Regular Expressions 101

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Community Patterns

Search among 17,940 community submitted regex patterns...

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Regular Expression
ECMAScript (JavaScript)

^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$

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Description

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Submitted by alexsio nau - 3 months ago

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Community Patterns

Instagram hashtag regex

Matching Alphanumeric Strings with Underscores and Dashes

Matching Variable Names (e.g., JavaScript, Python)

Matching Time in 12-Hour Format

Matching Dates in MM-DD-YYYY Format

Matching URL Parameters

Matching Strings with No Special Characters

Matching Dates with Day of Week (e.g., Monday, August 14, 2024)

Match Valid Ethereum Address

Match Valid Bitcoin Address

Match Safe Filename

Match URL Path with Optional Query Params

Validate Credit Card Expiration Date

Match Email with Domain Validation

Extract Phone Number with Extension

Email with Optional Subdomain

Non-Greedy Match

Currency Amount

XML Attribute

Match Credit Card Number with Optional Spaces

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Regular ExpressionECMAScript (JavaScript)

Description

Regular Expression
ECMAScript (JavaScript)