JavaScript: Generate a UUID in Node.JS.

JavaScript fundamental (ES6 Syntax): Exercise-254 with Solution

Write a JavaScript program to generate a UUID in Node.JS. Use crypto API to generate a UUID, compliant with RFC4122 version 4.

• Use crypto.randomBytes() to generate a UUID, compliant with RFC4122 version 4.
• Use Number.prototype.toString(16) to convert it to a proper UUID.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const crypto = require('crypto');
const UUIDGeneratorNode = () =>
  ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
    (c ^ (crypto.randomBytes(1)[0] & (15 >> (c / 4)))).toString(16)
  );
console.log(UUIDGeneratorNode());

Flowchart:

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