Common Regex Patterns
A reference collection of frequently used regex patterns for validation and parsing tasks.
JavaScript
Intermediate
4 min read
Common Regex Patterns
Example
// Email (simple, practical)
/^[^\s@]+@[^\s@]+\.[^\s@]+$/
// URL
/^https?:\/\/[\w\-]+(\.[\w\-]+)+([\w\-._~:/?#[\]@!$&'()*+,;=]*)?$/
// Phone (US)
/^\(?(\d{3})\)?[-.\s]?(\d{3})[-.\s]?(\d{4})$/
// Strong password (8+ chars, upper, lower, digit, special)
/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&]).{8,}$/
// Hex color
/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$/
// IPv4
/^(\d{1,3}\.){3}\d{1,3}$/ Pro Tip
Never use regex alone for email validation — send a confirmation email to verify the address actually exists.
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