Validationflags: g

ISBN-10

Match 10-digit ISBNs, allowing optional hyphens or spaces between groups.

Available in

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("\\b(?:\\d[\\- ]?){9}[\\dXx]\\b", "g");
const input = "0-306-40615-2";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

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

Python (re) code

pyPython

import re

pattern = re.compile(r"\b(?:\d[\- ]?){9}[\dXx]\b")
input_text = "0-306-40615-2"
for m in pattern.finditer(input_text):
    print(m.group(0))

Stdlib `re` module — no third-party dependency. Works on Python 3.6+.

Go (RE2) code

goGo

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`\b(?:\d[\- ]?){9}[\dXx]\b`)
	input := `0-306-40615-2`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}

Uses `regexp.MustCompile` (panics on bad patterns at startup) and `FindAllString` for all matches.