“Mern” Respostas de código

Mern

/**
 * This is hoe you create a server
 */

const dotenv = require("dotenv");
const express = require("express");
const { default: mongoose } = require("mongoose");
const app = express();
const PORT = process.env.PORT


dotenv.config({ path: './config.env'});

// Database connection
const DB = process.env.DATABASE

/**
 * Connect method will connect server to the database
 */

mongoose
  .connect(DB)
  .then(() => {
    console.log("Connection successful");
  })
  .catch((err) => {
    console.log(err);
  });

// Middleware ---
const middleWare = (req, res, next) => {
  console.log("Helllo middleware");
  next();
};

/**
 * Route to get the data
 */

app.get("/", middleWare, (req, res) => {
  // It will be displayed in browser
  // res.send is for sending the data
  res.send("Hello from the server");
});

app.get("/about", middleWare, (req, res) => {
  res.send("Hello from About");
});

/**
 * listen method will start server
 */
app.listen(PORT, () => {
  console.log(`server isrunning on ${PORT}`);
});