node js authentication and authorization code example

Example 1: nodejs authentication token

Setting up our development environment and initializing our express server.
Creating our first basic route and controller.
Fleshing out our routes and controllers to add users and login users.
Creating a route and controller that will handle getting all users.

Example 2: token authentication in nodejs

If the request contains the access token, then the server will verify whether it was issued by the server itself using the stored secret. In case the token is expired or recognized as a one not signed by the server, the jsonwebtoken’s verify method will throw an error. We can handle the error to return a 401 error back to the client.