Can a route have multiple handlers in Express?
Yes. Each handler calls next() to pass control to the next one. This lets you compose middlewares per route: authenticate, loadPost, then the handler. Very useful for protected routes.
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More FAQs in Express Routing Basics: Methods and Paths
You map HTTP methods and URL paths to handlers with app.get, app.post, etc. Use :name for URL params (req.params), ?key=value for query strings (req.query), and express.Router to group routes by feature.
GET for reading (safe, idempotent), POST for creating, PUT for full replace, PATCH for partial update, DELETE for removing. Pick by semantics, not by habit.
Define a route with :name: /users/:id. Read it with req.params.id. Params are always strings. Convert to ObjectId or number when needed.
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