HTTP & Express Basics

What does req.params contain in Express?

app.get("/users/:id", (req, res) => {
  console.log(req.params)
})
// GET /users/42

What is the difference between req.params and req.query?

// GET /search/users?name=rahul&age=25

This Express route has a bug:

app.get("/user", (req, res) => {
  const user = getUser()
  res.json(user)
  res.send("done")
})