Named Capture Groups Regex Pattern

Live Regex Tester

Pattern Breakdown

Code Examples

const regex = /(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/;
const test = "2026-03-07";
console.log(regex.test(test)); // true

// Extract matches
const matches = test.match(regex);
console.log(matches);

import re

pattern = r'(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})'
test = "2026-03-07"
match = re.search(pattern, test)
print(match)  # Found!

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})`)
    fmt.Println(re.MatchString("2026-03-07")) // true
}

Common Use Cases

Match Examples

About the Named Capture Groups Regex

Demonstrates named capture groups for readable regex. Access matches by name instead of index for clearer code.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The named capture groups pattern is classified as advanced difficulty in the advanced patterns category. This pattern is specifically designed for JavaScript.

When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.

More Advanced Patterns Patterns