JavaScript / ECMAScript

Semantic Version (SemVer) in JS

Match semantic version strings like 1.2.3, 1.2.3-beta.1, or 1.2.3+build.42.

Try it in the JS tester →

Pattern

regexJS
(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)(?:-[\w.]+)?(?:\+[\w.]+)?   (flags: g)

JavaScript / ECMAScript code

jsJavaScript
const re = new RegExp("(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)(?:-[\\w.]+)?(?:\\+[\\w.]+)?", "g");
const input = "1.0.0";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

How the pattern works

Three numeric components (no leading zeros) separated by dots. Optional pre-release label after - and optional build metadata after + per the SemVer 2.0.0 spec.

Examples

Input

1.0.0

Matches

  • 1.0.0

Input

2.3.1-beta.1

Matches

  • 2.3.1-beta.1

Input

1.0.0+build.42

Matches

  • 1.0.0+build.42

Same pattern, other engines

Python (re)

Supported

See how this pattern looks (and behaves) in Python's stdlib `re` module.

Go (RE2)

Supported

See how this pattern looks (and behaves) in Go's `regexp` package (RE2 engine).

← Back to Semantic Version (SemVer) overview (all engines)