30-seconds-of-code/snippets/js/s/uuid-generator-browser.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Generate UUID (browser)	snippet	javascript	browser random	mountain-lake-cottage	2020-10-22T20:24:44+03:00

Generates a UUID in a browser.

• Use Crypto.getRandomValues() to generate a UUID, compliant with RFC4122 version 4.
• Use Number.prototype.toString() to convert it to a proper UUID (hexadecimal string).

const UUIDGeneratorBrowser = () =>
  ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
    (
      c ^
      (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))
    ).toString(16)
  );

UUIDGeneratorBrowser(); // '7982fcfe-5721-4632-bede-6000885be57d'