Password Generator for JavaScript
Free online password generator with JavaScript code examples
Working with password generator in JavaScript? Our free online password generator helps JavaScript developers format, validate, and process data instantly. Below you will find JavaScript code examples using crypto (Node.js built-in) so you can achieve the same result programmatically in your own projects.
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Open Password GeneratorJavaScript Code Example
const crypto = require('crypto');
function generatePassword(length = 16) {
const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()_+-=';
const randomBytes = crypto.randomBytes(length);
let password = '';
for (let i = 0; i < length; i++) {
password += chars[randomBytes[i] % chars.length];
}
return password;
}
console.log(generatePassword(20));
// Or use crypto.randomUUID() for unique tokens
console.log(crypto.randomBytes(16).toString('hex'));Quick Setup
Library: crypto (Node.js built-in)
// Built-in — no installation neededJavaScript Tips & Best Practices
- Use crypto.randomBytes for cryptographically secure randomness
- Never use Math.random() for password generation
- In browsers, use crypto.getRandomValues()