Regex Cheatsheet - Regular Expression Quick Reference
Quick reference for regular expression patterns. Character classes, quantifiers, anchors, and common patterns.
Password Strength Pattern
Common PatternMatch password: 8+ chars with uppercase, lowercase, digit, special
Pattern
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$Syntax
Explanation
Uses multiple lookaheads to ensure each character type appears at least once.
Examples
Pass@1234Valid strong password
Matches: Pass@1234
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