[\d]{5}$|^\+[\d]{4}+\s+[\d]{2}+\s+[\d]{3}+\s+[\d]{2}$|^\+[\d]{4}+\s+[\d]{2}+\s+[\d]{3}+\-+[\d]{2}$|^\+[\d]{11}$|^[\d]+\([\d]{3}\)+[\d]{2}+\s+[\d]{3}+\-+[\d]{2}$|^[\d]+\([\d]{3}\)+[\d]{2}+\s+[\d]{3}+\s+[\d]{2}$|^[\d]+\([\d]{3}\)+[\d]{2}+\s+[\d]{5}$|^[\d]{6}+\s+[\d]{3}+\-+[\d]{2}$|^[\d]{6}+\s+[\d]{3}+\s+[\d]{2}$|^[\d]{6}+\s+[\d]{5}$|^[\d]{4}+\s+[\d]{2}+\s+[\d]{3}+\s+[\d]{2}$|^[\d]{4}+\s+[\d]{2}+\s+[\d]{3}+\-+[\d]{2}$|^[\d]{3}+\-+[\d]{2}$|^[\d]{5}$
/
i
Open regex in editor

Description

Supported formats (mobile): +7(xxx)xxx xxxx +7(xxx)xxxxxxx +7(xxx)xxx-xx-xx +7(xxx)xxx xx xx +7 xxx xxx xx xx +7 xxx xxx-xx-xx +7xxx xxxxxxx +7 xxx xxx xxxx +7 xxx xxx-xxxx +7xxxxxxxxxx 7(xxx)xxxxxxx 7(xxx)xxx-xx-xx 7(xxx)xxx xx xx (xxx)xxxxxxx (xxx)xxx-xx-xx (xxx)xxx xx xx 7 xxx xxx xx xx 7 xxx xxx-xx-xx 7xxx xxxxxxx 7 xxx xxx xxxx 7 xxx xxx-xxxx 7xxxxxxxxxx xxxxxxxxxx

Home phones: ex.: +7(813)78 444-xx +7(xxx)xx xxx-xx +7(xxx)xx xxx xx +7(xxx)xx xxxxx +7xxxxx xxx-xx +7xxxxx xxx xx +7xxxxx xxxxx +7xxx xx xxx xx +7xxx xx xxx-xx +7xxxxxxxxxx 7(xxx)xx xxx-xx 7(xxx)xx xxx xx 7(xxx)xx xxxxx 7xxxxx xxx-xx 7xxxxx xxx xx 7xxxxx xxxxx 7xxx xx xxx xx 7xxx xx xxx-xx 7xxxxxxxxxx xxx-xx xxxxx

Submitted by Redfern.89