const regex = /^(?:ISBN(?:-10)?:? )?(?:(?<number>\d{9})|(?=[\dX -]{13}$)(?<registrationGroup>\d{1,5})[ -](?<registrant>\d{1,7})[ -](?<publication>\d{1,6})[ -])(?<checkDigit>[\dX])$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(?:ISBN(?:-10)?:? )?(?:(?<number>\\d{9})|(?=[\\dX -]{13}$)(?<registrationGroup>\\d{1,5})[ -](?<registrant>\\d{1,7})[ -](?<publication>\\d{1,6})[ -])(?<checkDigit>[\\dX])$', 'gm')
const str = `359821508X
3598215083X
35982150X
3-598-21508-8
3-598-215087-8
3-598-2150-8
3598-2150-8
359821-5-0-8`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions