Request & Response Objects

Summary

Express's `req` and `res` objects — carrying everything about the incoming request and providing the methods to shape your response (status, headers, body).

• 1Log `req.params`, `req.query` and `req.body` for a single request to see the difference.
• 2Practice `res.status().json()` for consistent JSON API responses.
• 3Learn `res.redirect()`, `res.sendFile()` and other response helpers beyond JSON.