Semantic Version Regex Pattern

Live Regex Tester

Pattern Breakdown

Code Examples

const regex = /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(-[a-zA-Z0-9.]+)?(\+[a-zA-Z0-9.]+)?$/;
const test = "2.1.0-beta.1";
console.log(regex.test(test)); // true

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

import re

pattern = r'^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(-[a-zA-Z0-9.]+)?(\+[a-zA-Z0-9.]+)?$'
test = "2.1.0-beta.1"
match = re.search(pattern, test)
print(match)  # Found!

package main

import (
    "fmt"
    "regexp"
)

func main() {
    re := regexp.MustCompile(`^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(-[a-zA-Z0-9.]+)?(\+[a-zA-Z0-9.]+)?$`)
    fmt.Println(re.MatchString("2.1.0-beta.1")) // true
}

Common Use Cases

Match Examples

About the Semantic Version Regex

Validates semantic version strings (SemVer) with major.minor.patch and optional pre-release and build metadata.

Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The semantic version pattern is classified as intermediate difficulty in the code & programming category. It works in all major programming languages.

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 Code & Programming Patterns