In this guide
A simple overview of JWT Authentication in Node.js — Complete Secure Implementation. Learn what it means, when it helps, and what to check first.
Why HttpOnly Cookies?
Storing JWTs in localStorage exposes your app to XSS attacks. Storing them in HttpOnly cookies prevents client-side JavaScript from accessing the token, making your app significantly more secure.
Signing the Token
const jwt = require('jsonwebtoken');
const generateToken = (res, userId) => {
const token = jwt.sign({ id: userId }, process.env.JWT_SECRET, {
expiresIn: '30d',
});
// Set JWT as HTTP-Only cookie
res.cookie('jwt', token, {
httpOnly: true,
secure: process.env.NODE_ENV !== 'development', // Use secure cookies in prod
sameSite: 'strict',
maxAge: 30 * 24 * 60 * 60 * 1000, // 30 Days
});
};Relevant Scaleup Infotech Services
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