how to read html content coming from frontend in node js code example

Example: read html file node js

const http = require("http");
//use fs module at first to read file 
const fs = require("fs");

const hostname = "127.0.0.1";
const port = 3000;
// simple code to read file using fs module
const files = fs.readFileSync("new.html");

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  // give correct input for html
  res.setHeader("Content-Type", "text/html");
  res.end(files);
});

server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
  console.log("Done")
});
//simple code to make server and read file