Regex Cheat Sheet
Comprehensive regex reference with categorized syntax list and search/filter functionality.
| Syntax | Description | Example | Match Result | Try |
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How to Use the Regex Cheat Sheet
Browse the categorized reference to find the regex syntax you need. Each entry includes the pattern, description, and examples. Use this as a quick reference while writing regular expressions. Categories include character classes, quantifiers, anchors, groups, lookahead/lookbehind, and common patterns.
About Regular Expression Syntax
Regular expression syntax provides a compact way to describe text patterns. While the core syntax is similar across languages, some features may vary. This cheat sheet covers the most commonly used patterns that work in JavaScript, Python, Java, and most other languages. Understanding these patterns is essential for effective text processing and data validation.
Frequently Asked Questions (FAQ)
Q. Is this cheat sheet specific to one programming language?
A. The patterns shown are based on standard regex syntax that works across most programming languages including JavaScript, Python, Java, and C#. Language-specific features are noted where applicable.
Q. Can I test patterns from this cheat sheet?
A. Yes, use our Regex Tester tool to try out any pattern from this reference with your own test data.
Q. Is the content available offline?
A. Since all content is rendered in your browser, you can save the page for offline reference.