Trình kiểm tra Regex

Kiểm tra biểu thức chính quy với khớp thời gian thực.

Mẫu

Cờ

g(global)i(case-insensitive)m(multiline)s(dotAll)

Chuỗi kiểm tra

Regex Tester is a real-time regular expression testing tool. Enter a pattern and test string to instantly see all matches, captured groups, and match positions with highlighted results.

Features

Real-time pattern matching
Flag support (g, i, m, s)
Match highlighting with colors
Captured group display
Match count and positions

Usage Example

// Pattern: (\d{3})-(\d{4})
// Test: Call 123-4567 or 987-6543
// Matches: 123-4567, 987-6543
// Groups: [123, 4567], [987, 6543]

FAQ

What is regex?

Regular expressions (regex) are patterns used to match character combinations in strings. They are used in search, validation, and text manipulation.

What do the flags mean?

g = global (find all matches), i = case-insensitive, m = multiline (^ and $ match line boundaries), s = dotAll (. matches newlines).

Trình kiểm tra Regex

Features

Usage Example

FAQ

Công cụ Nhà phát triển