Node.js
Node.js Authentication BasicsNode.js Authentication Basics
Node.js authentication ensures only approved users access data.
Read Time
5 min readDifficulty
BeginnerLast Updated
Jun 15, 2026Version
v1.0.0Introduction
Websites need to know exactly who is requesting data to keep accounts secure. Node.js typically uses JSON Web Tokens (JWT) to lock down routes. When a user logs in, they get a secure token that they must show every time they request private data.
Example
Example
Key Points
- Authentication verifies user identity.
- Authorization checks what data the user is allowed to see.
- JWTs securely pass information between client and server.
- Tokens eventually expire for security reasons.