Regex Playground

Interactive regular expression learning and testing tool.

Usage

regex "pattern" "test string"

Features

• 🎯 Real-time matching
• 📖 Plain English explanation
• 🔍 Match groups extraction
• 📋 Common patterns library
• 🧪 Test cases generator

Example

Input: regex "(\w+)@(\w+)\.(\w+)" "test@example.com"

Output:
✓ Match: test@example.com
Group 1: test
Group 2: example  
Group 3: com

Explanation:
- (\w+) - capture word characters (test)
- @ - literal @
- (\w+) - capture word characters (example)
- \. - literal dot
- (\w+) - capture word characters (com)

Common Patterns

Commands

• regex explain - Explain pattern in plain English
• regex test - Test pattern against string
• regex library - Show common patterns
• regex generate - Generate test cases (email, url, phone, etc.)

Use Cases

• Debug regex in code
• Learn regex by seeing matches
• Validate input patterns
• Extract data from strings