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
// Import the 'crypto' module from Node.js for cryptographic functionality
const crypto = require('crypto');
// Define a function 'UUIDGeneratorNode' to generate a UUID (Universally Unique Identifier) in a Node.js environment
const UUIDGeneratorNode = () =>
// Generate a UUID using a random number generator provided by the 'crypto' module
([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
// For each character 'c' in the UUID template, replace it with a randomly generated hexadecimal digit
(c ^ (crypto.randomBytes(1)[0] & (15 >> (c / 4)))).toString(16)
);
// Generate and log a UUID using the 'UUIDGeneratorNode' function
console.log(UUIDGeneratorNode());
Flowchart:
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