middleware

1 free lesson tagged middleware across Programming. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.

Programming

intermediate

Building REST APIs with Express

Build a small REST API on Node 22 with Express: routes, middleware, JSON body parsing, Zod input validation, status codes, and a clean async error pipeline you won't outgrow.

10 steps·~15 min

Building REST APIs with Express

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