how does middleware dow code example

Example 1: middleware

//just for me lol... pls don't delete
"middleware" - code that runs before the final route call back.
They are in the middle of the beginning of the route and the 
callback function.

Example 2: middleware

app.use("/", (req, res, next) => {
  console.log("I am a middleaware")
  next()
})